CN217641197U - Fuse with cooling jacket - Google Patents

Abstract

The utility model provides a fuse with cooling jacket, includes fusion tube, fuse-element, contact, arc extinguishing pad, end cover, arc extinguishing filler, coolant liquid through-hole tube head, the fuse-element passes the fusion tube welding on the contact at fusion tube both ends, and the fusion tube body inner chamber is filled there is the arc extinguishing filler, and the end cover is overlapped and is pressed on the contact, and the liner has the arc extinguishing pad between contact and the end cover. The utility model discloses a fuse compares with common fuse on the existing market, and the most apparent characteristic is exactly that the fusion tube body outside is provided with cooling jacket, flows through the radiating passageway of messenger's fuse cooling as the coolant liquid. In the use, the heat take away for the radiating effect of fuse obtains improving, under the operating mode condition that the design bore equal load current, voltage, can dwindle or shorten the overall dimension of fuse, and temperature rise and consumption can not rise, save material and installation space, weight reduction, reduce cost.

Description

Fuse with cooling jacket

The technical field is as follows:

the utility model belongs to the technical field of transmission line and consumer protection and specifically relates to a fuse that is used for playing the guard action to transmission line and consumer is related to.

Background

The fuse is an electric appliance which fuses and breaks a circuit by heat generated by the fuse when the current exceeds a specified value, and when the fuse is used, the fuse is connected in series in a protected circuit, and when overload or short-circuit current passes through the fuse, the fuse generates heat and fuses, so that the fuse plays a good role in protecting a power system, various electrical equipment and household appliances. The current fuses used for protecting the power-on devices or systems such as frequency converters, IGBTs (insulated gate bipolar transistors), high-voltage battery packs, high-voltage super capacitors, high-voltage lines, rail transit devices and the like are relatively complex in structure, large or long in size and high in manufacturing cost because of large load and high current and voltage difference. Simultaneously, the fuse is at the circular telegram in-process, because long-term load, the electric current of passing through is big, and the voltage difference is high, can make the temperature of fuse rise like this, and untimely heat dissipation can influence the life of casing and fuse.

In industry, in order to prevent that the too high damage fuse of operation process temperature, perhaps make life shorten, the fuse volume of the preparation of producing at present is all great, in order to increase heat radiating area, and when the fuse installation, need leave great safe space around the fuse, should not install other parts in this safe space, so that the fuse dispels the heat, and because of not having suitable installation space among the small consumer, just unable installation, need increase in addition and be equipped with a fuse case, install the fuse inside, then use with being connected with the consumer.

SUMMERY OF THE UTILITY MODEL

In order to solve the above not enough, the utility model aims to provide an increase the fuse that has cooling jacket outside the fusion tube, this kind of fuse simple structure, the volume is less, the radiating effect is good, long service life, self consumption and temperature rise are lower to save installation space, still can be applied to the consumer protection aspect in fields such as large-scale energy storage system, civil ship and military naval vessel, aviation/space launching device, photovoltaic power generation, wind power generation.

In order to achieve the above purpose, the utility model provides a following technical scheme:

1. a fuse with a cooling sleeve comprises a fusion tube, a melt, contacts, arc-extinguishing pads, end covers, arc-extinguishing fillers and a coolant through hole tube head, wherein the melt penetrates through the fusion tube and is welded on the contacts at two ends of the fusion tube; the method is characterized in that: the outside of fusion tube body is provided with cooling jacket, flows through the radiating passageway of messenger's fuse cooling as the coolant liquid.

2. The fusion tube with the cooling sleeve comprises the following components in a layout mode: the cooling sleeve is arranged outside the melting tube in a penetrating and sleeving manner in a spiral rotating mode, and a protective sleeve is arranged outside the cooling sleeve.

3. In order to prevent the leakage of the cooling liquid, a groove for placing the sealing ferrule is arranged at the joint of the through hole tube head of the cooling sleeve and the external cooling liquid through tube.

4. In order to prevent the cooling liquid from leaking into the inner cavity of the fusion tube due to the existence of the sand holes on the fusion tube, a layer of high-temperature-resistant sealant which can not be dissolved and decomposed when meeting the cooling liquid is coated on the inner wall of the fusion tube.

5. And the contact part of the outer rings at the two ends of the fusion tube and the contact is provided with a ring groove for placing an arc-extinguishing pad.

Fuse compare with common fuse on the existing market, the most apparent characteristic is exactly that the fusion tube body outside is provided with cooling jacket, flows through the radiating passageway of messenger's fuse cooling as the coolant liquid. During the installation use, install the cooling tube on tube head both sides, start-up coolant liquid (generally for water) valve, the coolant liquid flows the cooling jacket who sets up on the fusion tube body, conduct the fuse in the use because of the circular telegram, give off, the heat that radiates on the fusion tube body is taken away, reach the purpose that reduces fuse operating temperature, can effectively overcome the fuse and bear the circuit on through the heavy current, because generate heat under the load condition of high voltage difference, last high temperature influence adds the life problem of installing the casing of fuse-link and fuse additional.

