Mine self-recovery induction cable

Abstract

The invention provides a mine self-recovery induction cable. The mine self-recovery induction cable comprises a first detection line, a protection layer, an elastic supporting piece, a second detection line, a cable supporting piece, a fireproof layer, a protection outer layer and a flexible filling layer. When the cable is extruded or bent, the elastic supporting wing plate on the cable supporting piece plays a role in first-layer buffering, and the elastic supporting piece plays a role in second-layer buffering. A second detection line is installed in the middle of the elastic supporting piece, and when local displacement of the second detection line changes, monitoring signals of the monitoring center will change. On one hand, the cable and the second detection line can be elastically buffered, damage to the cable and the second detection line can be avoided when the cable and the second detection line are slightly extruded and bent, and the positions of the second detection line and the cable can be automatically reset after the cable and the second detection line are extruded through the elastic supporting piece and the elastic supporting wing plate; and the stability of the cable in the use process and the stable transmission of signals are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cables, and in particular relates to a mine self-recovering induction cable. Background Art

[0002] Some coal mining equipment in mines needs to be powered by electricity, so high-voltage cables need to be laid inside the mines for use in the later coal mining process. The internal environment of mines is complex, and the safety of cables during use is particularly important. At present, in order to be able to monitor the operating status of the cable in real time, detection lines are usually installed inside the cables. When the local temperature of the cable is affected or it is squeezed by the outside world, the data can be fed back to the monitoring system in time, so that the operator can find the problem in time for maintenance. However, when the cable is slightly squeezed or bent by the outside world during use, it is easy to cause the detection line to be always in a bent state, affecting the judgment and transmission of the alarm signal, and requiring maintenance personnel to replace and maintain it. The operation is complicated and affects the normal construction on site. Summary of the invention

[0003] The embodiment of the present invention provides a mine self-recovering induction cable, which aims to solve the problem in the prior art that the detection line of the mine cable is difficult to recover after being bent during use, which affects signal transmission and judgment.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a mine self-recovering induction cable, comprising:

[0005] A first detection line, defining a length direction of the first detection line as a first direction;

[0006] A protective layer, which is sleeved on the outer side of the first detection line;

[0007] There are multiple elastic supports, and the multiple elastic supports are evenly spaced and arranged on the outside of the protective layer along the circumference of the protective layer;

[0008] A second detection line is installed in the middle of the elastic support, and the second detection line is arranged in parallel with the first detection line at an interval;

[0009] A cable support, wherein the cable support comprises a plurality of insulating sleeves for installing cables, wherein the plurality of insulating sleeves are respectively against the outer sides of the plurality of elastic support members, and an elastic supporting wing plate is further extended from the outer side of the insulating sleeve;

[0010] A fireproof layer, which is sleeved on the outer side of the cable support, and the elastic support wing plate abuts against the inner wall of the fireproof layer;

[0011] A protective outer layer, which is mounted on the outer side of the fireproof layer and is used to protect the protective layer;

[0012] A flexible filling layer is filled between the fireproof layer and the protective layer.

[0013] In a possible implementation, the cross-section of the elastic support wing plate along a direction perpendicular to the first direction is an arc-shaped structure with the center on the side of the elastic support wing plate close to the first detection line, one end of the elastic support wing plate is arranged tangent to the outer wall of the insulating sleeve, and the other end of the elastic support wing plate rests on the inner wall of the fireproof layer.

[0014] In a possible implementation, an elastic connecting plate is connected between two adjacent insulating sleeves, and the cross-section of the elastic connecting plate along a direction perpendicular to the first direction is a circular arc structure on the side of the elastic connecting plate away from the first detection line, and the two ends of the elastic connecting plate are respectively tangent to the outer side walls of two adjacent insulating sleeves.

[0015] In one possible implementation, the elastic support member includes a protective cover for installing the second detection line, and a first arc-shaped wing plate and a second arc-shaped wing plate are installed on the outer side of the protective cover, the first arc-shaped wing plate abuts against the outer side of the insulating cover, and the second arc-shaped wing plate is installed on the outer side of the protective layer.

