Detachable water-cooling resistor

Abstract

The utility model relates to the technical field of resistors, in particular to a detachable water-cooling resistor which comprises a cubic box body and a plurality of resistance tubes, a water-cooling cavity is formed in the box body, and a water inlet and a water outlet which are communicated with the water-cooling cavity are formed in the side wall of the box body; two opposite side plates of the box body are respectively provided with a plurality of mounting holes, the outer side of each mounting hole is fixedly provided with an annular lock seat, and a plurality of resistance tubes penetrate through the lock seats of the two opposite side plates of the box body in a clearance fit manner, so that the resistance tubes are erected in the water cooling cavity, and the two end parts of the resistance tubes penetrate out of the box body; each lock seat is in threaded fit with a lock cover, the resistance tube penetrates through the lock cover, a first sealing ring is arranged between the lock cover and the lock seat, and the lock cover is tightened to extrude the first sealing ring to be in interference fit with the outer wall of the resistance tube, so that the resistance tube is hermetically locked. Compared with the prior art, in the using process, if part of the resistance tubes are abnormally damaged, the resistance tubes can be checked, the corresponding resistance tubes are disassembled and replaced, the whole module resistors do not need to be replaced, and the maintenance cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of resistor, specifically relates to a detachable water -cooled resistance. BACKGROUND

[0002] When the power generated by the steam turbine generator set is not connected to the grid or the impact on the grid is small when starting, an energy consumption device needs to be configured to balance the power generated by the steam turbine generator set to ensure stable operation of the power system. The existing energy consumption devices that can meet the requirements include water resistance, air-cooled or water-cooled resistance, etc. Considering the power supply characteristics, use environment, equipment space, supporting facilities, noise, maintenance, economy and other aspects, the water-cooled dry resistance and the direct current automatic load cabinet are set to dissipate the power of the steam turbine generator set, which has good advantages.

[0003] The resistance box is a combination of several fixed-value precision resistors, which are installed in the same box and change their resistance values through a conversion device. The resistance box is still relatively accurate in terms of accuracy when used for a short period of time. However, once used for a long time, the resistance will heat up. In order to prevent dust, the resistance box is mostly sealed, and its heat dissipation effect is poor, which will cause the resistance to continue heating and cause the resistance value to be inaccurate.

[0004] Later, a water-cooled resistance box with high heat dissipation function disclosed in Chinese patent document with announcement number CN213988451U appeared, which includes a resistance box body, an adjusting knob is rotatably installed at the upper end of the resistance box body, a mark plaque is fixedly installed at the front end of the adjusting knob and located at the upper end of the resistance box body, a first terminal post is fixedly installed at the left side of the rear side of the upper end of the resistance box body, a second terminal post is fixedly installed at the right side of the rear side of the upper end of the resistance box body, the first terminal post and the second terminal post are symmetrically distributed on the rear side of the upper end of the resistance box body, a water storage tank is fixedly installed at the right end of the resistance box body, and a water inlet is fixedly installed at the upper end of the water storage tank. The water-cooled resistance box with high heat dissipation function adopts a water-cooled mode to cool the resistance elements inside the resistance box, avoiding the heating of the resistance after long-time power-on, causing the resistance value to rise and be inaccurate, and thus greatly improving the accuracy of the resistance box.

[0005] The resistance elements of the above resistance box are integrally fixed in the box body, and when a local resistance fails, the whole needs to be replaced. In addition, the existing technology also adopts a cylindrical flange type, which has low power density and cannot achieve the power size of a square module under the same volume. The metal tube resistance is mostly fixed and sealed by welding, which cannot be disassembled, and if one of the resistances is damaged, the entire resistance unit needs to be replaced, which has low maintainability and high cost. SUMMARY

[0006] In view of all or part of the above technical problems existing in the prior art, the utility model provides a detachable water-cooled resistance.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] Provide a detachable water -cooling resistance, including the box of square body and many resistance tubes, the box forms the water -cooling cavity, and the lateral wall of the box is provided with the water inlet and the water outlet that communicate water -cooling cavity, the two side plates of the box are provided with multiple mounting holes respectively, and the outside of each mounting hole is fixed with annular lock seat, and many resistance tubes are in clearance fit and pass through the lock seat of the two side plates of the box, so that the resistance tube is supported in the water -cooling cavity and the both ends are out of the box, the lock cover is screwed with each lock seat, and the resistance tube passes through the lock cover, and the first sealing ring is arranged between the lock cover and the lock seat, and the first sealing ring is extruded and fits the outer wall of the resistance tube, so that the resistance tube is sealed and locked.

