Cable stuffing box

Abstract

The cable stuffing box (2) has a body (4) for receiving a portion of a cable (18) extending through the cable stuffing box, where the body (4) comprises an inlet member (6) and a second body portion (10) adapted to be mounted to the inlet member (6). A barrier tube (20) is located at least partially within the body (4) and a seal (58) sealingly engages the cable (18) and the barrier tube (20) to prevent pressure loss and / or flame transmission through the seal (58) and defines a space for receiving a curable liquid material to prevent adhesion of the curable liquid material to an inner surface of the inlet member (6).

Description

Technical Field

[0001] The present invention relates to cable glands, and more particularly to cable glands that can be easily selected between non-barrier and barrier operating modes. Background Art

[0002] Cable glands are used to connect cables to enclosures and are generally of two types, non-barrier or barrier. In both types of cable glands, the cable passes through a gland body consisting of two separate body parts that are threaded to each other so as to clamp the cable in place in the gland body. In the case of a cable having a metallic armor layer, a clamping device comprising a frustoconical clamping body and a clamping ring can clamp the armor layer between the clamping body and the clamping ring.

[0003] In non-barrier type cable glands, the sealing contact between the cable gland body and the cable passing through the cable gland is achieved by at least one flexible seal extending between the inner cable jacket and the cable gland body. However, the sealing effect of such flexible seals is usually only applicable to the outer cable jacket and / or inner jacket; this means that they are only suitable for use in explosive atmospheres if the cable internal structure is strong enough to withstand the effects of an explosion and is able to prevent the propagation of flames and / or explosive gases through it (usually between the gaps around the inner conductors or cable core). If the cable cannot be protected against this, then according to the current installation standards / specifications, barrier type cable glands should be used in explosive atmospheres, where additional sealing is required directly around the inner conductors or cable core.

[0004] One of the design goals of barrier type cable glands is to prevent explosions from causing flames to spread through the cable gland along the cable. The gap between the inner sheath or inner conductor of the cable and the cable gland body is sealed by a curable resin material injected into the cable gland body. A flexible material barrier is usually provided between the inner sheath of the cable and the cable gland body to prevent the uncured resin material from moving too far along the cable before curing, thereby enabling the use of a highly fluid resin material, which in turn improves the quality of the barrier effect formed by reducing the possibility of air gaps in the cured resin material.

[0005] Known cable glands have the disadvantage that they are either non-barrier type or barrier type, thus requiring a large number of both types of cable glands to be stocked, even though both types of cable glands generally have many common components. Another disadvantage of known cable glands is that if a user accidentally purchases a non-barrier type cable gland, or finds that the non-barrier type cable gland is unsuitable, converting the non-barrier type cable gland to a barrier type cable gland requires removing the seal of the non-barrier type and installing a barrier tube and a resin barrier, wherein the resin barrier joins the cable to the barrier tube.

[0006] Another disadvantage of known non-barrier cable glands is that the flexible seals generally do not have sufficient mechanical strength.

[0007] Another disadvantage of existing cable glands is that the retaining ring may be lost or installed incorrectly.

[0008] Embodiments of the present disclosure attempt to overcome one or more of the above-mentioned disadvantages. Summary of the invention

[0009] One aspect of the present invention provides a cable gland as claimed in claim 1.

[0010] By providing a barrier device adapted to be at least partially located within the first body portion, a first sealing device adapted to sealingly engage the cable and the barrier device, wherein the barrier device and the first sealing device define a space for receiving a curable liquid material so that the barrier device can prevent the curable liquid material from adhering to the inner surface of the first body portion, and a sealing support device adapted to engage the first sealing device and resist pressure applied to the first sealing device from the space, wherein the sealing support device defines a hole to enable the cable to engage with the first sealing device from the side of the first sealing device opposite to the space, this provides the advantage of being able to remove the first body portion from the second body portion after the liquid material is cured, which in turn enables the barrier formed by the cured liquid material to be inspected, thereby improving the reliability of the cable gland. At the same time, the cable gland can be easily converted from a non-barrier type to a barrier type without removing any parts from the cable gland or replacing any internal components, thereby reducing the number of parts that need to be stored, because the first sealing device is the same regardless of whether the cable gland is a barrier type or a non-barrier type, and the barrier device is present, while in the case of a non-barrier type cable gland, the barrier device is redundant.