[0016] In a possible implementation, a plurality of connecting sleeves are arranged at intervals along a first direction on the outer side of the protective layer, the plurality of connecting sleeves are pivotally mounted on the outer side of the protective layer, and the second arc-shaped wing plate is fixedly mounted on the outer side of the connecting sleeves.

[0017] In a possible implementation, the second arc-shaped wing plates are installed on the outer sides of the plurality of connecting sleeves, and the second arc-shaped wing plates on the plurality of connecting sleeves are arranged at intervals.

[0018] In a possible implementation manner, the protective layer is an elastic steel strip spirally wound around the outside of the first detection line.

[0019] In a possible implementation manner, the elastic support plates on the outer sides of the plurality of insulating sleeves have the same inclination direction along the circumference of the insulating sleeve.

[0020] In a possible implementation manner, the inclination directions of the plurality of first arc-shaped wing plates on the outer sides of the protective sleeve along the circumference of the protective sleeve are the same.

[0021] The scheme shown in the embodiment of the present application, compared with the prior art, is that a first detection line is arranged in the center of the cable, and the first detection line is arranged inside the protective layer. An elastic support is arranged on the outside of the protective layer, and a second detection line is installed in the middle of the elastic support. A cable support is arranged on the outside of the elastic support, and the number of insulating sleeves on the cable support is determined according to the number of cables to be inserted on site. An elastic support wing is also arranged on the outside of the insulating sleeve, and the elastic support wing is against the inner wall of the fireproof layer, and a protective outer layer is also set on the outside of the fireproof layer, which can improve the strength of the cable. At the same time, a flexible filling layer is filled in the gap between the fireproof layer and the protective layer, which can support the cable. In the present application, when the cable is squeezed or bent, the elastic support wing on the cable support plays the role of the first layer of buffering, and the elastic support plays the role of the second layer of buffering. In addition, a second detection line is installed in the middle of the elastic support, and when the second detection line is locally displaced, the monitoring signal of the monitoring center will change. On the one hand, it can play an elastic buffering role for the cable and the second detection line, and can avoid damage to the cable and the second detection line when they are slightly squeezed and bent. Through the elastic support parts and the elastic support wing plates, the positions of the second detection line and the cable can be automatically reset after being squeezed, thereby improving the stability of the cable during use and the stable transmission of signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a mine self-recovery induction cable provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the installation structure of the elastic support member provided in an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the connection structure between the protective layer and the elastic support member provided in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. First detection line; 2. Protective layer; 21. Elastic steel bar; 3. Elastic support member; 31. Protective sleeve; 32. First arc-shaped wing plate; 33. Second arc-shaped wing plate; 4. Second detection line; 5. Cable support member; 51. Insulating sleeve; 52. Elastic support wing plate; 53. Elastic connecting plate; 6. Fireproof layer; 7. Protective outer layer; 8. Flexible filling layer; 9. Connecting sleeve. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Please also read Figures 1 to 3 The mine self-restoring induction cable provided by the present invention is now described. The mine self-restoring induction cable comprises a first detection line 1, a protective layer 2, an elastic support member 3, a second detection line 4, a cable support member 5, a fireproof layer 6, a protective outer layer 7 and a flexible filling layer 8. Define the length direction of the first detection line 1 as the first direction; the protective layer 2 is sleeved on the outside of the first detection line 1; there are multiple elastic support members 3, and the multiple elastic support members 3 are evenly spaced on the outside of the protective layer 2 along the circumference of the protective layer 2; the second detection line 4 is installed in the middle of the elastic support, and the second detection line 4 is spaced and parallel to the first detection line 1; the cable support member 5 includes multiple insulating sleeves 51 for installing cables, and the multiple insulating sleeves 51 are respectively abutted against the outside of the multiple elastic support members 3, and the outer side of the insulating sleeve 51 is also extended with an elastic support wing plate 52; the fireproof layer 6 is sleeved on the outside of the cable support member 5, and the elastic support wing plate 52 abuts on the inner wall of the fireproof layer 6; the protective outer layer 7 is sleeved on the outside of the fireproof layer 6, for protecting the protective layer 2; the flexible filling layer 8 is filled between the fireproof layer 6 and the protective layer 2.