[0009] Specifically, the end face of the lock seat is provided with a first positioning groove for embedding the first sealing ring, and the inner wall of the lock seat is further provided with a second positioning groove, and the second positioning groove is provided with a second sealing ring that fits the outer wall of the resistance tube.

[0010] Specifically, the lock seat and the side plate of the box are sealed and welded and fixed.

[0011] Specifically, a plurality of partitions are arranged in the box, and the plurality of partitions are arranged in parallel along the length direction of the resistance tube, each partition is provided with a clearance hole for the resistance tube to pass through, the plurality of partitions enclose the water -cooling cavity into a curved water -cooling channel, and the water inlet and the water outlet are respectively connected with the both ends of the water -cooling channel.

[0012] Specifically, the box includes a U-shaped frame, a top plate closing the top opening of the frame and an end plate closing the both ends of the frame, the frame, the top plate and the end plate are sheet metal parts, and the mounting hole and the lock seat are arranged on the end plate.

[0013] Specifically, the top of the partition is provided with a plurality of positioning protrusions, and the top plate is provided with a plurality of positioning holes, and the positioning protrusions are embedded in the positioning holes.

[0014] Specifically, the end plate is provided with a horizontal reinforcing beam and a vertical reinforcing beam arranged perpendicularly.

[0015] Specifically, the outer side wall of the box is provided with an ear, and the outer side bottom of the box is provided with a support.

[0016] Specifically, a blowdown pipe in a normally closed state is arranged at the bottom of the box, and the blowdown pipe is provided with a blowdown valve.

[0017] Specifically, a pressure relief pipe is arranged at the top of the box and communicates with the water -cooling cavity, and the pressure relief pipe is provided with an exhaust valve.

[0018] The utility model has the advantages of:

[0019] The detachable water-cooled resistance of the utility model, compared with prior art, resistance tube adopts the form of locking and fixing at both ends, if some resistance tubes appear abnormal damage in the using process, the corresponding resistance tube can be disassembled and replaced by checking, without replacing the whole module resistance, greatly reduce the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of a detachable water-cooled resistance in the embodiment.

[0021] Figure 2 It is a schematic view of a detachable water-cooled resistance in the embodiment after hiding the top plate.

[0022] Figure 3 It is an exploded view of a detachable water-cooled resistance in the embodiment.

[0023] Figure 4 It is a sectional view of a detachable water-cooled resistance in the embodiment.

[0024] Figure 5 It is Figure 4 The enlarged view of the encircling position.

[0025] Reference signs:

[0026] Box 1, water inlet 11, water outlet 12, mounting hole 13, frame 14, top plate 15, positioning hole 151, end plate 16, lifting lug 17, foot 18, blowdown pipe 19, blowdown valve 110, pressure relief pipe 111, exhaust valve 112;

[0027] Resistance tube 2;

[0028] Lock seat 3, first positioning groove 31, second positioning groove 32;

[0029] Lock cover 4, first sealing ring 5, second sealing ring 6;

[0030] Partition 7, let go of hole 71, positioning protrusion 72;

[0031] Horizontal reinforcing beam 8, vertical reinforcing beam 9. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiment of the utility model will be described clearly and completely in combination with the drawings in the embodiment of the utility model.Under the condition of no conflict, the following embodiment and the features in the embodiment can be combined mutually.