[0011] The barrier arrangement may include at least one hollow member for defining an annular path along an inner surface of the first body portion.

[0012] By providing at least one hollow member mounted to the body and defining an annular path along the inner surface of the body, a flame path in the form of an annular path along the inner surface of the body is provided for a barrier type cable gland, thereby enabling the cable gland to be easily converted between barrier type and non-barrier type.

[0013] At least one of the hollow members may be at least partially transparent.

[0014] This provides the advantage that by removing one of the first or second body parts the quality of the barrier formed by the curable barrier material between the hollow member and the cable extending through the cable gland can be checked.

[0015] At least one of the hollow members may be metallic.

[0016] This provides the advantage that in the event of an explosion a flame passing along the annular path is quickly extinguished.At least one of the hollow members may be an elastomer.

[0017] The barrier arrangement may comprise a first said hollow member and a second said hollow member, wherein the second hollow member is adapted to abut the first hollow member to restrict access to an inner surface of the barrier arrangement.

[0018] This offers the advantage that in the event of an explosion the annular path is the easiest entry path for the flame, thereby increasing the reliability of the cable gland.

[0019] The first hollow member may have an insert portion, wherein the insert portion is adapted to be located within the bore of the second hollow member.

[0020] This offers the advantage of more effectively preventing gas or flames from entering the interior of the second hollow member in the event of an explosion.

[0021] At least one of the hollow members may include an end portion, wherein the end portion is adapted to engage with the aperture defined by the first body portion, and the end portion has a greater rigidity than a portion of the hollow member adjacent the end portion.

[0022] This provides the advantage of minimizing deformation of the flexible hollow member as a result of filling and / or curing of the curable liquid material.

[0023] The seal support device may include a base portion adapted to be fixed relative to the first body portion and a tapered portion extending from the base portion and defining the aperture. The tapered portion may include a plurality of support members pivotally mounted to the base portion and adapted to engage the cable and support the first seal device, wherein at least one of the support members has a corresponding engagement surface for engaging another of the support members adjacent thereto due to the pivoting of the support member relative to the base portion toward the longitudinal axis of the tapered portion, so that the support member and the other support member engage with each other and slide relative to each other.

[0024] By providing a tapered portion, wherein the tapered portion includes a plurality of support members pivotally mounted to the base and adapted to engage the cable and support a seal engaged with the cable, at least one of the support members having a corresponding engagement surface, the engagement surface being used to engage another of the support members adjacent thereto due to the support member pivoting relative to the base toward the longitudinal axis of the tapered portion, so that the support member and the other support member engage with each other and slide relative to each other, this provides the advantage of increasing the strength of the sealing support against explosions, thereby enabling the seal to be used in both barrier type and non-barrier type cable glands.

[0025] The support member and the other support member may be engaged with each other along a surface inclined with respect to an axial plane of the tapered portion.

[0026] The base portion may be adapted to engage an outer peripheral portion of the first sealing device such that the base portion and the outer peripheral portion are clamped between the first body portion and an inner clamping portion of the clamping device for clamping an armour layer of a cable.

[0027] This offers the advantage of making the cable gland more compact.

[0028] The cable gland may further comprise an indicator device, wherein the indicator device is adapted to be mounted on the body to indicate whether solidified liquid material is present in the space. The indicator device may be adapted to be fixed in position on the body by mounting the first body portion to the second body portion.

[0029] Another aspect of the present invention provides a sealing support as claimed in claim 14 .

[0030] By providing a tapered portion, wherein the tapered portion includes a plurality of support members pivotally mounted to the base and adapted to engage the cable and support a seal engaged with the cable, at least one of the support members having a corresponding engagement surface, the engagement surface being used to engage another of the support members adjacent thereto due to the support member pivoting relative to the base toward the longitudinal axis of the tapered portion, so that the support member and the other support member engage with each other and slide relative to each other, which provides the advantage of increasing the strength of the sealing support against explosions.

[0031] The support member and the other support member may be engaged with each other along a surface inclined with respect to an axial plane of the tapered portion.