[0029] Compared with the prior art, the mine self-recovering induction cable provided in this embodiment has a first detection line 1 arranged in the center of the cable, and the first detection line 1 is passed through the inside of the protective layer 2. An elastic support member 3 is arranged on the outside of the protective layer 2, and a second detection line 4 is installed in the middle of the elastic support member 3. A cable support member 5 is arranged on the outside of the elastic support, and the number of insulating sleeves 51 on the cable support member 5 is determined according to the number of cables that need to be passed through on site. An elastic support wing plate 52 is also arranged on the outside of the insulating sleeve 51, and the elastic support wing plate 52 is against the inner wall of the fireproof layer 6, and a protective outer layer 7 is also set on the outside of the fireproof layer 6, which can improve the strength of the cable. At the same time, a flexible filling layer 8 is filled in the gap between the fireproof layer 6 and the protective layer 2, which can support the cable. In this application, when the cable is squeezed or bent, the elastic support wing plate 52 on the cable support member 5 plays the role of the first layer of buffering, and the elastic support member 3 plays the role of the second layer of buffering. A second detection line 4 is installed in the middle of the elastic support 3. When the second detection line 4 is partially displaced, the monitoring signal of the monitoring center will change. On the one hand, it can play an elastic buffering role for the cable and the second detection line 4, and can avoid damage to the cable and the second detection line 4 when slightly squeezed and bent. Through the elastic support 3 and the elastic support wing plate 52, the position of the second detection line 4 and the cable can be automatically reset after being squeezed, thereby improving the stability of the cable during use and the stable transmission of the signal.

[0030] Specifically, in this embodiment, the first detection line 1 is a temperature detection line, and the second detection line 4 is a detection line for measuring cable deformation. When the second detection line 4 is deformed, its resistance will change, and the bending state of the cable part is monitored according to the change in resistance value. The structure, material and working principle of the first detection line 1 and the second detection line 4 are all prior arts, belonging to common knowledge in the field, and will not be elaborated here.

[0031] In some embodiments, the elastic support wing plate 52 may be formed as follows: Figure 1 See the structure shown. Figure 1 , the cross section of the elastic support wing plate 52 along the perpendicular direction is an arc-shaped structure with the center on the side of the elastic support wing plate 52 close to the first detection line 1, one end of the elastic support wing plate 52 is tangent to the outer wall of the insulating sleeve 51, and the other end of the elastic support wing plate 52 is against the inner wall of the fireproof layer 6. The elastic support wing plate 52 is a part made of elastic material, and the elastic support wing plate 52 is an arc-shaped structural part. When the cable is squeezed, the elastic support wing plate 52 will bend in the direction close to the first detection line 1. On the one hand, it can prevent the elastic support wing plate 52 from piercing the fireproof layer 6 and the protective outer layer 7 to cause damage to the cable. At the same time, the elastic support wing plate 52 is an arc-shaped structure, and the insulating sleeve 51 can be driven to swing by the elastic support wing plate 52, so as to better transfer the force to the elastic support member 3. It is prevented that the various components are subjected to the force along the radial direction of the protective layer 2, causing damage between the various components.