Meanwhile, the cooling sleeve is arranged on the fusion tube, so that the heat dissipation effect of the fuse is improved, the overall dimension of the fuse can be reduced or shortened under the condition that the fuse is designed to bear the working conditions of the same load current and voltage, the temperature rise and the power consumption can not be increased, the material and the installation space are saved, the weight is reduced, and the cost is reduced.

Also because the fuse has set up cooling jacket, under the condition that has the coolant liquid to continuously flow through all around from the body, will continuously take away the fuse because the circular telegram and the heat that produces, can make the radiating effect of fuse become good, when the fuse is installed, the safety space that needs to be preserved around the fuse can be dwindled, just so can install the fuse in the consumer that is small comparatively conveniently, this characteristics are particularly suitable for installing large-scale energy storage system, civil ship and military naval vessel, on consumer such as aviation/space launch device, light in weight, small, it is good to dispel the heat, be favorable to alleviateing the holistic weight of equipment, improve the functioning speed of equipment.

Drawings

Fig. 1 is an explosion diagram of the components and the structure of the finished product of the embodiment of the present invention.

Fig. 2 is a schematic view of an appearance structure of the embodiment of the present invention.

Fig. 3 is an exploded view of the embodiment of the present invention.

Description of the reference numerals: 1. a contact; 2. an end cap; 3. an arc extinguishing pad; 4. a fusion tube; 5. melting; 6. an arc-extinguishing filler; 41. an outer layer of the fusion tube; 42. a fusion tube intermediate layer; 43. and a fuse tube inner layer.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

In the embodiment, as shown in fig. 1 to 3, a fuse with a cooling jacket comprises a contact 1, an end cap 2, an arc extinguishing pad 3, a fuse tube 4, a melt 5, and an arc extinguishing filler 6, wherein the fuse tube 4 is structurally divided into a fuse tube outer layer 41, a fuse tube intermediate layer 42, and a fuse tube inner layer 43. As shown in fig. 1, first, one end of the melt 5 is pre-threaded with the arc-extinguishing gasket 3, then the melt 5 is welded on the conductive contact 1 through the fixing edge bent at 90 degrees with the melt, then the melt 5 is threaded through the melting tube 4 and another arc-extinguishing gasket 3, the melt 5 is welded on the conductive contact 1 at the other end through the fixing edge bent at 90 degrees with the melt, so that the arc-extinguishing gasket 3 is lined on the welding surface of the conductive contact 1 and the melt 5, then the outer covers 2 are respectively sleeved on the conductive contacts 1 at the two ends of the melting tube 4, then mechanical pressing is carried out through special equipment, the joint of the outer cover 2 and the melting tube 4 is clamped on the melting tube 4, and then a semi-finished product of the fuse is formed.

As shown in fig. 1, the clamped fuse semi-finished product is filled with arc-extinguishing medium 6 in the gap between the fusion tube 4, the fused mass 5 and the arc-extinguishing gasket 3 through the arc-extinguishing medium filling hole 7 reserved on the outer guide cover at one end, and then the filling hole is sealed by the arc-extinguishing medium filling hole 7 and the arc-extinguishing medium filling hole sealing cover.

After the above steps are completed, a seal ring can be sleeved on the pipe head part (not shown in the figure) of the cooling sleeve as required, and then the pipe head of the cooling sleeve is screwed into the cooling through hole arranged in the middle of the fuse tube shell, so that the installation of the fuse with the cooling liquid through hole designed by the embodiment of the utility model is completed.

As shown in fig. 3, the fuse tube structure of the fuse with the cooling jacket is divided into 3 parts, namely, a fuse tube inner layer 43 and a fuse tube intermediate layer 42 (the hollow tube bodies in the spiral are arranged on the fuse tube inner layer 43), and a fuse tube outer layer 41 outside the fuse tube intermediate layer 42 covers the intermediate layer 42 to protect the intermediate layer 42 (the spiral tube bodies). It should be noted that before installation, the sealing glue is uniformly coated in the cavity inside the tube body of the fusion tube to prevent the cooling liquid from leaking into the cavity in which the melt is arranged inside the fusion tube through the sand holes of the tube body, and after solidification and drying, the fuse is installed.

In addition, the manufacturing of the fusion tube can be designed into an integral type, namely, the tube body of the fusion tube is designed into a hollow pipeline with a spiral mode in the middle and a coating layer on the inner layer and the outer layer, and the structure is completed once; as shown in fig. 3, the inner layer may be a conventional fusion tube (i.e. fusion tube inner layer 43), on the basis, a spiral hollow tube (i.e. fusion tube intermediate layer 42) is additionally manufactured, and then a protective sleeve (fusion tube outer layer 41) is manufactured, when the fuse is installed and used, the spiral hollow tube is sleeved outside the conventional fuse, then a sleeve is sleeved outside the spiral hollow tube, and all the sleeve is sleeved by an end cover 2 to form a whole, when the fuse is specifically used, after the fuse is installed on a line or equipment to be protected in series through contacts 2 at two ends, then a through pipe (not shown in the figure) for supplying and flowing cooling liquid is installed at two ends of a cooling liquid sleeve pipe head (not shown in the figure), the installation is confirmed to be in place, and after the fuse is sealed well, a cooling liquid valve is opened, at this time, the cooling liquid flows through the fusion tube sleeve, most of heat generated by heating of the fuse in a power-on state can be taken away, so that the fuse can work in a low-temperature state for a long time.

