CN210296090U - Sealing structure used between high-frequency power supply box body and radiator - Google Patents
Sealing structure used between high-frequency power supply box body and radiator Download PDFInfo
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- CN210296090U CN210296090U CN201921402233.9U CN201921402233U CN210296090U CN 210296090 U CN210296090 U CN 210296090U CN 201921402233 U CN201921402233 U CN 201921402233U CN 210296090 U CN210296090 U CN 210296090U
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Abstract
The utility model discloses a seal structure for between high frequency power supply box and the radiator is used in the high-power high frequency power supply for the electric precipitation. The sealing opening diameter ratio between the radiator and the high-frequency power supply oil tank is larger, the transformer oil is a liquid with good permeability, and when the sealing rubber gasket is adopted for pressing and sealing, oil leakage and oil leakage are easily caused. The utility model discloses sealed cushion of heavy-calibre interface to between high frequency power supply radiator and the oil tank body has carried out the design, adopts the sealed cushion of polyacrylate rubber material preparation, has improved the shape of the sealed cushion of heavy-calibre, has solved the oil leakage problem of interface between radiator and the oil tank. Adopt the utility model discloses the sealed cushion of preparation can stop the sealed interface oil leakage between high frequency power supply oil tank and the radiator completely, ensures the operation safety of high frequency power supply.
Description
Technical Field
The utility model relates to a dust removal especially relates to a seal structure that is used for between high-frequency power supply box and the radiator with the sealed field of high-power high-frequency power supply oil tank.
Background
The high-frequency power supply for the electric dust collector has the remarkable advantages of small output ripple, high average voltage and current, small volume, light weight, high conversion efficiency and power factor, small influence of a three-phase power supply on a power grid and the like, is widely applied to the field of electric dust collection, and needs to ensure the heat dissipation efficiency of the high-frequency power supply in order to maintain better dust collection efficiency. Generally, a radiator is arranged on a side plate of a high-frequency power supply oil tank for radiating, the external dimension of the radiator is larger, so that the sealing caliber between the radiator and the high-frequency power supply oil tank is larger, and the transformer oil with better radiating effect is liquid with good permeability, and when a sealing rubber gasket is adopted for pressing and sealing, oil leakage and oil leakage are easily caused. The oil leakage not only pollutes the high-frequency power supply and affects the safe operation of products, but also affects the operation safety of field equipment, so that the oil leakage phenomenon of a high-frequency power supply oil tank is avoided when the high-frequency power supply is manufactured. The higher the smoothness of the contact surfaces of the radiator and the oil tank side plate and the sealing ring is, the better the sealing performance is. However, due to the limitations of the level of machining processes, the finish of the contact surface cannot be made very high, which would otherwise increase the machining costs.
Rubber, as a sealing material, is superior to metal in that it can be deformed greatly under a small strain force, and therefore, tolerance can be compensated by deformation of the rubber seal, a large contact stress is not required, and a relatively large compression deformation (10% to 30%) and a large tensile deformation (50% to 100%) are possible at the time of assembling the seal. The interface between high frequency power supply oil tank and the radiator generally adopts the rubber pad to press from both sides tight seal, and in the oil tank of current high frequency power supply, the sealed plain rubber packing ring that adopts between radiator and the oil tank curb plate is sealed, because the material of radiator adopts pure aluminium preparation, when adopting bolt and nut to compress tightly the rubber packing ring, arouses the deformation of pure aluminium material easily, and the operator hardly compresses tightly the cushion. The rubber sealing gasket adopting the existing scheme is easy to cause the deformation of the tapping interface on the radiator, and the oil leakage of the interface is easy to cause; the rubber mat is difficult to compress, the experience of an operator is required to be rich, the force when the nut is screwed is strictly controlled, and the requirement on the working quality of the operator is high.