[0032] In some embodiments, the insulating sleeve 51 may be Figure 1 , Figure 2 See also Figure 1 , Figure 2 , an elastic connecting plate 53 is connected between two adjacent insulating sleeves 51, and the cross section of the elastic connecting plate 53 along the perpendicular direction is a circular arc structure on the side of the elastic connecting plate 53 away from the first detection line 1, and the two ends of the elastic connecting plate 53 are tangent to the outer walls of two adjacent insulating sleeves 51. The two adjacent insulating sleeves 51 are connected by the elastic connecting plate 53, and the multiple insulating sleeves 51 are connected end to end by the elastic connecting plate 53 to form a ring structure. When the cable is bent or squeezed, the elastic supporting wing plate 52 on the squeezed side will push the insulating sleeve 51 to move inward, and the movement of the insulating sleeve 51 will drive the elastic support member 3 to be located, thereby causing the second detection line 4 to be partially displaced. When multiple insulating sleeves 51 are connected together, when a single insulating sleeve 51 is displaced, it will synchronously drive multiple insulating sleeves 51 to be displaced together, so that the displacement of the corresponding multiple second detection lines 4 can be changed, and multiple signal output can be achieved to ensure the accuracy and stability of the alarm signal. The occurrence of false alarms and missed alarms is reduced.

[0033] Specifically, in this embodiment, the elastic connecting plate 53 is an arc-shaped structure, which can automatically guide the elastic connecting plate 53 to bend and deform when two adjacent insulating sleeves 51 are relatively close to each other, thereby preventing the elastic connecting plate 53 from damaging the insulating sleeves 51. At the same time, the provision of the elastic connecting plate 53 can enhance the stability of the relative positions between the multiple insulating sleeves 51.

[0034] In some embodiments, the elastic support member 3 may be Figure 2 See the structure shown. Figure 2 The elastic support member 3 includes a protective sleeve 31 for installing the second detection line 4. The outer side of the protective sleeve 31 is installed with a first arc-shaped wing plate 32 and a second arc-shaped wing plate 33. The first arc-shaped wing plate 32 abuts against the outer side of the insulating sleeve 51, and the second arc-shaped wing plate 33 is installed on the outer side of the protective layer 2. The first arc-shaped wing plate 32 and the second arc-shaped wing plate 33 are fixedly connected to the outer side of the protective sleeve 31. The first arc-shaped wing plate 32 and the second arc-shaped wing plate 33 are both made of elastic materials. Through the arrangement of the first arc-shaped wing plate 32 and the second arc-shaped wing plate 33, on the one hand, the displacement stroke of the protective sleeve 31 can be increased, and the safety of the second detection line 4 can be effectively protected. At the same time, the arrangement of the first arc-shaped wing plate 32 and the second arc-shaped wing plate 33 can guide the moving direction of the protective sleeve 31, and can guide multiple protective sleeves 31 to move obliquely in the same direction around the cable, so as to make full use of the space inside the cable.

[0035] Preferably, in this embodiment, along the circumferential direction of the protective layer 2 , the first arc-shaped wing plate 32 and the second arc-shaped wing plate 33 extend from the protective sleeve 31 to the outside in opposite directions.

[0036] Preferably, in this embodiment, the second arc-shaped wing plate 33 is fixedly connected to the outer side of the protective layer 2 , so as to locate the relative position between the cable support member 5 and the elastic support member 3 .

[0037] In some embodiments, the protective layer 2 may be formed as follows: Figure 2 , Figure 3 See also Figure 2 , Figure 3 , multiple connecting sleeves 9 are arranged at intervals along the first direction on the outside of the protective layer 2, and the multiple connecting sleeves 9 are pivotally mounted on the outside of the protective layer 2, and the second arc-shaped wing plate 33 is fixedly mounted on the outside of the connecting sleeve 9. Multiple connecting sleeves 9 are installed on the outside of the protective layer 2, and the multiple connecting sleeves 9 are arranged at intervals. A protective layer 2 is installed on the outside of the connecting sleeve 9, and the protective layer 2 is pivotally connected to the connecting sleeve 9. When the cable is bent, the relative position of the protective layer 2 and the connecting sleeve 9 can be changed through the pivotal relationship between the protective layer 2 and the connecting sleeve 9, so that the connection position of the protective layer 2 and the connecting sleeve 9 is buffered. Thereby, the service life of the cable is improved.

