Thermocouple-compensated cable

Abstract

The application belongs to the technical field of compensation cable, and particularly relates to a thermocouple compensation cable, which comprises a compensation cable body, two wire terminals fixedly connected to the wire harness end of the compensation cable body, an adapter fixedly connected to the other wire harness end of the compensation cable body, and a detachably connected electric connector on the adapter. The compensation cable body is composed of a core, a braided tape, an acid and alkali resistant layer and a high-temperature resistant sheath from inside to outside, so that corrosion of the cable caused by acidic and alkaline liquids is prevented. In the application, a reinforcing steel core is arranged at the center of the core to strengthen the compression resistance and tear resistance of the compensation cable body, so that the cable is prevented from being easily broken under compression or tension. Even if the cable is accidentally damaged, the thickness of the position of the outer channel on the reinforcing steel core is small due to the setting of the outer channel, so the outer channel closest to the damaged position can be selected and cut off, the waste of the whole compensation cable body is avoided, and environmental protection is promoted.

Description

Technical Field

[0001] This invention relates to a compensating cable, specifically a thermocouple compensating cable. Background Technology

[0002] Cables are devices used to transmit electrical energy and signals. Compensating cables extend multi-point thermocouples and move the cold junction of thermocouples, connecting with display instruments to form a multi-point temperature measurement system. Compensating cables use imported high-quality fluoroplastics for both insulation and sheathing, employing a new continuous extrusion process. This gives the product excellent resistance to acids and alkalis, abrasion resistance, and non-flammability, allowing for long-term immersion in oil and water. The operating temperature range of compensating cables is 60–260°C, representing a contemporary international advanced level. Thermocouple compensating cables are suitable for multi-point connections of automated temperature measuring instruments in industries such as power, metallurgy, petroleum, chemical, and textile, as well as in defense and scientific research.

[0003] There are many types of thermocouple compensation cables on the market, but they still have some drawbacks: such as insufficient stability when transmitting electrical energy, easy external damage when dragged, inconvenient construction and maintenance, and poor cable connection, which cannot meet the requirements for long-term use. Summary of the Invention

[0004] The main objective of this disclosure is to provide a thermocouple compensation cable to effectively solve the problems raised by the inventors in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A thermocouple compensation cable includes a compensation cable body, with two terminals fixedly connected to the wire harness end of the compensation cable body and an adapter fixedly connected to the other wire harness end. An electrical connector is detachably connected to the adapter. The compensation cable body is composed of a conductor core, a braided strip, an acid and alkali resistant layer, and a high-temperature resistant sheath from the inside out.

[0006] Preferably, after the conductor core is manufactured into a cable, it is wrapped with a braided tape. The outer side of the braided tape is wrapped with an acid and alkali resistant layer with a thickness of 0.3mm to prevent the cable from being corroded by acidic and alkaline liquids. The outer wall of the acid and alkali resistant layer is extruded with a high-temperature resistant sheath, which has flame-retardant and high-temperature resistant properties.

[0007] Preferably, the conductor core comprises a reinforcing steel core, copper conductors, an aluminum shielding layer, and a wrapping layer. The reinforcing steel core and several copper conductors are fixed inside the aluminum shielding layer to prevent the cable from being interfered with by signals. Each copper conductor is arranged in a circular array with the axis of the reinforcing steel core as the center. The outer wall of each copper conductor is covered with an insulating layer and then fixed to the inner wall of the aluminum shielding layer. A wrapping layer is extruded on the outer side of the aluminum shielding layer and is connected to a braided tape. A filler layer is provided between the reinforcing steel core and each copper conductor.

[0008] Preferably, the outer side of the reinforcing steel core is fixedly connected with elastic strips arranged in a ring array, and the reinforcing steel core is located at the center of the compensating cable body, with each elastic strip in contact with the insulation layer on the outer side of each copper conductor.

[0009] Preferably, the reinforcing steel core is a hollow ring structure with an outer groove on its outer ring. The depth of the outer groove is four-fifths of the ring width diameter of the reinforcing steel core.

[0010] Preferably, the adapter is a threaded connector, and the end of the compensating cable body away from the terminal is integrally extruded and formed with a locking connector. The outer wall of the locking connector has an external thread and is screwed into the threaded connector. The threaded head of the electrical connector is connected to the other end of the threaded connector.

[0011] Preferably, the outer wall of the threaded tubing is fixedly connected with a perforated welding plate.

[0012] Preferably, one of the terminals is a nickel-silicon terminal and the other is a nickel-chromium terminal, which together form a complete cable harness to ensure signal transmission.