The utility model discloses a design, in accessory selection and the manufacturing process, in order to prevent the coolant liquid seepage, cooling jacket through-hole tube head is provided with the recess of placing the sealing ring with external coolant liquid siphunculus junction, the back is got up in the cooling jacket on external cooling tube and the fuse body like this, can prevent the coolant liquid effectively from the gap seepage of junction between them, sealed effect has both been improved, the pressure of through-flow liquid in the body has also been kept, guarantee that the coolant liquid flows according to predetermineeing the velocity of flow, and take away the heat that the inside fuse-element of body produced because of the circular telegram at the flow in-process.

In the selection of coolant liquid, the utility model discloses preferred recommended cost is low, the source is convenient, the good ordinary fresh water of heat transfer thermal conductivity, of course, along with scientific and technological development, at present and in the future have a lot of costs to be close ordinary fresh water, the preparation is convenient, the more excellent coolant liquid of heat transfer thermal conductivity gets into and uses the market, and select other coolant liquids if can promote the utility model discloses the reduction fuse that the scheme pursued, especially large-scale fuse's operating temperature improves the protective capacities of fuse, increase of service life, also the utility model discloses it is happy.

To sum up, the fuse compare with common fuse on the existing market, the most apparent characteristic is exactly that the fusion tube body outside is provided with cooling jacket, flows through the radiating passageway of messenger's fuse cooling as the coolant liquid. During the installation use, install the cooling tube on tube head both sides, start coolant liquid (generally for water) valve, the coolant liquid flows through the coolant liquid through-hole that the fuse tube body outside set up, conduct the fuse in the use because of the circular telegram, give off, the heat that radiates on the fuse tube body is taken away, reach the purpose that reduces fuse operating temperature, can effectively overcome the fuse and bear the circuit on through the heavy current, because generate heat under the load condition of high voltage difference, last high temperature influence adds the life problem of installing the casing of fuse-link and fuse additional.

Meanwhile, the cooling sleeve is arranged on the fusion tube, so that the heat dissipation effect of the fuse is improved, the overall dimension of the fuse can be reduced or shortened under the condition that the fuse is designed to bear the working conditions of the same load current and voltage, the temperature rise and the power consumption can not be increased, the material and the installation space are saved, the weight is reduced, and the cost is reduced.

Also because the fuse has set up cooling jacket, under the condition that has the coolant liquid to continuously flow through all around from the body, will continuously take away the fuse because the circular telegram and the heat that produces, can make the radiating effect of fuse become good, when the fuse is installed, the safety space that needs to be preserved around the fuse can be dwindled, just so can install the fuse in the consumer that is small comparatively conveniently, this characteristics are particularly suitable for installing large-scale energy storage system, civil ship and military naval vessel, on consumer such as aviation/space launch device, light in weight, small, it is good to dispel the heat, be favorable to alleviateing the holistic weight of equipment, improve the functioning speed of equipment.

Claims (5)

1. A fuse with a cooling sleeve comprises a fusion tube, a melt, contacts, arc extinguishing pads, end covers, arc extinguishing fillers and a cooling liquid through hole tube head, wherein the melt penetrates through the fusion tube and is welded on the contacts at two ends of the fusion tube; the method is characterized in that: and a cooling sleeve is arranged outside the fusion tube body and is used as a channel for cooling the fuse by flowing cooling liquid.

2. A fuse with a cooling jacket as in claim 1, wherein: the fusion tube with the cooling sleeve comprises the following components in a layout mode: the cooling sleeve is arranged outside the melting tube in a penetrating and sleeving way in a spiral rotating mode, and a protective sleeve is arranged outside the cooling sleeve.

3. A fuse with a cooling jacket according to claim 1, wherein: in order to prevent the leakage of the cooling liquid, a groove for placing the sealing ferrule is arranged at the joint of the through hole pipe head of the cooling sleeve and the external cooling liquid through pipe.

4. A fuse with a cooling jacket according to claim 1, wherein: in order to prevent the cooling liquid from leaking into the inner cavity of the fusion tube due to the existence of the sand holes on the fusion tube, a layer of high-temperature-resistant sealant which can not be dissolved and decomposed when meeting the cooling liquid is coated on the inner wall of the fusion tube.

5. A fuse with a cooling jacket as in claim 1, wherein: and the contact part of the outer rings at the two ends of the fusion tube and the contact is provided with a ring groove for placing an arc-extinguishing pad.

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