[0038] Specifically, in this embodiment, a spherical surface is provided on the outer side of the protective layer 2, and a spherical groove corresponding to the spherical surface is provided on the inner wall of the connecting sleeve 9, so that the connecting sleeve 9 can swing freely on the protective layer 2, and the connecting sleeve 9 can swing freely during the pipe bending process. When the cable is straightened, the axis of the connecting sleeve 9 can be made to coincide with the axis of the protective layer 2, so that the cable can be restored to its original state.

[0039] In some embodiments, the connecting sleeve 9 can be used as follows Figure 3 See the structure shown. Figure 3 , the outer sides of the plurality of connection sleeves 9 are all installed with second arc-shaped wing plates 33, and the second arc-shaped wing plates 33 on the plurality of connection sleeves 9 are arranged at intervals. The second arc-shaped wing plates 33 are fixedly installed on the outer sides of the connection sleeves 9, and two adjacent second arc-shaped wing plates 33 are arranged at intervals along the first direction. Therefore, when the cable is bent, the second arc-shaped wing plates 33 are given enough swinging space. When the axial angle between two adjacent connection sleeves 9 changes, the second detection line 4 can be driven to bend, so that the monitoring signal of the monitoring center changes, and the on-site maintenance personnel are reminded to correct the bending part. By pivoting the connection sleeve 9 to the outer side of the protective layer 2, the state of the second detection line 4 can be corrected, which is convenient for later maintenance.

[0040] In some embodiments, the first detection line 1 may be used as follows: Figure 3 See the structure shown. Figure 3 The protective layer 2 is an elastic steel bar 21 spirally wound on the outside of the first detection line 1. The first detection line 1 is a temperature-sensitive detection line, and the protective layer 2 is spirally wound on the outside of the first detection line 1. The pitch of the elastic steel bar 21 is greater than the width of the elastic steel bar 21, so that part of the first detection line 1 is exposed to the outside. When the temperature of the internal cable is too high, the temperature of the cable can be sensed in time, so that the monitoring center can monitor it in time.

[0041] Specifically, in this embodiment, the protective layer 2 is spirally wound on the outside of the first detection line 1. When the cable is pulled, the elastic steel strip 21 becomes longer with the pulling of the cable, so as not to affect the use of the first detection line 1, and provide a certain elastic pulling amount. When the cable is restored, the position of the protective layer 2 can be restored. This prevents the first detection line 1 from being broken and affecting the subsequent use. It can play a certain role in protecting the position of the first detection line 1 and the connecting sleeve 9.

[0042] In some embodiments, the elastic support plate may be Figure 1 , Figure 2 See also Figure 1 , Figure 2The elastic support plates outside the multiple insulating sleeves 51 are inclined in the same direction along the circumference of the insulating sleeve 51. The multiple elastic support plates are all inclined and extended in the same direction. When squeezed by the outside, the multiple insulating sleeves 51 can be inclined in the same direction, thereby avoiding the elastic connecting plate 53 from being broken due to inclination in different directions. The stability during use is improved to avoid cutting off and maintenance later.

