Anti-interference underground detection connecting cable

Abstract

The utility model relates to an anti-interference underground detection connecting cable, which belongs to the technical field of cables for electrical equipment, and comprises a cable body and an armored sleeve, the cable body comprises a conductor part, an insulation part and a protection part which are arranged from inside to outside, the conductor part comprises a plurality of interlaced core wires, the inner wall of the insulation part is attached to the outer wall of the conductor part, and the armored sleeve is sleeved on the conductor part. The inner wall of the protection part is attached to the outer wall of the insulation part, the inner wall of the armoring sleeve is attached to the outer wall of the protection part, and the armoring sleeve is made of metal materials. The application has the effect of prolonging the service life of the logging cable.

Description

Technical Field

[0001] The utility model relates to the technical field of cables for electrical equipment, in particular to an anti-interference underground detection connecting cable. Background Art

[0002] Downhole detection connecting cables are referred to as logging cables. Logging cables are used for logging, perforating, coring and other operations in various oil and gas wells. They can also be used in water conservancy and hydrological measurements, coalfield geological exploration, geothermal logging and other aspects. They are connecting cables between ground systems and underground instruments as hanging weight connections and for transmitting measurement data. The logging cable in the prior art includes a conductor layer, an insulating layer and a sheath layer. The conductor layer is the conductive part of the cable, the insulating layer is used to prevent current leakage, and the sheath layer plays a role in mechanical protection and moisture-proofing. However, it is found in actual operation that the logging cable is susceptible to corrosion or breakage due to the external environment during downhole detection, thereby affecting the service life of the logging cable. Utility Model Content

[0003] In order to increase the service life of the logging cable, the present application provides an anti-interference downhole detection connecting cable.

[0004] The present application provides an anti-interference downhole detection connection cable, which adopts the following technical solution:

[0005] An anti-interference downhole detection connection cable includes a cable body and an armored sleeve. The cable body includes a conductor part, an insulation part and a protection part arranged from the inside to the outside. The conductor part includes a plurality of interwoven core wires. The inner wall of the insulation part is in contact with the outer wall of the conductor part, the inner wall of the protection part is in contact with the outer wall of the insulation part, and the inner wall of the armored sleeve is in contact with the outer wall of the protection part. The armored sleeve is made of metal material.

[0006] By adopting the above technical scheme, the cable body includes a conductor part, an insulating part and a protective part arranged from the inside to the outside. The setting of the insulating part provides a certain degree of anti-interference to the cable body, which can ensure the normal use of the downhole detection connecting cable; and the setting of the armored sleeve made of metal material effectively improves the strength of the downhole detection connecting cable, making the downhole detection connecting cable not easy to break during use, thereby extending the service life of the downhole detection connecting cable.

[0007] Preferably, a limiting groove is provided on the end wall of the protective part facing away from the insulating layer, and a limiting block cooperating with the limiting groove is provided on the inner wall of the armor sleeve, and the limiting block cooperates with the limiting groove to limit the rotation of the cable body.

[0008] By adopting the above technical solution, with the cooperation of the limit block and the limit groove, the cable body is not easy to rotate relative to the armor sleeve, reducing the breakage caused by twisting and bending of the cable body, and extending the service life of the downhole detection connection cable.

[0009] Preferably, a plurality of marking rings are provided on the outer wall of the armor sleeve, the plurality of marking rings are evenly spaced, and the distance between any two adjacent marking rings is the same.

[0010] By adopting the above technical solution and setting the marking ring, it is easy to judge the length of the downhole detection connecting cable that penetrates into the ground, which facilitates the use of the downhole detection connecting cable.

[0011] Preferably, the core wire is made of tinned copper, the insulating part is made of fluoroplastic, and the armor sleeve is made of stainless steel.

[0012] By adopting the above technical scheme, since the core wire is made of tin-plated copper, the core wire made of tin-plated copper is relatively soft and has good electrical conductivity. Compared with bare copper wire, it also has better corrosion resistance and oxidation resistance, and the core wire is not easy to turn black and brittle, so that the downhole detection connection cable is not easy to break during use, which greatly extends the service life of the weak current cable; fluoroplastics have excellent insulation properties and can be used in special environments such as high voltage and high frequency without causing current leakage or dielectric breakdown, further extending the service life of the downhole detection connection cable. In addition, fluoroplastics also have certain anti-interference properties, which can ensure the normal use of the downhole detection connection cable; the armored sleeve made of stainless steel has the characteristics of wear resistance, corrosion resistance and tensile resistance, which can extend the service life of the downhole detection connection cable and reduce maintenance costs compared with other metals.