[0013] Preferably, the acid and alkali resistant layer is made of a high molecular ceramic polymer material, and the aluminum shielding layer is made of aluminum foil.

[0014] In view of this, compared with the prior art, the beneficial effects of the present invention are: (i) In this application, the compensating cable and the terminal block are connected by crimping and then welding to ensure the reliability of the connection. The terminal block is then connected to other devices to realize signal transmission, which solves the defect of unreliable wiring. Furthermore, the electrical connector is connected to the compensating cable through an adapter, which reduces the stress at the connection point of the conductor core and thus ensures that the conductor core is not easily damaged or broken, making it more practical.

[0015] (ii) In this application, a reinforcing steel core is installed at the center of the conductor core to enhance the compressive and tear resistance of the cable body, thereby preventing the cable from easily breaking under pressure or tension. Even if the cable is accidentally damaged, due to the setting of the external recess, the thickness of the external recess on the reinforcing steel core is small. At this time, the external recess closest to the damaged area can be selected and cut off, avoiding the waste of the entire compensating cable body and promoting environmental protection. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic diagram of the thermocouple compensation cable structure provided by the present invention. Figure 2 The diagram shown is a cross-sectional view of the connection between the locking connector and the compensating cable body. Figure 3The figure shown is a cross-sectional view of the adapter. Figure 4 The diagram shown is a schematic representation of the internal structure of the compensation cable body. Figure 5 The image shown is a cross-sectional view of the conductor core. Figure 6 The image shown is a 3D view of the reinforced steel core. Figure 7 The image shown is a cross-sectional view of the reinforced steel core.

[0017] icon: 1-Compensating cable body; 1a-Conductor core; 101-Reinforcing steel core; 102-Copper conductor; 1b-Braided tape; 1c-Acid and alkali resistant layer; 1d-High temperature resistant sheath; 2-Insulation layer; 3-Aluminum shielding layer; 4-Wrapping tape layer; 5-Filling layer; 6-Elastic strip; 7-External recess; 8-Adapter; 9-Electrical connector; 10-Terminal; 11-Locking joint; 12-External thread; 13-Welding plate with holes. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-7 The present invention provides the following embodiments: A thermocouple compensation cable includes a compensation cable body 1. Two terminals 10 are fixedly connected to the wire harness end of the compensation cable body 1, and an adapter 8 is fixedly connected to the other wire harness end. An electrical connector 9 is detachably connected to the adapter 8. The compensation cable body 1 is composed of a conductor core 1a, a braided tape 1b, an acid and alkali resistant layer 1c, and a high-temperature resistant sheath 1d from the inside out. After the conductor core 1a is manufactured into a cable, it is wrapped with a braided tape 1b. An acid and alkali resistant layer 1c with a thickness of 0.3mm is wrapped around the outside of the braided tape 1b. A high-temperature resistant sheath 1d is extruded on the outer wall of the acid and alkali resistant layer 1c, which has flame-retardant and high-temperature resistant properties. One terminal 10 is a nickel-silicon terminal, and the other terminal 10 is a nickel-chromium terminal. The two together form a complete cable harness to ensure signal transmission.

[0020] Specifically, the conductor core 1a comprises a reinforcing steel core 101, copper conductors 102, an aluminum shielding layer 3, and a wrapping layer 4. The reinforcing steel core 101 and several copper conductors 102 are fixed inside the aluminum shielding layer 3, and each copper conductor 102 is arranged in a ring array with the axis of the reinforcing steel core 101 as the center. The outer wall of each copper conductor 102 is covered with an insulation layer 2, which is then fixed to the inner wall of the aluminum shielding layer 3. The outer side of the aluminum shielding layer 3 is covered with a wrapping layer 4, and the wrapping layer 4 is connected to the braided tape 1b. A filling layer 5 is provided between the reinforcing steel core 101 and each copper conductor 102. Elastic strips 6 arranged in a ring array are fixedly connected to the outer side of the reinforcing steel core 101, and the reinforcing steel core 101 is located at the center of the compensating cable body 1. Each elastic strip 6 is in contact with the insulation layer 2 on the outer side of each copper conductor 102. The acid and alkali resistant layer 1c is made of high molecular ceramic polymer material, and the aluminum shielding layer 3 is made of aluminum foil.

[0021] Specifically, the reinforcing steel core 101 is a hollow ring structure with an outer recessed channel 7 on its outer ring. The depth of the outer recessed channel 7 is four-fifths of the ring width diameter of the reinforcing steel core 101, thereby reducing the thickness at the outer recessed channel 7.