[0043] In some embodiments, the protective sleeve 31 may be Figure 1 , Figure 2 See also Figure 1 , Figure 2 , the first arc-shaped wing plates 32 on the outside of multiple protective sleeves 31 have the same inclination direction along the circumference of the protective sleeve 31. The first arc-shaped wing plates 32 on the outside of multiple protective sleeves 31 extend obliquely in the same direction, and the pressing direction of the first arc-shaped wing plates 32 is the same as the extension direction of the elastic support plate. When squeezed by the outside, the insulating sleeve 51 and the protective sleeve 31 swing in the same direction, thereby playing a double buffering role for the cable. The cable can be fed to avoid damage caused by squeezing. At the same time, the first arc-shaped wing plate 32 has the same force as the elastic support plate, which can effectively push the protective sleeve 31 to swing, so that the elastic support plate on the outside of the protective sleeve 31 effectively fits on the inner wall of the fireproof layer 6.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mine self-recovering induction cable, characterized in that: include: A first detection line (1), wherein the length direction of the first detection line (1) is defined as a first direction; A protective layer (2) is mounted on the outer side of the first detection line (1); A plurality of elastic support members (3), wherein the plurality of elastic support members (3) are evenly spaced and arranged on the outer side of the protective layer (2) along the circumference of the protective layer (2); A second detection line (4) is installed in the middle of the elastic support, and the second detection line (4) is arranged in parallel with the first detection line (1) at an interval; A cable support member (5), the cable support member (5) comprising a plurality of insulating sleeves (51) for mounting cables, the plurality of insulating sleeves (51) respectively abutting against the outer sides of the plurality of elastic support members (3), and an elastic supporting wing plate (52) extending from the outer side of the insulating sleeve (51); A fireproof layer (6) is sleeved on the outer side of the cable support member (5), and the elastic support wing plate (52) abuts against the inner wall of the fireproof layer (6); A protective outer layer, which is mounted on the outer side of the fireproof layer (6) and is used to protect the protective layer (2); A flexible filling layer (8) is filled between the fireproof layer (6) and the protective layer (2).

2. The mine self-recovering induction cable according to claim 1, characterized in that: The cross section of the elastic support wing plate (52) along a direction perpendicular to the first direction is an arc-shaped structure with the center at the side of the elastic support wing plate (52) close to the first detection line (1), one end of the elastic support wing plate (52) is tangent to the outer wall of the insulating sleeve (51), and the other end of the elastic support wing plate (52) is against the inner wall of the fireproof layer (6).

3. The mine self-recovering induction cable according to claim 2, characterized in that: An elastic connecting plate (53) is connected between two adjacent insulating sleeves (51); the cross section of the elastic connecting plate (53) along a direction perpendicular to the first direction is a circular arc structure on the side of the elastic connecting plate (53) away from the first detection line (1); and the two ends of the elastic connecting plate (53) are respectively tangent to the outer side walls of the two adjacent insulating sleeves (51).

4. The mine self-recovering induction cable according to claim 1, characterized in that: The elastic support member (3) comprises a protective sleeve (31) for mounting the second detection line (4), and a first arc-shaped wing plate (32) and a second arc-shaped wing plate (33) are mounted on the outer side of the protective sleeve (31), wherein the first arc-shaped wing plate (32) abuts against the outer side of the insulating sleeve (51), and the second arc-shaped wing plate (33) is mounted on the outer side of the protective layer (2).

5. The mine self-recovering induction cable according to claim 4, characterized in that: A plurality of connecting sleeves (9) are arranged at intervals along a first direction on the outer side of the protective layer (2); the plurality of connecting sleeves (9) are pivotally mounted on the outer side of the protective layer (2); and the second arc-shaped wing plate (33) is fixedly mounted on the outer side of the connecting sleeve (9).

6. The mine self-restoring induction cable according to claim 5, characterized in that: The second arc-shaped wing plates (33) are installed on the outer sides of the plurality of connecting sleeves (9), and the second arc-shaped wing plates (33) on the plurality of connecting sleeves (9) are arranged at intervals.

7. The mine self-restoring induction cable according to claim 6, characterized in that: The protective layer (2) is an elastic steel strip (21) spirally wound around the outside of the first detection line (1).

8. The mine self-restoring induction cable according to claim 2, characterized in that: The elastic support plates on the outside of the plurality of insulating sleeves (51) have the same inclination direction along the circumference of the insulating sleeve (51).

9. The mine self-restoring induction cable according to claim 4, characterized in that: The first arc-shaped wing plates (32) on the outer sides of the plurality of protective sleeves (31) have the same inclination direction along the circumference of the protective sleeve (31).

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