Novel water-cooled dummy load device

Abstract

The utility model discloses a novel water-cooled dummy load device which comprises a cabinet body, a water tank, a water pump, a fixing mechanism and a radiator are assembled in the cabinet body, a resistor is installed in the fixing mechanism, a connector is installed on the cabinet body, and the connector is electrically connected with the resistor through the fixing mechanism. The water tank, the water pump, the fixing mechanism and the radiator are sequentially communicated through a plurality of pipelines to form a water flow loop, cooling water in the water tank is driven by the water pump to be conveyed into the fixing mechanism, and the cooling water flowing into the fixing mechanism flows through the inner surface and the outer surface of the resistor to cool the resistor. The circulating cooling device is compact in structure and easy to operate, a closed circulating cooling water loop is formed through the water tank, the water pump and the radiator, no external water flow is needed, the water-saving effect is achieved, and the circulating cooling device works stably and reliably and is low in operation cost.

Description

Technical Field

[0001] The utility model relates to the technical field of dummy loads, in particular to a novel water-cooled dummy load device. Background Art

[0002] my country boasts a vast territory, a large population, and a dense distribution of small and medium-sized cities. Current national requirements for the broadcasting and television industry dictate that all prefecture-level cities establish medium-wave transmitters. Based on the population size and area of ​​a city, a 10kW medium-wave broadcast transmitter with a power rating sufficient to achieve effective coverage is sufficient. A 15kW, 50Ω medium-wave dummy load, commonly used for commissioning and maintenance of 10kW transmitters, is essential equipment for every radio station.

[0003] Existing dummy load cooling uses conventional water cooling, burying the load in distilled water. Its heat dissipation relies on external tap water as a cooling medium. The disadvantage is that water resources are extremely wasted. According to on-site measurements during the commissioning of a 10kW transmitter, the dummy load consumes more than 20 tons of water per hour. Summary of the Invention

[0004] The purpose of the present utility model is to provide a novel water-cooled dummy load device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a novel water-cooled dummy load device, comprising a cabinet, wherein a water tank, a water pump, a fixing mechanism and a radiator are assembled in the cabinet, a resistor is installed in the fixing mechanism, a connector is installed on the cabinet, and the connector is electrically connected to the resistor through the fixing mechanism; the water tank, water pump, fixing mechanism and radiator are connected in sequence through a number of pipes to form a water flow loop, the cooling water in the water tank is driven by the water pump to be transported to the fixing mechanism, the cooling water flowing into the fixing mechanism flows through the inner and outer surfaces of the resistor to cool it, then enters the radiator to dissipate heat and finally flows back to the water tank to achieve circulating cooling.

[0006] Furthermore, the water outlet of the water tank is connected to the water pump input through a first pipe, the water pump output is connected to the fixing mechanism through a second pipe, a resistor is installed in the fixing mechanism, the other end of the fixing mechanism is connected to the radiator input through a third pipe, and the radiator output is connected to the water tank through the third pipe; temperature sensors are installed on the second pipe and the third pipe to detect the water temperature of the water inlet and outlet respectively.

[0007] Furthermore, the fixing mechanism includes a pair of fixed ends with hollow structures and a protective tube. The inner end faces of the two fixed ends are provided with a circle of card grooves. The two ends of the protective tube are respectively inserted into the card grooves on both sides. The outer end faces of the fixed ends on both sides are detachably connected to the corresponding pipes. The inner end faces of the fixed ends on both sides are threadedly connected with connectors with hollow structures. The two ends of the resistor are respectively plugged into the connectors on both sides. Several through holes are evenly spaced on the side walls of the connector. Part of the cooling water flow flows directly into the interior of the resistor from the connector, and the other part flows out through the through holes and flows through the outer surface of the resistor. The outer wall of the fixed end is electrically connected to the conductive sheet of the connector.

