The protection device rf connectors and fittings cables in the connector from the external operating factors

 

(57) Abstract:

The invention relates to antenna-feeder path and is designed to protect the RF connector, consisting of a socket and plug, and sealing cables in the socket and the plug. The device consists of a protective tube, the fixing brackets of the safety sleeve and the device mounting to the support. The protective tube has a Central section, two arcuate curved section and the open end of the site. In the Central section of the protective tube are the RF connector and termination, and the ends inserted through one of the safety tube. Installation of the protective tube on the support is performed so that both its open end is directed downward to the Earth's surface. The technical result - increasing the effectiveness of protection from exposure to wind loads and moisture without sealing device. 4 C.p. f-crystals, 6 ill.

The invention relates to antenna-feeder path and can be used in radio equipment, radio systems, operated out of the premises.

The level of technology.

Under the connector means a device designed for connection of cables with each other. Connect the CLASS="ptx2">

You know, the first device to protect connectors and fittings electrical cables in the connectors from the external operating factors [Weatherproof cover for electrical cable connector, U. S. Patent 3792415, Feb. 12, 1974, Alvin W. Fuller, Shelton, Conn.], consisting of two separate caps. One of the caps set on the socket, the other on the plug. Each of the caps consists of a body and two ferrules. The first grommet cap covers the cable sheath, the second sleeve is used for connection with another cap. Caps are installed on the cable before it will be terminated cables in the connector. After connecting the plug and socket caps fixed to the plug and outlet and connected to each other. At the junction formed by the junction of the two caps.

The first known device has the disadvantage that because of the looseness of fit of the sealing sleeve to the cable jacket, the gap at the coupling caps, the roughness of the contact surfaces of structural elements leaking protection connector and fittings cables in the connector. With temperature fluctuations in the protected volume absorbed humid the air, the way the I connector moisture interferes with the normal operation of the connector. Capillary action also occur due to the presence of microscopic gaps in the field of coverage cap of the cable sheath and joint capsules, promotes the penetration of moisture from the outer side of the protective device inside, which also leads to the accumulation of water inside the protective device. Penetrating into the protected volume of the air bearing mold spores, contributes, together with other factors (darkness, humidity, heat, draught-free) development of moulds. This protective device is poorly protects the connector from mechanical influences such as vibration and shock, as it has no structural elements rigidly fixing the position of the cables and connector. The device is made of polymer materials, which are themselves vulnerable to the impact of the external operating factors, such as humidity, solar radiation can significantly reduce the service life of the device. The necessity of putting caps on the cables to termination in the connector narrows the scope of the first known device. For cables that are already embedded in the connector, the use of this device is difficult.

You know the second condition is operational factors representing the heat-shrinkable tube made by the method of radiation modification of tube TEP DMG 7.975.015 TU [heat-shrinkable Tube RD 107.460007.100-92 (restriction DMG 7.975.016 TU) industry guidance document, group 27, the date of introduction 01.10.93]. Protection of this unit RF connector at the expense of sealing. Tightness is created by thermal shrinkage tube with a dense coverage of the connector and shells adjacent portions of the cables.

A second known device eliminates the drawbacks of the first known device, due to the fact that the first known device consists of two separate parts. However, the surface roughness of the cable insulation or the presence of scratches on it lead to loss of tightness. In the inside of the protective tube penetrates the moisture in the form of water vapor absorbed with temperature fluctuations and changes in atmospheric pressure. Water from the external surface of the protective device penetrates inside the protected volume due to the capillary effect. Inside the water cannot evaporate or transpire and therefore accumulates. The life of the device is limited by the material from which it is adicheskie properties. Another disadvantage of the second known device is that it requires installation of special equipment in the form of a heating Cabinet. The necessity of heating the tube to install up to one hundred forty degrees Celsius for five minutes narrows the scope of application of the device. Eliminates the possibility of protecting the device RF connectors and cables, incorporating elements of fusible material (melting point below 140oC), for example, of polyethylene. The device is intended for single use. Disassembly of the shielded connector is impossible without destruction of the protective tube.