[0033] The detachable water-cooled resistance of the utility model, compared with prior art, resistance tube adopts the form of locking and fixing at both ends, if some resistance tubes appear abnormal damage in the using process, the corresponding resistance tube can be disassembled and replaced by checking, without replacing the whole module resistance, greatly reduce the maintenance cost. Figures 1 to 5As shown, including the box 1 and a plurality of resistance tube 2, the box 1 forms a water cooling cavity, the side wall of the box 1 is provided with the water inlet 11 and the water outlet 12 which communicate with the water cooling cavity; the two opposite side plates of the box 1 are respectively provided with a plurality of mounting holes 13, the outer side of each mounting hole 13 is fixed with an annular lock seat 3, a plurality of resistance tubes 2 are gap fitted through the lock seat 3 of the two opposite side plates of the box 1, so that the resistance tube 2 is supported in the water cooling cavity and the two end portions are out of the box 1. Each lock seat 3 is threadedly fitted with a lock cover 4, the resistance tube 2 passes through the lock cover 4, a first sealing ring 5 is arranged between the lock cover 4 and the lock seat 3, and the first sealing ring 5 is pressed to fit the outer wall of the resistance tube 2 by tightening the lock cover 4, so as to seal and lock the resistance tube 2.

[0034] Specifically, the end face of the lock seat 3 is provided with a first positioning groove 31 for embedding the first sealing ring 5, and the inner wall of the lock seat 3 is further provided with a second positioning groove 32, and the second positioning groove 32 is provided with a second sealing ring 6 which is in interference fit with the outer wall of the resistance tube 2. The unique double sealing groove design is adopted, and the double sealing grooves are placed with corresponding type silicon rubber O-shaped sealing rings. The first sealing ring 5 is in interference fit with the resistance tube 2, and the second sealing ring 6 is in slight gap fit with the resistance tube 2. After the first sealing ring 5 is installed, the lock cover 4 is tightened, the inner wall surface of the lock cover 4 is smooth and flat, the first sealing ring 5 can be pressed to tightly fit the outer wall of the metal tube resistance, so as to meet the high water pressure sealing requirement.

[0035] Specifically, the lock seat 3 and the side plate of the box 1 are sealed and welded to each other and fixed.

[0036] Specifically, a plurality of partitions 7 are arranged in the box 1, the plurality of partitions 7 are arranged in parallel along the length direction of the resistance tube 2, each partition 7 is provided with a gap hole 71 for the resistance tube 2 to pass through, and the plurality of partitions 7 enclose an S-shaped curved water cooling channel in the water cooling cavity, and the water inlet 11 and the water outlet 12 respectively communicate with the two end portions of the water cooling channel. The water inlet 11 and the water outlet 12 can be arranged on the same side of the box 1, and in actual use, they can also be arranged on different sides. The module adopts a square water tank design, compared with a cylindrical water tank, the resistance arrangement density is high, and the module is easy to stack, the volume of the box 1 is small, the module can achieve larger power, and the S-shaped water channel design is adopted in the water tank, the mechanical principle is fully utilized, the water pressure is effectively dispersed, and the bearing capacity of the water tank is greatly improved.

[0037] Specifically, the box 1 includes a U-shaped frame 14, a top plate 15 sealing the top opening of the frame 14, and end plates 16 sealing both ends of the frame 14, the frame 14, the top plate 15 and the end plate 16 are all sheet metal parts, and the mounting hole 13 and the lock seat 3 are arranged on the end plate 16.

[0038] Specifically, the top of the partition 7 is provided with a plurality of positioning protrusions 72, and the top plate 15 is provided with a plurality of positioning holes 151, and the positioning protrusions 72 are embedded in the positioning holes 151.

[0039] Specifically, the end plate 16 is provided with a transverse reinforcing beam 8 and a longitudinal reinforcing beam 9 arranged perpendicularly to each other, so as to increase the strength and avoid deformation of the end plate 16.

[0040] Specifically, the outer side wall of the box body 1 is provided with lifting lugs 17 for lifting.

[0041] Specifically, the bottom of the box body 1 is provided with a blowdown pipe 19 in a normally closed state, and the blowdown pipe 19 is provided with a blowdown valve 110.

[0042] Specifically, the top of the box body 1 is provided with a pressure relief pipe 111 connected to the water cooling cavity, and the pressure relief pipe 111 is provided with an exhaust valve 112.

[0043] The resistance in the embodiment is mainly used in the detection of the load of the generator set, and can be adapted to various medium-voltage systems for a long time.