The polyacrylate rubber contains a completely saturated main chain structure, so that the polyacrylate rubber has the characteristics of heat resistance, oxygen resistance, ultraviolet irradiation and the like; the second carbon atom of the main chain is provided with a carbonyl group with strong polarity, so that the rubber has outstanding oil resistance, hydrophilicity and hygroscopicity, and compared with the traditional rubber, the polyacrylate rubber is softer and requires smaller pressing force. The utility model discloses sealed pad of heavy-calibre interface to between high frequency power supply radiator and the oil tank body has carried out the design, adopts the seal ring of polyacrylate rubber materials preparation, has improved the shape of the sealed cushion of heavy-calibre, has solved the oil leakage problem of interface between radiator and the oil tank. Adopt the utility model discloses the sealed cushion of preparation can stop the sealed interface oil leakage between high frequency power supply oil tank and the radiator completely, ensures the operation safety of high frequency power supply.
Disclosure of Invention
In order to solve the oil leak problem of the heavy-calibre installation interface between radiator and the transformer tank, the utility model designs a seal structure for between high frequency power supply box and the radiator, especially designed the sealed cushion of flexible of a polyacrylic acid fat material, do not need big packing force in the installation, be difficult to arouse the deformation of pure aluminium material, also lower to operator's work quality requirement.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a sealing structure used between a high-frequency power supply box body and a radiator comprises the radiator and an oil tank, wherein a mounting interface is arranged on a side plate of the oil tank, and the sealing structure also comprises a sealing rubber gasket, a screw rod and a compression nut; a circle of sealing rubber gasket mounting groove is formed in the side plate along the edge of the mounting interface, the sealing rubber gasket is arranged in the mounting groove and matched with the mounting groove in shape, and the mounting surface of the radiator is tightly attached to the mounting interface; the width of each part of the sealing rubber mat main body is equal, annular mounting holes are formed in the sealing rubber mat main body at equal intervals, the annular width of each mounting hole is half of the width of the sealing rubber mat, the distance between every two adjacent mounting holes is 45-50 mm, and the width d of the sealing rubber mat main body is 8-10 mm; threaded holes corresponding to the positions of the sealing rubber gasket mounting holes are formed in the mounting surfaces of the oil tank side plate and the radiator, and the radiator and the oil tank are locked through a screw and a compression nut; the oil tank is a high-frequency power supply oil tank, and the working frequency of the high-frequency power supply is 20 k-100 k Hz; the sealing rubber pad is made of polyacrylate.
Preferably, the high-frequency power supply oil tank side plate is made of steel.
Preferably, the material of the heat sink is aluminum.
Preferably, the diameter of the mounting hole is 6 mm.
Preferably, the thickness of the sealing rubber gasket is 3-6 mm.
Preferably, the mounting interface on the oil tank side plate is rectangular.
Preferably, the sealing rubber gasket is rectangular, and four corners of the sealing rubber gasket are respectively provided with an annular mounting hole.
The utility model discloses the beneficial effect who possesses is:
(1) the radiator in the sealing structure is made of pure aluminum, so that the radiating effect is good; compared with the traditional rubber, the polyacrylate rubber is softer, the required pressing force is smaller, the deformation of the pure aluminum radiator caused by the excessive pressing force can be effectively prevented, the working strength of an operator for screwing the nut is reduced, and the problem of thread slippage of tapping threads on the radiator is solved;
(2) the shape structure of the polyacrylate rubber pad is designed, the shape of a large-caliber rectangular mounting opening is taken as a main part, and the area of the sealing rubber pad is reduced under the condition that the mounting pretightening force of the screw and the gland nut is constant; the width of the rectangular rubber between the mounting holes on the sealing rubber pad is equal to the width of the ring of the outer ring of the mounting hole, and the mounting holes are uniformly distributed on the sealing rubber pad, so that the sealing rubber pad is uniformly stressed, the problem of oil leakage of an interface between a radiator and an oil tank is solved, and the technical requirement for mounting the sealing rubber pad is reduced.
Drawings
Fig. 1 is a schematic view of a sealing structure used between a high-frequency power supply box body and a radiator of the present invention;
FIG. 2 is a schematic view of the installation of the sealing rubber gasket, the heat sink and the screw;
FIG. 3 is a schematic view of the sealing rubber gasket of the present invention;
in the figure: the oil tank comprises a radiator 1, a sealing rubber gasket 2, an oil tank side plate 3, a screw rod 4 and a compression nut 5.