[0008] Furthermore, the inner wall of each of the connecting heads extends inward to form a convex edge, and a clamping plate can be detachably placed in the connecting heads on both sides, and the clamping plate abuts against the outer end surface of the convex edge. A fixing hole is provided in the middle of the convex edges on both sides, and a connecting rod is connected between the fixing holes on both sides. The connecting rod passes through the interior of the resistor, and a threaded rod is provided in the middle of the two end portions of the connecting rod. The threaded rod passes through the fixing hole and extends to the outer end side of the clamping plate, and a fixing nut is threadedly connected thereto. The clamping plate is provided with a plurality of openings arranged in a circular manner along its own axis.

[0009] Furthermore, two vertically arranged screws are provided on the inner wall of the top of the cabinet body, and two fixing brackets are slidably arranged between the two screws. Semicircular openings are provided in the middle of the bottom end of the upper fixing bracket and the middle of the top end of the lower fixing bracket. After the fixing brackets on both sides are fitted together, the openings on both sides are pieced together to form a circular fixing opening that matches the outer wall of the protective tube. The bottoms of the two screws are threadedly connected with nuts, and the nuts are used to abut against the bottom surface of the lower fixing bracket to provide a supporting and fixing effect, and both fixing brackets are made of insulating material.

[0010] Furthermore, a sealing strip is provided on the inner wall of the card slot.

[0011] Furthermore, a water level gauge is provided on the water tank.

[0012] Furthermore, the radiator is composed of a heat dissipation water row and a fan installed on the heat dissipation water row.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model has a compact structure and is easy to operate. It forms a closed circulating cooling water loop through the water tank, water pump and radiator, and does not require external water flow to achieve water-saving effects. It works stably and reliably with low operating costs.

[0015] 2. The utility model adopts the design of the protective tube, the connector and the through hole thereon, so that the inflowing water can completely cover the inner and outer heating surfaces of the resistor, thereby achieving the effect of rapid heat dissipation, significantly improving the heat dissipation efficiency, and effectively extending the service life of the dummy load. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a novel water-cooled dummy load device of the utility model;

[0017] Figure 2 This is a side view of a novel water-cooled dummy load device of the present utility model;

[0018] Figure 3 This is a structural diagram of the fixing mechanism of a new type of water-cooled dummy load device of the utility model.

[0019] In the figure, cabinet 1, water tank 2, water pump 3, fixing mechanism 4, radiator 5, resistor 6, connector 7, first pipe 8, second pipe 9, third pipe 10, fourth pipe 11, temperature sensor 12, fixing end 13, protective tube 14, connector 15, through hole 16, clamping plate 17, connecting rod 18, threaded rod 19, fixing nut 20, opening 21, screw 22, fixing bracket 23, nut 24, water level gauge 25. DETAILED DESCRIPTION

[0020] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0021] like Figures 1 to 3 As shown, a novel water-cooled dummy load device includes a cabinet 1, in which a water tank 2, a water pump 3, a fixing mechanism 4 and a radiator 5 are assembled. A resistor 6 is installed in the fixing mechanism 4, and a connector 7 is installed on the cabinet 1. The connector 7 is electrically connected to the resistor 6 through the fixing mechanism 4; the water tank 2, the water pump 3, the fixing mechanism 4 and the radiator 5 are connected in sequence by a number of pipes to form a water flow loop. The cooling water in the water tank 2 is driven by the water pump 3 to be transported to the fixing mechanism 4. The cooling water flowing into the fixing mechanism 4 flows through the inner and outer surfaces of the resistor 6 to cool it, enters the radiator 5 to dissipate heat, and finally flows back to the water tank 2 to achieve circulating cooling.

[0022] In this embodiment, the water outlet end of the water tank 2 is connected to the input end of the water pump 3 through a first pipe 8, the output end of the water pump 3 is connected to the fixing mechanism 4 through a second pipe 9, the other end of the fixing mechanism 4 is connected to the input end of the radiator 5 through a third pipe 10, and the output end of the radiator 5 is connected to the water tank 2 through a fourth pipe 11; temperature sensors 12 are installed on both the second pipe 9 and the third pipe 10 to respectively detect the water temperature at the water inlet and outlet.