[0022] Specifically, the adapter 8 is a threaded connector tube. The end of the compensating cable body 1 away from the terminal 10 is integrally extruded and formed with a locking connector 11. The outer wall of the locking connector 11 has an external thread 12, which is screwed into the threaded connector tube. The threaded head of the electrical connector 9 is connected to the other end of the threaded connector tube. The outer wall of the threaded connector tube is fixedly connected with a perforated welding plate 13, which makes the connection between the cable and the electrical connector 9 more secure and ensures the accurate docking of the conductor core 1a. The perforated welding plate 13 can fix the adapter 8 to prevent the compensating cable body 1 from falling off after connection and causing poor contact.

[0023] The specific implementation method of this embodiment is as follows: the compensation cable and the terminal block 10 are connected by crimping and then welding to ensure the reliability of the connection between the two. The terminal block 10 is then connected to other devices to realize signal transmission, which solves the defect of unreliable wiring. The electrical connector 9 is connected to the compensation cable through the adapter 8, so that the connection of the conductor core 1a is less stressed, thereby ensuring that the conductor core 1a is not easily damaged or broken, which is more practical. A reinforcing steel core 101 is installed at the center of the conductor core 1a to enhance the compressive and tear resistance of the compensation cable body 1, thereby preventing the cable from easily breaking under pressure or tension. Even if the cable is accidentally damaged, due to the setting of the external recess 7, the thickness of the external recess 7 on the reinforcing steel core 101 is relatively small. At this time, the external recess 7 closest to the damaged area can be selected and cut off, avoiding the waste of the entire compensation cable body 1 and promoting environmental protection.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A thermocouple compensation cable, characterized in that: The cable includes a compensating cable body (1), with two terminals (10) fixedly connected to the wire harness end of the compensating cable body (1) and an adapter (8) fixedly connected to the other wire harness end. An electrical connector (9) is detachably connected to the adapter (8). The compensating cable body (1) is composed of a conductor core (1a), a braided strip (1b), an acid and alkali resistant layer (1c), and a high-temperature resistant sheath (1d) from the inside out. The conductor core (1a) is specifically composed of a reinforcing steel core (101), copper conductors (102), an aluminum shielding layer (3), and a wrapping layer (4). The reinforcing steel core (101) and several copper conductors (102) are fixed inside the aluminum shielding layer (3), and each copper conductor (102) is arranged in a ring array with the axis of the reinforcing steel core (101) as the center. The outer wall of each copper conductor (102) is covered with an insulating layer (2) and then fixed to the inner wall of the aluminum shielding layer (3). The outer side of the aluminum shielding layer (3) is covered with a wrapping layer (4), and the outer side of the wrapping layer (4) is covered with a braided tape (1b). A filling layer (5) is provided between the reinforcing steel core (101) and each copper conductor (102). The outer side of the reinforcing steel core (101) is fixedly connected with elastic strips (6) arranged in a ring array, and the reinforcing steel core (101) is located at the center of the compensating cable body (1). Each elastic strip (6) is in contact with the insulation layer (2) on the outer side of each copper conductor (102). The reinforcing steel core (101) is a hollow ring structure with an outer groove (7) on its outer ring. The depth of the outer groove (7) is four-fifths of the radial thickness of the ring wall of the reinforcing steel core (101). The adapter (8) is a threaded connector tube. The end of the compensation cable body (1) away from the terminal (10) is integrally extruded and formed with a locking connector (11). The outer wall of the locking connector (11) is provided with an external thread (12) and screwed into the threaded connector tube. The threaded head on the electrical connector (9) is connected to the other end of the threaded connector tube. The outer wall of the threaded tubing is fixedly connected to a perforated welding plate (13).

2. The thermocouple compensation cable according to claim 1, characterized in that: After the conductor (1a) is manufactured into a cable, it is wrapped with a braided tape (1b). The outer side of the braided tape (1b) is wrapped with an acid and alkali resistant layer (1c) with a thickness of 0.3mm. The outer wall of the acid and alkali resistant layer (1c) is extruded with a high-temperature resistant sheath (1d), which has flame retardant and high-temperature resistant properties.

3. A thermocouple compensation cable according to claim 1, characterized in that: One of the terminals (10) is a nickel-silicon terminal, and the other terminal (10) is a nickel-chromium terminal. Together, they form a complete cable harness to ensure signal transmission.

4. A thermocouple compensation cable according to claim 1, characterized in that: The acid and alkali resistant layer (1c) is made of high molecular ceramic polymer material, and the aluminum shielding layer (3) is made of aluminum foil paper.

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