[0032] Another aspect of the present invention provides a sealing device for a cable gland, the sealing device comprising a sealing support as described above and a sealing member for engaging a cable extending through the cable gland.

[0033] Another aspect of the present invention provides a cable gland, comprising: a body for receiving a portion of a cable extending through the cable gland, wherein the body comprises a first body portion and a second body portion adapted to be mounted to the first body portion; and a sealing device as described above.

[0034] Another aspect of the present invention provides a cable gland as claimed in claim 18. By providing a retaining device adapted to elastically engage the inner surface of the second body portion and elastically deformed by the insertion of the external clamping portion into the second body portion, so that the external clamping portion can be mounted on the retaining device and can be releasably retained in the second body portion, this provides the advantage that the external clamping portion can clamp the armor layer of the cable by mounting the second body portion on the first body portion, and then removing the second body portion from the first body portion, so that the clamping effect of the armor layer between the internal and external clamping portions can be checked. A further advantage is that by releasably retaining the external clamping portion in the second body portion by means of the retaining device, the risk of losing the external clamping portion is reduced.

[0035] The retaining device may comprise at least one first retaining portion, and the outer clamping portion may comprise at least one protrusion, wherein at least one first retaining portion is elastically displaceable to enable at least one said protrusion to pass through said deformable portion.

[0036] At least one of the first retaining portions may be adapted to engage at least one recess of the outer clamping portion to releasably retain the outer clamping portion in the second body portion.

[0037] At least one of the first retaining portions may comprise at least one respective inclined surface adapted to engage the outer clamping portion and to be resiliently displaced by insertion of the outer clamping portion into the second body portion.

[0038] The retaining means may comprise at least one second retaining portion adapted to engage the inner surface of the second body portion, and the retaining means may be deformable to enable at least one second retaining portion to be disengaged from the inner surface of the second body portion. The retaining means may comprise a discontinuous ring made of an elastic material. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Embodiments of the present disclosure will now be described by way of example only and not in any limiting sense with reference to the accompanying drawings, in which:

[0040] Figure 1 is an exploded perspective view of a cable gland of the first embodiment;

[0041] Figure 2 yes Figure 1 Side cross-section view of the cable gland before installation on the cable;

[0042] Figure 3 yes Figure 2 Side cross-sectional view of the cable gland after installation onto the cable in non-barrier mode;

[0043] Figure 4 yes Figure 2 Side cross-sectional view of the cable gland after installation on the cable and in barrier mode;

[0044] Figure 5 yes Figure 1 An exploded perspective view of the stuffing box body, fixing clips and armor clamping ring of the cable stuffing box;

[0045] Figure 6 yes Figure 5 A partially cutaway perspective view of the middle stuffing box body, the fixing clip and the armor clamping ring in the assembled state;

[0046] Fig. 6A For Figure 6 The corresponding exploded perspective view;

[0047] Figure 7 yes Figure 1 A perspective view of a support member for a flexible seal of a cable gland;

[0048] Figure 8 yes Figure 7 a side view of the middle support member;

[0049] Fig. 9 yes Figure 7an end view of the middle support member in an uncompressed state;

[0050] Fig.10 yes Figure 7 an end view of the support member in a compressed state;

[0051] Fig.11 Shows Figure 1 An assembled cable gland with a marking ring indicating that the cable gland is a barrier type;

[0052] Fig.12 is an exploded perspective view of a cable gland of a second embodiment;

[0053] Fig.13 yes Fig.12 Side cross-section view of the cable gland before installation on the cable;

[0054] Fig.14 yes Fig.12 A side cross-sectional view of the cable gland after installation onto the cable in non-barrier mode; and

[0055] Fig.15 yes Fig.12 Side cutaway view of the cable gland after installation on the cable and in barrier mode. DETAILED DESCRIPTION

[0056] refer to Figures 1 to 4 The cable gland 2 of the first embodiment has a body 4, wherein the body 4 is formed by a first body portion and a second body portion 10. The first body portion is in the form of an inlet component 6, which is adapted to be installed into a hole in a closure component (not shown) via a first threaded surface 8. The second body portion 10 has a second threaded surface 12, which can be engaged with a third threaded surface 14 on the inlet component 6, so that the inlet component 6 and the second body portion 10 can be mounted to each other to define a cable 18 to be installed in the closure component. Figure 3 ] a portion of the chamber 16 ( Figure 2 The second thread surface 12 and the third thread surface 14 have threads with a larger pitch than, for example, the first thread surface 8, so that the inlet component 6 and the second body portion 10 can be quickly mounted to each other.

