Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
  • H02G3/0616—Joints for connecting tubing to casing
  • H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
  • H02G3/0675—Joints for connecting tubing to casing with means for preventing disengagement of conductors with bolts operating in a direction parallel to the conductors
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
  • H02G3/0616—Joints for connecting tubing to casing
  • H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
  • H02G3/0641—Joints for connecting tubing to casing with means for preventing disengagement of conductors with means distorted around the conductors
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
  • H02G3/0616—Joints for connecting tubing to casing
  • H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
  • H02G3/0666—Joints for connecting tubing to casing with means for preventing disengagement of conductors with means clamping the armour of the conductor

Definitions

• the present invention relates to cable glands which can be used in normal and explosive environments, are made of metal materials such as brass, stainless steel, has pressure balance and EMC properties.
• the invention particularly relates to a pressure balancing gland that can be used in hazardous environments, has pressure balance and EMC properties and has a gas- permeable liquid-tight cartridge.
• the pressure balancing gland is used in many fields in daily life and is contained in the system so as to keep the systems safe.
• This kind of apparatus, performing the task of pressure balancing that occur in the systems in which it is used, is made of different materials according to the property of the field of use.
• parts that are called pressure balancing glands are produced in a manner such that the cable will pass through from one end and the other ends can fit into a screwed assembly, are produced in small sizes, they make the system in which they are used more reliable.
• Pressure balancing glands are made of different materials, particularly brass.
• the pressure balancing glands used in the state of the art have negative conditions such as not being compatible with the requirements of hazardous environmental conditions, lack of EMC performance (Electromagnetic Compatibility), IP (Ingress Protection) problems arising from existing air circulation solutions.
• EMC performance Electromagnetic Compatibility
• IP Ingress Protection
• Said document relates to a ventilation gland, which serves to balance the temperature and pressure in a closed area with the temperature and pressure of the external air and extends the service life of the system by preventing corrosion and water condensation in the closed area.
• Said document is not appropriate for use in hazardous environments in the industrial field, air circulation is only carried out with a membrane and sealing element.
• the invention aims to solve the abovementioned disadvantages by being inspired from the current conditions.
• the main aim of the invention is to provide a pressure balancing gland with a cartridge that is made rigid by coating thermoplastic material on the filter.
• Another aim of the invention is to allow gas/air passage by means of the O-ring profile on the upper and lower sections of the cartridge while providing a healthy sealing protection between the housing and the same, but not to allow the passage of liquid and dust.
• Another aim of the invention is to make the cartridge, which contains filter and carrier cage, to be resistant against deformation due to its durable (rigid) structure. Therefore, continuous gas/air passage through the filter is provided.
• Another aim of the invention is to cover the carrier cage made of thermoplastic elastomer material on the filter by overmold method. Therefore, the disadvantages occur in the methods such as bonding, over-molding, etc. included in the state of the art are eliminated.
• the filter and the carrier cage form the cartridge in a single piece.
• Another aim of the invention is to develop a pressure balancing gland that can be used in hazardous environment applications. Therefore, it is ensured to use a single product for pressure balancing and cable connection in hazardous environment applications.
• Another aim of the invention is to develop a pressure balancing gland with EMC property that can be used in hazardous environment applications.
• the pressure balancing gland provides pressure balancing, cable fixing and EMC properties simultaneously.
• the invention is a pressure balancing gland comprising,
• a filter that allows gas/air passage to balance the pressure and does not allow liquid passage characterized by comprising;
• a cartridge providing connection between O-ring profiles that provide sealing between said filter and said body, and has a carrier cage integrated with said filter.