Known third device that protects the RF connector and termination in the connector from the influence of external operational impacts Cold Shrink [3M Cold Shrink Weatherproofing kits, Andrew Corporation Catalog 1999] containing plastic protective tube, with mechanical memory. The tightness of the protective device is provided due to the shrinkage of the protective tube and cover of the connector and the nearest parts of the cables. Known third device eliminates the disadvantages of the second known device, due to the need to ushitsa, if the inner surface of the protective tube or the surface of the cable jacket are deviations from the ideal form. Fluctuating temperatures promote the absorption of interior water vapor, then condensing on the inner wall of the tube, the connector cables. In the gaps resulting from non-ideal adhesion surfaces, penetration of moisture into the protected volume due to the capillary effect. The accumulation of water occurs because of the difficulty of evaporation of condensate in a limited space, and also due to the lack of other effective ways to remove moisture. The polymeric material from which the protective tube is made, himself influenced by operational impacts, which are protected connector and termination in a connector, such as temperature, humidity, solar radiation, leading to premature aging and loss of necessary physical and mechanical properties. Device Cold Shrink does not allow multiple connection and disconnections of the protected RF connector. The third known device is a single-use device. Device Cold Shrink selected by the authors as a prototype from the or other devices requires connection via RF connectors, there is a problem of protection connector and fittings cables in the connector from the destabilizing impact of the external operating factors.

One of the most severe climate impacts is the impact of high humidity. Moisture getting on the connector, accelerates the corrosion processes of his body especially in the presence of impurities in the atmosphere. The formation of a film of moisture on insulation materials leads to rapid ionization of the film, to increase surface conductivity. These phenomena provoke a breakdown due to surface effect. In addition, the film of water contributes to the capacitive effect due to the high value of the dielectric constant of water. Moisture absorption dielectric materials also leads to the deterioration of a number of their mechanical parameters.

The largest share of damage to the connectors from the biological environment have on fungal. Fungal education in the process of life produce metabolic products, which mainly consist of organic acids that cause corrosion of metal and the ical oxidation of such common materials as polyethylene and polystyrene. Solar radiation leads to a significant change in internal structure of the molecules of the dielectric. Education for polyethylene and polystyrene cross-linking causes internal stresses and increases its fragility. Ultraviolet radiation activates the surface of the metal, affecting the rate of atmospheric corrosion.

Dust, due to the hygroscopicity of some of the particles contributes to corrosion degrades the electrical connector settings, contributes to the development of moulds.

Shocks can lead to fatigue changes in the design of the connector or to mechanical disturbances. The vibration causes the connectors mechanical resonance and dangerous stresses in structural elements, which can lead to violations of the electrical contact and the change of contact resistance.

Protection connector and fittings of cables from the external service factors can be made by means of sealing. The lack of such protection is the accumulation of the protected device moisture, which occurs because of the difficulties in ensuring a high degree of sealing joints of powerto it is made in the form of a curved arc of the protective tube, having a downstream open ends, in which are inserted the first and second relief bushing, protect the cable from abrasion and protect the wireless connection is located in the center of the tube, and the fixing of cables and connector using the first and second fixing brackets located on the left and right ends of the protective tube, respectively. The first and second fixing brackets each, consists of a large clamp designed for attachment to the protective tube, small clamp that secures the position of the cable and the rod connecting the large and small clamps, while the protective tube is a device for fixation of the whole structure. The internal dimensions of the protective tube such that through it freely passes the RF connector Assembly, and is sufficient to protect the distance from located in the center of the tube connector to the ends of the tube.

The opaque wall of the protective tube, made of metal, protects the elements of the connector from the effects of solar radiation. The arcuate shape of the protective tube prevents the protected device from wind loads. Due to the special form and the cash is and and also by natural ventilation. The presence of draught in the tube prevents the development of fungi. The curved shape and orientation of the protective tube ends down toward the Earth, prevent the ingress protected connector of precipitation and water spray. Provides mechanical protection connector using secure its position. Contribute to the strength and rigidity of the material of the protective tube. The device allows multiple articulation and dismemberment shielded connector.

List of figures.

In Fig. 1 depicts in accordance with the present invention, the protection device RF connectors and fittings cables in the connector from the external operating factors; in the protection device is placed RF connector, which terminated cables.

In Fig. 2 depicts the protective tube of the present invention.

In Fig. 3 shows the locking bracket.

In Fig. 4 shows the protective sleeve.

In Fig. 5 shows one of the two protective sleeves mounted in the right end of the protective tube.

In Fig. 6 connector and termination, connecting the antenna to the transmitter.

5. Information confirming the possibility of carrying out the invention.

The protection device RF connectors and fittings cables in the connector from the external operating factors (Fig. 1) consists of the protective tube 1, the first and second fixing brackets 2, the first and second protective sleeves 3 and device 4 mounting protection tube to the support (support not shown). In the center of the protective tube is a RF connector 5 and sealed him in the ends of the cables 6.