[0057] A barrier device in the form of a first hollow member is provided in the inlet part 6, the first hollow member comprising a metal barrier tube 20 and a second hollow member in the form of a transparent tube 22 made of plastic or elastomeric material. The transparent tube 22 has an insert portion in the form of a protrusion 24 which is received in an end 26 of the bore of the barrier tube 20 so that a flange 28 of the transparent tube 22 can abut against the end 26 of the barrier tube 20 to prevent gas or flames from entering the barrier tube 20 in the event of an explosion.

[0058] The clamping device in the form of an inner clamping part 30 comprises a clamping body 32 and a fixed compensating armor cone 34, and an armor clamping ring 36, wherein the inner clamping part clamps the armor layer 38 of the cable 18 between the fixed compensating armor cone 34 and the armor clamping ring 36. The armor cone 34 has a radially inwardly deflectable portion 40, which is used to be able to clamp the armor layer 38 having a certain thickness range. Figure 5 , Figure 6 and Fig. 6A As shown more clearly, the armor clamping ring 36 is releasably fixed in the second body part 10 by a retaining device; the retaining device is a non-closed annular fixing buckle 42 made of elastic material (such as metal or plastic), which includes a first retaining portion in the form of an inclined section 50 and a second retaining portion in the form of a retaining section 46. The fixing buckle 42 can be deformed radially inwardly so that the buckle 42 can be located on the inner surface 44 of the second body part 10, thereby expanding the buckle 42, thereby making the retaining section 46 of the buckle 42 firmly clamped in the groove 48 on the inner surface 44 of the second body part 10. As the armor clamping ring 36 is inserted into the second body part 10, the inclined section 50 can be deformed radially outwardly to allow the protrusion in the form of a ridge 52 on the end of the armor clamping ring 36 to pass over the inclined section 50, thereby releasably retaining the clamping ring 36 in the second body part 10.

[0059] like Figure 2 As more clearly shown, when the second body portion 10 is fully mounted to the inlet member 6, the clamping ring 36 is retained between the abutment surface 54 on the second body portion 10 and the abutment surface 56 on the clamping body 32. The first sealing means in the form of a frustoconical silicone diaphragm seal 58 and the sealing support means in the form of a diaphragm sleeve 60 are clamped between the abutment surface 62 on the clamping body 32 and the annular surface 64 on the barrier tube 20. The diaphragm sleeve 60 defines a hole 70 for receiving the cable 18 and has a generally cylindrical base 72 ( Figure 7) and a tapered portion 74 formed by a plurality of support members in the form of interlocking fingers 76 having an engagement surface in the form of a flat portion 78 for resisting forces that would deflect the fingers 76 radially inward. Due to the pivoting of the fingers 76 relative to the base 72, the fingers 76 can easily move radially outward but provide resistance to radial inward movement. The base 72 of the diaphragm sleeve 60 engages with a peripheral portion of the diaphragm seal 58, as shown. Figure 2 As more clearly shown, when the cable gland 2 is assembled and the second body portion 10 is fully mounted on the inlet component 6, the peripheral portion of the diaphragm seal 58 and the base 72 of the diaphragm sleeve 60 are clamped between the barrier tube 20 and the clamping body 32, and the barrier tube 20 abuts the flange 28 of the transparent tube 22. The diaphragm seal 58 has an aperture 66 that seals to the outer surface of the inner jacket 68 of the cable 18. When used in the non-barrier mode, the seal 58 can prevent pressure loss and / or the passage of flames along the cable 18 in the event of an explosion.

[0060] like Figures 7 to 10 As shown more clearly, the flat portions 78 of the fingers 76 are arranged so that the flat portions 78 of adjacent fingers 76 engage with each other along a surface inclined relative to the axial plane of the tapered portion 74, so that when the fingers 76 are pivoted relative to the base 72 toward the longitudinal axis of the tapered portion 74, the adjacent fingers 76 engage with each other and slide relatively. It is also possible to provide fingers 76 without the flat portions 78, i.e., fingers 76 with smooth edges and no interlocking.