• Figure 1 is the general and sectional views of the inventive pressure balancing gland.
• Figure 2 is the disassembled view of the inventive pressure balancing gland.
• Figure 3 is the views of the filter and the cartridge.
• Figure 4 is the disassembled view of the inventive pressure balancing gland with EMC property.
• Figure 5 is the general and sectional views of the inventive pressure balancing gland with EMC property. List of Reference Numbers
• the inventive pressure balancing gland comprises the following; a body (10) that protects the internal parts, a sealing element (40) that is placed in the body (10) that provides strain relief and sealing protection by gripping the cable, a cap nut (50) that ensures compression of the sealing element (40), at least one hole (60) that allows the inlet of the external gas/air and outlet of the internal gas/air and a filter (21) that allows gas/air passage to balance the pressure and does not allow liquid passage. Furthermore, it comprises a cartridge (20) that has an integral structure with said filter (21) and has a carrier cage (22) enabling connection between O-ring profiles that provides sealing between the filter (21) and the body (10).
• the carrier cage (22) is made of thermoplastic material.
• the carrier cage (22) is preferably made of thermoplastic elastomer material.
• the carrier cage (22) is covered on the filter (21) by means of the overmold method.
• the carrier cage (22) can be attached on the filter (21) by bonding, welding or other known joining methods.
• the parts of the carrier cage (22) located on the lower and upper sections of the filter (21) function as O-ring profiles. O-ring profiles are connected with feders. Therefore, the filter (21) and the carrier cage (21) form the cartridge (20) by being rigid and integral.
• the upper and lower parts of the cartridge (20) provide sealing protection. While the filter (21) parts allow gas/air passage, they do not allow passage of liquid and dust.
• the filter (21) is preferably made of PTFE material.
• the incoming gas/air is stored and distributed homogeneously on the operating surfaces of the filter (21) by means of the vertical profiles of the carrier cage (22) on the filter (21 ), by means of the gas/air chambers formed between the body (10) and the filter (21).
• the carrier cage (22) is located axially on the filter (21).
• the carrier cage (22) can be worked on the filter (21) in different patterns.
• the cartridge (20) allows gas passage while it is located inside the body (10) but it does not allow liquid, dust passage.
• the gas space (70) allows that the gas entering through the holes (60) is distributed evenly over the filter (21) surface.
• the carrier cage (22) made of thermoplastic elastomer material is coated on the filter (21) with the overmold method and transformed into a cartridge (20).
• the cartridge (20) is assembled by inserting the same into the body (10). Also, cartridge (20) acts as a barrier for ingress protection (IP68 - 0.1 bar) tests.
• the cartridge (20) allows gas/air passage through the filter (21). Although liquid and dust particles enter through the holes (60), they cannot move further to the interior parts of the body (10) by means of the cartridge (20).
• the bushing (30) and the cartridge (20) are fixed in a metal or plastic housing from all directions. The bushing (30) ensures the separation of the sealing element (40) and the cartridge (20) from each other.
• the bushing (30) provides a basis for the operation of the sealing element (40).
• the bushing (30) also protects the cartridge (20).
• the sealing element (40) moves axially by means of the treads of the cap nut (50) and the body (10). Therefore, the sealing element (40) is compressed. Therefore, strain relief and sealing protection are provided.
• FIG 4 there is a pressure balancing gland with EMC property which is a preferred embodiment of the invention.
• a contact spring (90) and a spring bushing (80) are located within the body (10) of the gland with EMC property and contacts the cable shield.
• a rigid environment is created in which the cartridge (20) can be placed by separating the spring bushing (80), the cartridge (20) and the contact spring (90) from each other.
• EMC performance is provided by contacting the contact spring (90) with the cable shield.
• the contact spring (90) and the pressure balancing gland with EMC (Electromagnetic compatibility) property fulfills all functions of pressure balancing, cable connection and EMC feature among hazardous environment applications.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=83545632

Family Applications (1)

Country Status (2)

Family Cites Families (4)

• 2021
  • 2021-04-09 WO PCT/TR2021/050341 patent/WO2022216245A1/en active Application Filing
  • 2021-04-09 EP EP21936187.0A patent/EP4320696A1/de active Pending

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