[0013] Preferably, the protective part is made of polypropylene.

[0014] By adopting the above technical solution, polypropylene has good rigidity and hardness, as well as good high temperature resistance and chemical corrosion resistance. During the use of underground detection connecting cables, it is not easy to be damaged or broken due to high temperature.

[0015] Preferably, the protective part is made of polyethylene.

[0016] By adopting the above technical solution, the polyethylene material has good flexibility and ductility, and polyethylene has good cold resistance and is still flexible in low temperature environments. It is not easy to break due to pulling or hanging weight during use, thereby extending the service life of the downhole detection connecting cable.

[0017] Preferably, the thickness of the insulating part is 0.6-0.7 mm, the thickness of the protective part is 4.9-5.0 mm, and the thickness of the armor sleeve is 0.65-0.75 mm.

[0018] By adopting the above technical solution, the thickness of the insulating part, the protective part and the armor sleeve can be controlled without affecting the use effect of the insulating part, the protective part and the armor layer, thereby saving the production cost of the downhole detection connecting cable.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. The cable body includes a conductor part, an insulating part and a protective part arranged from the inside to the outside. The insulating part provides a certain degree of anti-interference to the cable body, which can ensure the normal use of the downhole detection connection cable. The armored sleeve made of metal material effectively improves the strength of the downhole detection connection cable, making it difficult for the downhole detection connection cable to break during use, thereby extending the service life of the downhole detection connection cable.

[0021] 2. With the cooperation of the limit block and the limit groove, the cable body is not easy to rotate relative to the armor sleeve, reducing the breakage caused by twisting and bending of the cable body and extending the service life of the underground detection connection cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of Example 1 of the present application.

[0023] Figure 2 It is a side view of Example 1 of the present application.

[0024] Figure 3 It is a cross-sectional view of Example 2 of the present application.

[0025] Figure 4 It is a side view of Example 2 of the present application.

[0026] Explanation of the reference numerals: 1. cable body; 11. conductor part; 111. core wire; 12. insulation part; 13. protection part; 131. limit groove; 2. armor sleeve; 21. limit block; 22. marking ring; 23. limit protrusion. DETAILED DESCRIPTION

[0027] In order to make the purpose, features, and advantages of the invention of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] The following is combined with Figure 1-4 The utility model is described in further detail.

[0029] Embodiment 1:

[0030] Embodiment 1 of the present application discloses an anti-interference downhole detection connection cable, referring to Figure 1 and Figure 2 , including a cable body 1 and an armor sleeve 2. The cable body 1 includes a conductor part 11, an insulating part 12 and a protective part 13 coaxially arranged from the inside to the outside. The conductor part 11 includes a plurality of interwoven core wires 111. The core wires 111 are made of tinned copper. The core wires 111 made of tinned copper are relatively soft and have good electrical conductivity. Compared with bare copper wires, they also have better corrosion resistance and oxidation resistance. The core wires 111 are not easy to turn black and brittle, so that the downhole detection connecting cable is not easy to break during use, which greatly extends the service life of the weak current cable.

[0031] Reference Figure 1 and Figure 2 The thickness of the insulating part 12 is 0.6-0.7 mm, the inner wall of the insulating part 12 is in contact with the outer wall of the conductor part 11, and the insulating part 12 is made of fluoroplastic material. Fluoroplastic itself is inert and not easy to react chemically with other substances, so it has excellent corrosion resistance and can provide good protection for the conductor part 11; fluoroplastic also has excellent insulation performance and can be used in special environments such as high voltage and high frequency without causing current leakage or dielectric breakdown, further extending the service life of the downhole detection connecting cable. In addition, fluoroplastic also has a certain anti-interference property, which can ensure the normal use of the downhole detection connecting cable.

[0032] Reference Figure 1 and Figure 2 The thickness of the protective part 13 is 4.9-5.0 mm, and the inner wall of the protective part 13 is in contact with the outer wall of the insulating part 12. In the embodiment of the present application, the protective part 13 is made of polypropylene, which has good rigidity and hardness, and good high temperature resistance and chemical corrosion resistance. During the use of the underground detection connecting cable, it is not easy to be damaged or broken due to high temperature.