[0061] A marker ring 80 for indicating that the cable gland 2 operates as a barrier type may be mounted on an outer surface 82 of the second body portion 10. A silicone outer seal 84 is clamped between an end face 86 of the second body portion 10 and a ferrule 88 located in a bore of an outer nut 90. The outer nut 90 is mounted to the second body portion 10 by mating threaded surfaces 92, 94, thereby axially compressing the outer seal 82, which causes the outer seal 82 to expand radially inwardly to seal against the outer jacket 96 of the cable 18. The outer nut 90 is now described. Figures 1 to 11 The operation of the cable gland 2 is shown in FIG.

[0062] The assembled cable gland 2 is initially Figure 2The outer nut 90 is loosely located on the second body portion 10, so that the outer nut 90 is loosely held on the second body portion 10, and the second body portion 10 is separated from the inlet component 6. The outer jacket 96, the armor layer 38 and the inner jacket 68 of the cable 18 are partially removed from the cable 18 to provide Figure 3 The cable 18 shown in FIG. 1 is inserted into the diaphragm seal 58 and the end of the cable 18 is pushed through the hole 66 of the diaphragm seal 58 in a right-to-left direction, as shown in FIG. Figure 3 As shown, the diaphragm seal 58 is sealed to the outer surface of the inner jacket 68 of the cable 18. The seal 58 is generally strong enough to prevent the explosion from propagating along the cable 18 to the atmosphere outside the cable gland 2, and to stop the explosion at the outer peripheral portion of the seal 58, where the seal 58 engages with the inner surface of the barrier tube 20. The end of the armor layer 38 of the cable 18 is located between the clamping ring 36 and the compensating armor cone 34, and then the second body part 10 is tightly mounted on the entry component 6 to tightly clamp the armor layer 38. When the second body part 10 is tightly mounted on the entry component 6, the clamping ring 36 is stretched on the armor layer 38, so that the clamping ring 36 is permanently retained on the clamped armor layer 38. This makes it possible to inspect the armour termination by removing the second body part 10 from the inlet component 6 , as the clamping ring 36 can be slid over the catch 42 after the removal operation to release the clamping ring 36 from the second body part 10 .

[0063] The outer nut 90 is then mounted on the second body portion 10 to provide a Figure 3 The arrangement shown is to be used as a non-barrier type cable gland 2.

[0064] The inner surfaces of the barrier tube 20 and the transparent tube 22 and the outer surface of the diaphragm seal 58 define a space 102 (eg, Figure 4 ), the space is located between the end 104 of the inlet member 6 and the diaphragm seal 58. In the event of an explosion, the pressure applied to the seal 58 from the space 102 is borne by the diaphragm sleeve 60. Although the above-mentioned non-barrier type cable gland 2 prevents the explosion from propagating through the cable gland 2 around the inner and outer peripheries of the seal 58, it cannot prevent the explosion from propagating between the inner conductors 100 of the cable 18, for example, when there is a sufficiently large gap between the inner conductors 100 of the cable 18. In order to prevent the explosion from propagating along the inner conductors 100, it is necessary to use a barrier type cable gland 2.

[0065] refer to Figure 4In order to provide the barrier type cable gland 2, a distributor device (not shown) distributes the curable resin material 98 to the Figure 3 The space 102 between the inner surface of the transparent tube 22 of the cable gland 2 and the inner conductor 100 of the cable 18 is filled with the curable resin material 98. The diaphragm seal 58 prevents the curable liquid material 98 from moving too far along the cable 18, so that a high-flow material 98 can be used, which reduces the possibility of air gaps in the cured resin material. The barrier tube 20 and the transparent tube 22 prevent the resin material from adhering to the inner surface of the inlet component 6, so that the inlet component 6 can be easily removed from the second body part 10 after the resin material is cured. This makes it possible to inspect the cured resin material through the transparent tube 22 by removing the inlet component 6 from the second body part 10.