[0023] In this embodiment, the fixing mechanism 4 includes a pair of fixed end heads 13 and a protective tube 14 with a hollow structure. The inner end faces of the two fixed end heads 13 are each provided with a circle of card grooves, and the two ends of the protective tube 14 are respectively inserted into the card grooves on both sides. The outer end faces of the fixed end heads 13 on both sides are respectively detachably connected to the corresponding pipes. The inner end faces of the fixed end heads 13 on both sides are threadedly connected with connectors 15 with a hollow structure. The two ends of the resistor 6 are respectively plugged into the connectors 15 on both sides. Several through holes 16 are evenly spaced on the side walls of the connector 15. Part of the cooling water flow flows directly into the interior of the resistor 6 from the connector 15, and the other part flows out through the through holes 16 and flows through the outer surface of the resistor 6. The fixed end heads 13 and the connector heads 15 are both made of stainless steel, and the outer wall of the fixed end head 13 is electrically connected to the conductive sheet of the connector 7.

[0024] In this embodiment, the inner wall of each connector 15 extends inward to form a convex edge, and a clamping plate 17 can be detachably placed in the connectors 15 on both sides. The clamping plate 17 abuts against the outer end surface of the convex edge. A fixing hole is opened in the middle of the convex edges on both sides, and a connecting rod 18 is connected between the fixing holes on both sides. The connecting rod 18 passes through the interior of the resistor 6. A threaded rod 19 is provided at the middle of the end of each side of the connecting rod 18. The threaded rod 19 passes through the fixing hole and extends to the outer end side of the clamping plate 17. A fixing nut 20 is threadedly connected thereto. A plurality of openings 21 are opened on the clamping plate 17 in a circular arrangement along its own axis.

[0025] When installing the resistor 6, first unscrew the connectors 15 on the fixed ends 13 on both sides, and then unscrew the fastening nut 24 in one of the connectors 15 on one side, and then the connecting rod 18 can be pulled out from the clamping plate 17, and then the inside of the resistor 6 is passed through the connecting rod 18, and then the two ends of the resistor 6 are respectively inserted into the connectors 15, and then the connecting rod 18 is reinserted into the connector 15 and tightened with the fastening nut 24. In the process of tightening the fastening nut 24, the connector 15 on this side will be squeezed by the clamping plate 17, so that it moves closer to the inside, thereby shortening the distance between the connectors 15 on both sides to ensure that the resistor 6 and the connector 15 are firmly plugged in, and finally the protective tube 14 is clamped and the fixed end 13 is reinstalled.

[0026] In this embodiment, two vertically arranged screws 22 are provided on the inner wall of the top of the cabinet 1, and two fixing brackets 23 are slidably provided between the two screws 22. Semicircular openings are opened in the middle of the bottom end of the upper fixing bracket 23 and the middle of the top end of the lower fixing bracket 23. After the fixing brackets 23 on both sides are fitted together, the openings on both sides are pieced together to form a circular fixing opening that is compatible with the outer wall of the protective tube 14. The bottoms of the two screws 22 are threadedly connected with nuts 24, which are used to abut against the bottom surface of the lower fixing bracket 23 to provide a supporting and fixing effect, and the two fixing brackets 23 are both made of insulating material.

[0027] In this embodiment, a sealing strip is provided on the inner wall of the card slot to prevent water from flowing out from the gap of the protection tube 14 .

[0028] In this embodiment, a water level gauge 25 is provided on the water tank 2 to facilitate real-time observation of the water level in the water tank 2 and timely replenishment.

[0029] In this embodiment, the radiator 5 is composed of a heat dissipation water row and a fan installed on the heat dissipation water row.

[0030] The working principle of this embodiment is as follows:

[0031] During the test, the transmitter output is connected to the dummy load through the connector 7. The high-frequency energy output by the transmitter is converted into heat energy through the resistor 6. At this time, the water pump 3 is started to transport the distilled water in the water tank 2 to the fixing mechanism 4; the water flow is injected from the fixed end 13 on the water inlet side, and when it flows into the connector 15, a part of it directly enters the inside of the resistor 6 along the connector 15 to cool its inner surface, and the other part flows out from the through hole 16 of the connector 15 and flows into the space between the outer surface of the resistor 6 and the protective tube 14, thereby cooling the outer surface of the resistor 6. Finally, the water that has absorbed the heat of the resistor 6 flows into the radiator 5, and the radiator 5 dissipates heat and cools the water before flowing back to the water tank 2, completing a cycle of cooling.