Detailed Description
To describe the present invention more specifically, the following detailed description will be made with reference to the accompanying drawings.
A sealing structure used between a high-frequency power supply box body and a radiator comprises a radiator 1 and an oil tank, wherein a mounting interface is arranged on a side plate 3 of the oil tank, and the sealing structure further comprises a sealing rubber gasket 2, a screw rod 4 and a compression nut 5; a circle of sealing rubber gasket mounting groove is formed in the side plate along the edge of the mounting interface, the sealing rubber gasket is arranged in the mounting groove and matched with the mounting groove in shape, and the mounting surface of the radiator is tightly attached to the mounting interface; the width of each part of the sealing rubber mat main body is equal, annular mounting holes are formed in the sealing rubber mat main body at equal intervals, the annular width of each mounting hole is half of the width of the sealing rubber mat, the distance between every two adjacent mounting holes is 45-50 mm, and the width d of the sealing rubber mat main body is 8-10 mm; threaded holes corresponding to the positions of the sealing rubber gasket mounting holes are formed in the mounting surfaces of the oil tank side plate and the radiator, and the radiator and the oil tank are locked through a screw and a compression nut; the oil tank is a high-frequency power supply oil tank, and the working frequency of the high-frequency power supply is 20 k-100 k Hz.
As the preferred embodiment of the present invention, the material of the high frequency power supply tank side plate is steel, and the material of the heat sink is aluminum.
As shown in fig. 1, the mounting interface between the radiator and the transformer oil tank has a large caliber, the permeability of the transformer oil is good, and a certain oil pressure exists in the oil tank, so that the sealing difficulty between the radiator and the transformer oil tank is increased, and the oil leakage is easy to occur. The sealing device of the interface mainly comprises a radiator, a sealing gasket, an oil tank side plate, a screw rod, a compression nut and the like, and the sealing rubber gasket is deformed by compressing a plurality of nuts so as to play a role in sealing.
As shown in fig. 2, which is a schematic view of the installation of the sealing rubber gasket, the heat sink and the screw, the connection between the screw 4 and the heat sink 1 is a tapping thread connection. Because the radiator is made of pure aluminum, the hardness of the pure aluminum is much lower than that of steel, so that the tension force is limited when the screw and the radiator are connected, and when the tension force is too large, tapping threads on the radiator are easy to slip, and the compression of the sealing interface is affected.
The structure of the sealing rubber mat is shown in fig. 3. It is known that the larger the pressure applied to the sealing rubber gasket, the larger the deformation of the sealing rubber gasket, and the better the sealing effect. However, since the pure aluminum radiator is soft, the radiator is deformed due to excessive pretightening force. According to principles of physics regarding pressure: p ═ F/S, where P: pressure, F pressure, S force area. Under the condition that the material of the radiator is selected, the maximum pressure when the radiator is drilled, tapped and installed with a bolt and compressed by a nut is certain, and the tapped thread on the radiator can be damaged when the maximum pressure exceeds the value. The value of F in the formula is therefore constant. If the deformation of the pressed rubber pad is to be enhanced, the pressure on the rubber pad, i.e., the value of P, must be increased. In addition, the number of the compression bolts on the rubber mat is changed, so that the pressure on the rubber mat can be increased. However, too much space is left on the rubber mat, which not only is limited by the shape space of the rubber mat, but also increases the difficulty of manufacture and the workload of installation, and is not economical.