[0066] If an explosion occurs in the enclosure, if any explosion products, such as gas and / or flame, enter the cable gland 2 (from the cable gland 22) between the outer surface of the transparent tube 22 and the inner surface of the inlet member 6, Figure 4 The transparent tube 22 is classified as a flame path or a part of a flame path, i.e., the minimum length and maximum gap or spacing between the outer surface of the transparent tube 22 and the inner surface of the inlet component 6 are within the specified range of the current standards / specifications, and the flame will be quickly extinguished.

[0067] If the transparent tube 22 is not part of the flame path or is not part of the flame path, in the event of an explosion in the enclosure, if any explosion products, such as gases and / or flames, enter the cable gland 2 between the outer surface of the transparent tube 22 and the inner surface of the inlet member 6 (from the Figure 4 As shown from the left side, the transparent tube 22 is pushed into closer abutment with the barrier tube 20 so that any flame will pass between the outer surface of the barrier tube 20 and the inner surface of the inlet member 6 where it will be quickly extinguished. The only other path available to the flame and other explosion products is along the inner conductor 100 of the cable 18, and this only path is now blocked by the cured resin material surrounding the inner conductor 100. In this case, since the seal 58 is used to prevent the flowable material 98 from moving too far out of the cable 18 before curing, the seal 58 becomes redundant because the cured resin material also serves to prevent the flame or other explosion products from propagating through the cable gland 2.

[0068] refer to Figures 12 to 15 , shows a cable gland 202 of a second embodiment, wherein Figures 1 to 11 Like components of the present embodiment are denoted by like reference numerals, but increased by 200.

[0069] The mutual joint portion of the metal barrier tube 220 and the transparent tube 222 is larger than the radial direction. Figures 1 to 11 The transparent tube 222 is thicker in the embodiment of the present invention so as to more effectively prevent gas or flame from entering the barrier tube 220 in the event of an explosion. In addition, the transparent tube 222 is provided with an end in the form of a support tube 205, which can be detachably or non-detachably attached to the end of the transparent tube 222 to engage the hole 207 in the end of the inlet member 206. The support tube 205 has a greater rigidity than the rest of the transparent tube 222, so in the case of using a flexible transparent tube 222, deformation of the transparent tube 222 is minimized during filling of the curable liquid material and curing of the material.

[0070] Those skilled in the art will appreciate that the above embodiments are described by way of example only and are not limiting in any sense, and that various changes and modifications may be made without departing from the scope of the present disclosure as defined in the appended claims.

Claims

1. A cable stuffing box, characterized in that: include: a body for receiving a portion of a cable extending through the cable gland, wherein the body comprises a first body portion and a second body portion adapted to be mounted to the first body portion; a barrier device adapted to be located at least partially within the first body portion; a first sealing device adapted to sealingly engage the cable and the barrier device, wherein the barrier device and the first sealing device define a space for receiving a curable liquid material, such that the barrier device prevents the curable liquid material from adhering to an inner surface of the first body portion; and a seal support device adapted to engage the first seal device and resist pressure applied to the first seal device from the space, wherein the seal support device defines an aperture for enabling the cable to engage the first seal device from a side of the first seal device opposite the space.

2. The cable gland according to claim 1, characterized in that: The barrier device includes at least one hollow member for defining an annular path along the inner surface of the first body portion.

3. The cable gland according to claim 2, characterized in that: At least a portion of at least one of the hollow members is at least partially transparent.

4. The cable gland according to claim 2 or 3, characterized in that: At least a portion of at least one of the hollow members is metallic.

5. The cable gland according to any one of claims 2 to 4, characterized in that: The barrier device comprises a first hollow member and a second hollow member, wherein the second hollow member is adapted to abut the first hollow member to restrict access to an inner surface of the barrier device.

6. The cable gland according to claim 5, characterized in that: The first hollow member has an insert portion, wherein the insert portion is adapted to be located within the bore of the second hollow member.

7. The cable gland according to any one of claims 2 to 6, characterized in that: At least one of the hollow members includes an end portion, wherein the end portion is adapted to engage an aperture defined by the first body portion and has a greater rigidity than a portion of the hollow member adjacent the end portion.