Protective tube 1 (Fig. 2) has a Central section 7, first and second arcuate curved sections 8, the ends 9. The Central section 7 of the protective tube 1 for a more comfortable position in her RF connector 5 is made in the form of a cylinder. The inner diameter of the protective tube 1 is greater than the larger diameter of the connector 5. The first and second curved sections 8 are the left and right of the Central section 7, respectively. They have a sufficient radius of curvature to pass inside of the protective tube 1 connector, 5 and 6 cables. The ends 9 of the protection tube 1 to allow the punching of its ends with ustanovki 1 (Fig. 3) are inserted and fixed by punching one of the safety sleeve 3.

Protective sleeve 3 (Fig. 4) has the shape of a hollow cylinder which has a serving restrictive circular step 10 and groove 11 to provide the best conditions for fixing the sleeve by means of punching. To facilitate the passage through the sleeve 3 of the connector 5 and 6 cables edges of the inner surface of the protective sleeve are fillets 12.

Fixing bracket 2 (Fig. 5) includes a yoke 13, a small clamp 14 and connecting the clamp rod 15. Great clip 13 of the fixing bracket 2 is made in the form of a broken ring 16, having a place to break the sponge 17, held together with a screw 18 to tighten the large clamp. Small clamp 14 of the clamping bracket 2 consists of a support ring 19 having a sponge 20 with the screw hole and the sponge 21, and the clamping ring 22 having a hook 24, tazapsidis when assembling small clamp for the sponge 21 of the support ring 19, and the sponge 23 with the hole for the screw 25. The small delay of the clip 14 is carried out by means of a screw 25. Rod 15, one end connects to the middle of the open ring 16 large clamp, and dragunow tube 1 by means of large clamps 13, which are tightened on each end of the protective tube.

Device 4 (Fig. 1) mounting the tube to a support made in the form welded to the middle of the protective tube 1 mounting petal. The Assembly is made so that both ends of the protective tube 1 would be sent down to the surface of the Earth.

To reduce the effect of external operational factors on the protective device of its elements are made of resistant materials and have a protective coating. Protective tube 1 and the mounting lug 4 is made of the same metal: steel, copper, brass or other, and have a protective coating or a metal coating: enamel PF-115, Nickel, chromium or other Fixing brackets 2 metal (steel, copper, brass or other) have paint or metal protective coating. Protective sleeve 3 is made of light-stabilized polyethylene.

Installation of protective devices is performed in the following order. Understand small clamps 14. The end of the cable 6, terminates in a plug, is inserted together with her in one end of the protective tube 1, is inserted through it thoroughly. Then plug RF connector articulates with the socket, in which is sealed kozedelny outlet, then he connects with a fork, in which the sealed end of the other cable. Then, the connector 5 is drawn into the protective tube 1 so that it was in the center of the tube. Protruding from the protective tube, the ends of the cables are covered with small clamps 14 of the fixing bracket 2, then small clamps 14 are tightened.

The device operates as follows. The opaque wall of the protective tube 1, made of metal, protects the elements of the connector from the effects of solar radiation. The arcuate shape of the protective tube prevents the protected device from wind loads. Due to the curved and the open ends of the tubes facing the surface of the Earth, the moisture is removed from the protected space, emerging under the influence of gravity, as well as through natural ventilation. The presence of draught in the tube prevents the development of fungi. The curved shape and orientation of the protective tube ends down to prevent the penetration of the protected connector of precipitation and water spray. Mechanical protection connector is secured using secure its position. Contribute to the strength and rigidity of the material used for the protection of the setting on the mast 27 using a clamp 28. The device 29 protection of RF connectors and termination in the connector from the external operating factors attached to the mast 27 by means of a bracket 30. The end of the cable from the antenna 31 is connected with the feeder 32 with an RF connector that is inside the protection device 29. The feeder 32 is attached to the mast 27 clamps 33.

When using the proposed device to protect the RF connector, consisting of a socket CF-75-P and fork SR-75-P, and fittings cable RK-75-9-13 in the socket and plug in the length of the Central section 7 of the protective tube 1 is equal to 36 mm, the Radii of curvature of the sections 8 of the protective tube 1 is equal to 85 mm, the bending angle 60o. The inner diameter of the protective tube 1 is equal to 28 mm, inner diameter of the protective sleeve 3 is equal to 24 mm Internal size small clamp 14 of the clamping bracket 2 is equal to 12 mm

1. The protection device RF connectors and fittings cables in the connector from the external operating factors containing the protective tube and the device for fixing the position of the RF connector and cable relative to the protective tube, characterized in that it further comprises at and sent down to the Earth's surface, and the RF connector and termination in the connector is placed in the Central section of the protective tube.