According to the formula, the pressure on the rubber mat can be increased by reducing the value of S in the denominator. According to fig. 3, the value of S is proportional to the width d of the cushion, and the larger d, the larger S, and the smaller d, the smaller S. Therefore, the width of the rubber mat is reduced as much as possible, the stress area S of the rubber mat is reduced, and the pressure F of the rubber mat is increased, so that the deformation of the rubber mat is changed, and the oil leakage is prevented. Therefore, in the embodiment, the distance between the adjacent mounting holes is 45mm, the width d of the rectangular rubber is 8mm, the radius of the round rubber is larger than that of the mounting holes by d/2, and the sealing rubber pad is uniformly stressed;
the softer the material of the sealing rubber gasket, the more beneficial the improvement of the sealing interface performance. When the sealing rubber gasket is made of a material with good flexibility, the sealing rubber gasket can fill capillary holes on the sealing interface surface more easily when receiving the pressure of the compression nut, and the tiny holes on the sealing contact surface are main factors causing oil leakage of the sealing interface. Under the effect of pressure, if can be completely with the material of sealed pad squeeze into these capillary holes in, just can stop the oil leakage oil of sealed interface completely, play totally sealed effect, consequently the utility model discloses a polyacrylate is chooseed for use to the material of sealed cushion.
As a preferred embodiment of the present invention, the sealing rubber pad is rectangular, and four corners of the sealing rubber pad are respectively provided with an annular mounting hole; the diameter of the mounting hole of the sealing rubber mat is 6mm, and the thickness of the sealing rubber mat is 3 mm.
Adopt seal structure carry out the operation of electrostatic precipitator equipment, install the equipment on the radiator backplate and can produce the heat that lasts, in these heats transmitted the transformer oil in the high frequency power supply oil tank through the radiator, transformer oil passes through the extrinsic cycle, with heat transfer to the air in.
The above-mentioned detailed description is to the technical solution and the beneficial effects of the present invention, it should be understood that the above is only the most preferred embodiment of the present invention, and is not used for limiting the present invention, any modification, supplement, equivalent replacement, etc. made within the principle scope of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A sealing structure used between a high-frequency power supply box body and a radiator comprises the radiator and an oil tank, wherein a mounting interface is arranged on a side plate of the oil tank; a circle of sealing rubber gasket mounting groove is formed in the side plate along the edge of the mounting interface, the sealing rubber gasket is arranged in the mounting groove and matched with the mounting groove in shape, and the mounting surface of the radiator is tightly attached to the mounting interface; the width of each part of the sealing rubber mat main body is equal, annular mounting holes are formed in the sealing rubber mat main body at equal intervals, the annular width of each mounting hole is half of the width of the sealing rubber mat, the distance between every two adjacent mounting holes is 45-50 mm, and the width d of the sealing rubber mat main body is 8-10 mm; threaded holes corresponding to the positions of the sealing rubber gasket mounting holes are formed in the mounting surfaces of the oil tank side plate and the radiator, and the radiator and the oil tank are locked through a screw and a compression nut; the oil tank is a high-frequency power supply oil tank, and the working frequency of the high-frequency power supply is 20 k-100 k Hz; the sealing rubber pad is made of polyacrylate.
2. The sealing structure between the high-frequency power supply box body and the radiator according to claim 1, wherein the material of the side plate of the high-frequency power supply oil tank is steel.
3. A sealing structure between a high-frequency power supply cabinet and a heat sink according to claim 1, wherein the heat sink is made of aluminum.
4. A sealing structure between a high-frequency power supply cabinet and a heat sink according to claim 1, wherein said mounting hole has a diameter of 6 mm.
5. A sealing structure used between a high-frequency power supply box body and a radiator according to claim 1, characterized in that the thickness of the sealing rubber gasket is 3-6 mm.
6. A sealing structure between a high-frequency power supply cabinet and a radiator according to claim 1, wherein said mounting port on said side plate of said oil tank is rectangular.
7. A sealing structure between a high-frequency power supply cabinet and a heat sink according to claim 1, wherein said sealing rubber gasket is rectangular in shape and has an annular mounting hole at each of four corners thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921402233.9U CN210296090U (en) | 2019-08-27 | 2019-08-27 | Sealing structure used between high-frequency power supply box body and radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921402233.9U CN210296090U (en) | 2019-08-27 | 2019-08-27 | Sealing structure used between high-frequency power supply box body and radiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210296090U true CN210296090U (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921402233.9U Active CN210296090U (en) | 2019-08-27 | 2019-08-27 | Sealing structure used between high-frequency power supply box body and radiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210296090U (en) |
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2019
- 2019-08-27 CN CN201921402233.9U patent/CN210296090U/en active Active
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