[0032] 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 make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel water-cooled dummy load device, comprising a cabinet, characterized in that: A water tank, a water pump, a fixing mechanism and a radiator are assembled in the cabinet. A resistor is installed in the fixing mechanism. A connector is installed on the cabinet, and the connector is electrically connected to the resistor through the fixing mechanism. The water tank, water pump, fixing mechanism and radiator are connected in sequence through several pipes to form a water flow loop. The cooling water in the water tank is driven by the water pump and transported to the fixing mechanism. The cooling water flowing into the fixing mechanism flows through the inner and outer surfaces of the resistor to cool it, enters the radiator to dissipate heat, and finally flows back to the water tank to achieve circulating cooling.

2. A novel water-cooled dummy load device according to claim 1, characterized in that: The water outlet of the water tank is connected to the input end of the water pump through a first pipe, the output end of the water pump is connected to the fixing mechanism through a second pipe, the other end of the fixing mechanism is connected to the input end of the radiator through a third pipe, and the output end of the radiator is connected to the water tank through a fourth pipe; temperature sensors are installed on the second pipe and the third pipe to respectively detect the water temperature at the water inlet and water outlet.

3. The novel water-cooled dummy load device according to claim 1, characterized in that: The fixing mechanism includes a pair of fixed ends with hollow structures and a protective tube. The inner end faces of the two fixed ends are provided with a circle of card grooves. The two ends of the protective tube are respectively inserted into the card grooves on both sides. The outer end faces of the fixed ends on both sides are detachably connected to the corresponding pipes. The inner end faces of the fixed ends on both sides are threadedly connected with connectors with hollow structures. The two ends of the resistor are respectively plugged into the connectors on both sides. Several through holes are evenly spaced on the side walls of the connector. Part of the cooling water flow flows directly into the interior of the resistor from the connector, and the other part flows out through the through holes and flows through the outer surface of the resistor. The outer wall of the fixed end is electrically connected to the conductive sheet of the connector.

4. The novel water-cooled dummy load device according to claim 3 is characterized in that: The inner wall of each connecting head extends inward to form a convex edge, and a clamping plate can be detachably placed in the connecting heads on both sides, and the clamping plate abuts against the outer end surface of the convex edge. A fixing hole is provided in the middle of the convex edges on both sides, and a connecting rod is connected between the fixing holes on both sides. The connecting rod passes through the interior of the resistor, and a threaded rod is provided in the middle of the two end portions of the connecting rod. The threaded rod passes through the fixing hole and extends to the outer end side of the clamping plate, and a fixing nut is threadedly connected thereto. The clamping plate is provided with a plurality of openings arranged in a circle along its own axis.

5. The novel water-cooled dummy load device according to claim 3 is characterized in that: Two vertically arranged screws are provided on the top inner wall of the cabinet body, and two fixing brackets are slidably arranged between the two screws. Semicircular openings are opened in the middle of the bottom end of the upper fixing bracket and the middle of the top end of the lower fixing bracket. After the fixing brackets on both sides are fitted together, the openings on both sides are pieced together to form a circular fixing opening that is compatible with the outer wall of the protective tube. The bottoms of the two screws are threadedly connected with nuts, and the nuts are used to abut against the bottom surface of the lower fixing bracket to provide a supporting and fixing effect, and both fixing brackets are made of insulating material.

6. The novel water-cooled dummy load device according to claim 3 is characterized in that: A sealing strip is provided on the inner wall of the slot.

7. The novel water-cooled dummy load device according to claim 1, characterized in that: The water tank is provided with a water level gauge.

8. The novel water-cooled dummy load device according to claim 1, characterized in that: The radiator consists of a heat dissipation water row and a fan installed on the heat dissipation water row.

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