2. The device under item 1, characterized in that the device for fixing the position of the RF connector and cable relative to the protective tube made in the form of first and second fixing brackets fixed on the respective ends of the protective tube.

3. The device according to p. 2, wherein each of the fixing brackets consists of large and small clamps, connected by a rod, and the large clamps brackets secured to the respective ends of the protective tube, and small clamps brackets cover protruding from the protective tube, the ends of the cables.

4. The device according to p. 3, characterized in that the device for mounting a protective tube to a support made in the form of a petal.

5. The device according to p. 4, characterized in that it further comprises first and second protective sleeves that are inserted into the respective ends of the protective tube.

 

Same patents:

The invention relates to electric power

Cable clutch // 2025855
The invention relates to a cable technique and can be used in the construction and operation of lines of cables with plastic sheath and insulation lived, including in hazardous environment

The invention relates to electrical engineering, namely to the cable coupling for connecting the ends of high-voltage and low-voltage cables with metal and plastic shells

The invention relates to a sealed shields cable splices and has a body made therein shaped hole

The invention relates to electrical engineering and relates to submersible oil-filled motors of submersible pumps used in the petroleum industry for oil production

The invention relates to the field of electrical engineering and is intended for use in vehicles, particularly cars

The invention relates to electrical connectors, particularly for telephone communication equipment, and more particularly, to shielded from the environment modular electrical connections

The invention relates to a device for connecting first and second parts of the underwater connector to provide electrical, hydraulic, air, optical, or other communications

The invention relates to electrical engineering and can be used in the connection of electrical circuits, particularly high-current electrical circuits

The invention relates to the connection of electrical appliances and can be used in the electrical industry

FIELD: plug connectors for cables of subsurface workings of mines.

SUBSTANCE: proposed cable-terminating plug forms hollow plug socket of brass whose hollow section on cable end forms cable entry hole and has supporting collar that functions to support male connecting member projection in axial direction. Cable entry hole is provided with inner thread for turning in metal tetrahedron that has through hole for cable entry. Cable screen or armor can be placed between through hole and cable sheath to ensure adequate grounding of cable and cable plug. Inner space of plug socket is sealed by means of shaped part molded on cable sheath, on plug socket, and on polyhedron. Shaped part is also used for securing cable in axial direction on plug socket.

EFFECT: ability of long-time service in damp media due to reliable sealing attained by simple means.

13 cl, 3 dwg

FIELD: cable jointing devices.

SUBSTANCE: cable jointing box provided with through duct to receive respective cable end mounts cup-shaped electric contact whose edge forms hold-down ring tightly enclosing reduced-diameter box section. Naked conducting member is placed between electric contact and box section. Hold-down ring is squeezed to tighten up joint between duct wall and cable sheath. Tightening sleeve is capable of holding two boxes, each being connected to cable through respective electric contacts. Sleeve provides for tight joint between interrelated cable parts in region bounded by sleeve and boxes.

EFFECT: enhanced quality of wire-to-cable joint.

8 cl, 10 dwg

FIELD: electrical engineering; drilling and servicing inclined and horizontal oil-gas wells.

SUBSTANCE: proposed cable connector specially designed to prevent ingress of conducting medium (drilling mud) into its interior thereby ensuring reliable insulation of contacts from environment and preventing electric current leakage (leakage resistance being minimum 50 - 100 Megohms), or poor contact between connector mating parts has pin section and jack section with contact members inside them, as well as membrane. Jack section is made in the form of cylindrical shroud with stepped inner space accommodating contacts made in the form of flexible split rings secured on flexible cross-arms, flexible membrane disposed at pin section joint, and spring-loaded sealing ring mounted within shroud for displacement. Inner space of jack section is filled with insulating liquid. Cylindrical pin section has conical end; diameter of pin cylindrical part is larger than inner diameter of sealing ring.

EFFECT: enhanced tightness and reliability of contact between mating parts of connector.

1 cl, 4 dwg

FIELD: electrical engineering.

SUBSTANCE: proposed junction module has independent connecting member inserted in jacks which are connected to modular members incorporated in operating and protective equipment of transformer substations and power distribution systems. Each connecting member has external flexible shroud accommodating conducting ring wherein plurality of conducting parts are installed and passed through ring channels. Mentioned conducting parts are assembled in bundle for its axial displacement and turning in ring which makes it possible to wire and connect them to respective contact leads provided in jacks and related to each of adjacent members.

EFFECT: eliminated leakage of protective gas during junction due to reliable sealing and insulation of joint.

6 cl, 7 dwg

Up!