[0033] Reference Figure 1 and Figure 2 The thickness of the armor sleeve 2 is 0.65-0.75 mm, the inner wall of the armor sleeve 2 is in contact with the outer wall of the protective part 13, and the armor sleeve 2 is made of metal material, which effectively improves the strength of the downhole detection connecting cable, making the downhole detection connecting cable less likely to break during use, thereby extending the service life of the downhole detection connecting cable. In the embodiment of the present application, the armor sleeve 2 is made of stainless steel. The armor sleeve 2 made of stainless steel has the characteristics of wear resistance, corrosion resistance and tensile resistance, which can extend the service life of the downhole detection connecting cable while reducing maintenance costs.

[0034] Reference Figure 1 and Figure 2 A limiting groove 131 is pressed on the end wall of the protective part 13 away from the insulating layer, and a limiting block 21 cooperating with the limiting groove 131 is integrally formed on the inner wall of the armor sleeve 2. With the cooperation of the limiting block 21 and the limiting groove 131, the cable body 1 is not easy to rotate relative to the armor sleeve 2, reducing the breakage caused by the twisting and bending of the cable body 1, and extending the service life of the downhole detection connection cable.

[0035] Reference Figure 1 and Figure 2 A plurality of marking rings 22 are arranged on the outer wall of the armor sleeve 2. The number of marking rings 22 depends on the length of the armor sleeve 2. The plurality of marking rings 22 are arranged evenly and the distance between any two adjacent marking rings 22 is the same. By setting the marking rings 22, it is convenient to judge the length of the underground detection connection cable. In the embodiment of the present application, the marking rings 22 are painted on the armor sleeve 2.

[0036] Embodiment 2:

[0037] The difference from Example 1 is that, referring to Figure 3 and Figure 4 The protective part 13 in the present application is made of polyethylene material. Polyethylene material has good flexibility and ductility, and polyethylene has good cold resistance. It is still flexible in low temperature environment and is not easy to break due to pulling or hanging weight during use, thereby extending the service life of the downhole detection connecting cable.

[0038] Reference Figure 3 and Figure 4 The marking ring 22 in the present application is a rubber ring sleeved on the armor sleeve 2, and limiting protrusions 23 welded and fixed to the armor sleeve 2 are arranged on both sides of the marking ring 22. Through the arrangement of the limiting protrusions 23, the marking ring 22 is not easily displaced relative to the armor sleeve 2, thereby improving the stability of the marking ring 22 arranged on the armor sleeve 2.

Claims

1. An anti-interference downhole detection connecting cable, characterized in that: The invention comprises a cable body (1) and an armor sleeve (2), wherein the cable body (1) comprises a conductor part (11), an insulation part (12) and a protection part (13) arranged from the inside to the outside, the conductor part (11) comprises a plurality of interwoven core wires (111), the inner wall of the insulation part (12) is in contact with the outer wall of the conductor part (11), the inner wall of the protection part (13) is in contact with the outer wall of the insulation part (12), the inner wall of the armor sleeve (2) is in contact with the outer wall of the protection part (13), and the armor sleeve (2) is made of metal material.

2. The anti-interference downhole detection connecting cable according to claim 1, characterized in that: A limiting groove (131) is provided on the end wall of the protection part (13) facing away from the insulating layer, and a limiting block (21) cooperating with the limiting groove (131) is provided on the inner wall of the armor sleeve (2), and the limiting block (21) cooperates with the limiting groove (131) to limit the rotation of the cable body (1).

3. The anti-interference downhole detection connecting cable according to claim 2, characterized in that: A plurality of marking rings (22) are provided on the outer wall of the armor sleeve (2), the plurality of marking rings (22) are arranged at even intervals, and the distance between any two adjacent marking rings (22) is the same.

4. The anti-interference downhole detection connecting cable according to claim 1, characterized in that: The core wire (111) is made of tinned copper, the insulating portion (12) is made of fluoroplastic, and the armor sleeve (2) is made of stainless steel.

5. The anti-interference downhole detection connecting cable according to claim 4, characterized in that: The protection part (13) is made of polypropylene.

6. The anti-interference downhole detection connecting cable according to claim 4, characterized in that: The protective part (13) is made of polyethylene material.

7. The anti-interference downhole detection connecting cable according to claim 4, characterized in that: The thickness of the insulating part (12) is 0.6-0.7 mm, the thickness of the protective part (13) is 4.9-5.0 mm, and the thickness of the armor sleeve (2) is 0.65-0.75 mm.

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