[0044] In the description of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments.

[0045] Therefore, the above detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.

[0046] In the description of the utility model, it is necessary to explain that the terms "middle", "upper", "lower", "horizontal", "inner", "outer" and the like indicate the position or location relationship based on the position or location relationship shown in the drawings, or the position or location relationship of the product of the application when it is usually placed, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0047] In the description of the utility model, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "set", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be mechanically connected or electrically connected. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication between the 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.

Claims

1. A detachable water-cooled resistance, characterized by: The utility model provides a water-cooled resistance tube device, which comprises a box (1) in the shape of a square and a plurality of resistance tubes (2), the box (1) forms a water-cooled cavity, the side wall of the box (1) is provided with a water inlet (11) and a water outlet (12) communicating with the water-cooled cavity; the two opposite side plates of the box (1) are respectively provided with a plurality of mounting holes (13), the outer side of each mounting hole (13) is fixed with an annular lock seat (3), the plurality of resistance tubes (2) are gap-fitted through the lock seats (3) of the two opposite side plates of the box (1), so that the resistance tubes (2) are supported in the water-cooled cavity and the two end portions thereof are arranged outside the box (1); each lock seat (3) is screw-fitted with a lock cover (4), the resistance tube (2) passes through the lock cover (4), a first sealing ring (5) is arranged between the lock cover (4) and the lock seat (3), and the lock cover (4) is screwed to extrude the first sealing ring (5) to be in interference fit with the outer wall of the resistance tube (2), so that the resistance tube (2) is sealed and locked.

2. The detachable water-cooled resistance according to claim 1, characterized in that: The end face of the lock seat (3) is provided with a first positioning groove (31) for embedding the first sealing ring (5), and the inner wall of the lock seat (3) is further provided with a second positioning groove (32), and the second positioning groove (32) is provided with a second sealing ring (6) in interference fit with the outer wall of the resistance tube (2).

3. The detachable water-cooled resistance as claimed in claim 1, characterized in that: The lock seat (3) and the side plate of the box (1) are fixed by mutual sealing welding.

4. The detachable water-cooled resistance as claimed in claim 1, wherein: A plurality of partition plates (7) are arranged in the box (1), the plurality of partition plates (7) are arranged in parallel along the length direction of the resistance tube (2), each partition plate (7) is provided with a gap hole (71) for the resistance tube (2) to pass through, and the plurality of partition plates (7) enclose a curved water-cooled channel in the water-cooled cavity, and the water inlet (11) and the water outlet (12) are respectively connected to the two end portions of the water-cooled channel.

5. A water-cooled resistance according to claim 4, characterised in that: The box (1) comprises a U-shaped frame (14), a top plate (15) for sealing the top opening of the frame (14) and end plates (16) for sealing the two ends of the frame (14), the frame (14), the top plate (15) and the end plates (16) are all sheet metal parts, the mounting holes (13) and the lock seats (3) are arranged on the end plates (16).

6. A water-cooled electric resistance according to claim 5, characterized in that: The top of the partition plate (7) is provided with a plurality of positioning protrusions (72), and the top plate (15) is provided with a plurality of positioning holes (151), and the positioning protrusions (72) are embedded in the positioning holes (151).

7. The removable water-cooled resistance as claimed in claim 5, wherein: The end plate (16) is provided with a horizontal reinforcing beam (8) and a vertical reinforcing beam (9) arranged perpendicularly to each other.

8. The removable water-cooled resistance as claimed in claim 1, wherein: The outer side wall of the box (1) is provided with an ear (17), and the outer side bottom of the box (1) is provided with a supporting leg (18).

9. The removable water-cooled resistance as claimed in claim 1, wherein: A blowdown pipe (19) in a normally closed state is arranged at the bottom of the box (1), and the blowdown pipe (19) is provided with a blowdown valve (110).

10. The removable water-cooled resistance as claimed in claim 1, wherein: A pressure relief pipe (111) communicating with the water-cooled cavity is arranged at the top of the box (1), and the pressure relief pipe (111) is provided with an exhaust valve (112).

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