8. The cable gland according to any one of the preceding claims, characterized in that The seal support device includes a base portion adapted to be fixed relative to the first body portion and a tapered portion extending from the base portion and defining the aperture.

9. The cable gland according to claim 8, characterized in that: The tapered portion includes a plurality of support members pivotally mounted to the base and adapted to engage the cable and support the first sealing device, wherein at least one of the support members has a corresponding engagement surface for engaging another support member adjacent thereto due to the support member pivoting relative to the base toward the longitudinal axis of the tapered portion, so that the support member and the other support member engage with each other and slide relative to each other.

10. The cable gland according to claim 9, characterized in that: The support member and the other support member engage with each other along surfaces inclined relative to an axial plane of the tapered portion.

11. The cable gland according to any one of claims 8 to 10, characterized in that: The base portion is adapted to engage an outer peripheral portion of the first sealing device such that the base portion and the outer peripheral portion are clamped between the first body portion and an inner clamping portion of a clamping device for clamping the armor layer of the cable.

12. A cable gland according to any one of the preceding claims, characterised in that An indication device is also included, wherein the indication device is suitable for being mounted on the body to indicate whether there is solidified liquid material in the space.

13. The cable gland according to claim 12, characterized in that: The indicator device is adapted to be fixed in position on the body due to the first body portion being mounted to the second body portion.

14. A seal support for supporting a seal in a cable gland, characterized in that: The seal support defines a hole for receiving a portion of a cable extending through the cable gland, and includes: a base adapted to be mounted to the body of the cable gland; and a tapered portion, wherein the tapered portion includes a plurality of support members pivotally mounted to the base and adapted to engage the cable and support a seal engaged with the cable, wherein at least one of the support members has a corresponding engagement surface for engaging another support member adjacent to the support member due to the support member pivoting relative to the base toward the longitudinal axis of the tapered portion, so that the support member and the other support member engage with each other and slide relative to each other.

15. The seal support according to claim 14, characterized in that The support member and the other support member engage with each other along surfaces inclined relative to an axial plane of the tapered portion.

16. A sealing device for a cable stuffing box, characterized in that: The sealing arrangement comprises a seal support and a seal according to claim 14 or 15, wherein the seal is for engaging a cable extending through a cable gland.

17. A cable stuffing box, characterized in that: include: a body for receiving a portion of a cable extending through the cable gland, wherein the body comprises a first body portion and a second body portion adapted to be mounted to the first body portion; And a sealing device according to claim 16.

18. A cable stuffing box, characterized in that: include: a body for receiving a portion of a cable extending through the cable gland, wherein the body comprises a first body portion and a second body portion adapted to be mounted to the first body portion; A clamping device, comprising an inner clamping portion and an outer clamping portion, wherein the clamping device is used to clamp the armor layer of the cable between the inner clamping portion and the outer clamping portion, and a retaining device, which is used to releasably retain the outer clamping portion in the second body portion, wherein the retaining device is suitable for elastically engaging the inner surface of the second body portion and being elastically deformed due to the insertion of the outer clamping portion into the second body portion, so that the outer clamping portion can be releasably mounted on the retaining device and releasably retained in the second body portion.

19. The cable gland according to claim 18, characterized in that: The retaining device comprises at least one first retaining portion, and the outer clamping portion comprises at least one protrusion, wherein at least one first retaining portion is elastically displaceable to enable at least one protrusion to pass through the deformable portion.

20. The cable gland according to claim 19, characterized in that: The at least one first retaining portion is adapted to engage the at least one recess of the outer clamp portion to releasably retain the outer clamp portion in the second body portion.

21. The cable gland according to claim 19 or 20, characterized in that: The at least one first retaining portion comprises at least one corresponding inclined surface, wherein the inclined surface is adapted to engage the outer clamping portion and can be elastically displaced due to the insertion of the outer clamping portion into the second body portion.

22. The cable gland according to any one of claims 18 to 21, characterized in that The retaining device comprises at least one second retaining portion, wherein the second retaining portion is adapted to engage an inner surface of the second body portion, and the retaining device is deformable to enable at least one second retaining portion to be disengaged from the inner surface of the second body portion.

23. The cable gland according to claim 22, characterized in that: The retaining means comprises a discontinuous ring made of an elastic material.

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