Cable terminations and cable systems with heat dissipation structures

Abstract

This invention discloses a cable terminal with a heat dissipation structure and a cable system, relating to the field of cable accessory technology. The heat dissipation mechanism is located on the outside of the terminal body, without occupying additional internal space. Specifically, the circulating air pipe and the air pump are located outside the terminal body. The circulating air pipe connects a first chamber and a second chamber, thus forming a circulation loop. When the air pump is turned on, the gas in the first and second chambers circulates within the loop, improving gas flow and enhancing the heat dissipation performance of the cable terminal. Furthermore, the heat dissipation mechanism's location on the outside of the terminal body allows for better heat exchange between the gas in the circulating air pipe and the outside air, facilitating heat dissipation and further improving the heat dissipation effect.

Description

Technical Field

[0001] This invention relates to the field of cable accessories technology, and in particular to a cable terminal with a heat dissipation structure and a cable system. Background Technology

[0002] Cables generate continuous heat during operation, especially during prolonged high-load or full-load operation. This can lead to severe overheating inside the cable terminal. Since the inside of the cable terminal needs to be sealed and isolated from the external atmosphere, and the air inside the cable terminal is stagnant with a low heat dissipation coefficient, it is difficult for the heat inside the cable terminal to be transferred to the outside. As a result, the temperature of the cable terminal continues to rise during operation, accelerating the aging or deterioration of the cable and the insulation materials of the cable terminal, thereby increasing the risk of cable terminal failure. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a cable terminal with a heat dissipation structure, which can improve the heat dissipation effect of the cable terminal.

[0004] The present invention also proposes a cable system having the above-mentioned cable terminal with heat dissipation structure.

[0005] According to a first aspect of the present invention, a cable terminal with a heat dissipation structure includes: a terminal body, the terminal body including a stress cone, a cone support assembly, a cone cover assembly, a first sealing structure, and a second sealing structure; the stress cone is through which a cable passes; one end of the cone support assembly supports the stress cone; the cone support assembly is used to sleeve the cable and form a first chamber with the cable; the end of the first chamber away from the stress cone is sealed by the first sealing structure; one end of the cone cover assembly is sleeved on the stress cone and seals with the stress cone; the cone cover assembly is also sleeved on the cone support assembly and forms a second chamber with the cone support assembly; the second chamber communicates with the first chamber; the end of the second chamber away from the stress cone is sealed by the second sealing structure; and a heat dissipation mechanism disposed outside the terminal body, the heat dissipation mechanism including a circulating air pipe and an air pump disposed on the circulating air pipe; one end of the circulating air pipe communicates with the first chamber and the other end communicates with the second chamber.

[0006] The cable terminal with a heat dissipation structure according to embodiments of the present invention has at least the following beneficial effects:

[0007] In the cable terminal with a heat dissipation structure of the present invention, the heat dissipation mechanism is located outside the terminal body, without occupying additional internal space. Specifically, the circulating air pipe and the air pump are both located outside the terminal body. The circulating air pipe connects the first chamber and the second chamber, thus forming a circulation loop. When the air pump is turned on, the gas in the first and second chambers circulates within the loop, improving gas flow and enhancing the heat dissipation performance of the cable terminal. Furthermore, the location of the heat dissipation mechanism outside the terminal body allows for better heat exchange between the gas in the circulating air pipe and the outside air, facilitating heat dissipation and further improving the heat dissipation effect.

[0008] According to some embodiments of the present invention, the terminal body is provided with a first air hole communicating with the first chamber and a second air hole communicating with the second chamber. A first self-sealing valve is provided at the outer end of the first air hole, and a second self-sealing valve is provided at the outer end of the second air hole. The two ends of the circulating air pipe are respectively connected to the first self-sealing valve and the second self-sealing valve.

[0009] According to some embodiments of the present invention, the terminal body further includes a tail tube transition member, which is connected to the end of the cone support assembly away from the stress cone and is used to be sleeved on the outside of the cable. A third chamber communicating with the first chamber is formed between the tail tube transition member and the cable, and the first sealing structure is disposed at the end of the third chamber away from the first chamber.

[0010] According to some embodiments of the present invention, the tailpipe transition member is provided with a first air hole communicating with the third chamber, the second sealing structure is provided with a second air hole communicating with the second chamber, and the two ends of the circulating air pipe are respectively connected to the first air hole and the second air hole.

[0011] According to some embodiments of the present invention, a gas drying device is also provided on the circulating gas pipe.

[0012] According to some embodiments of the present invention, the first chamber near one end of the stress cone is connected to the second chamber near one end of the stress cone.

[0013] According to some embodiments of the present invention, the cone support assembly includes a cone support and a cone support support member. The cone support is sleeved on the outside of the stress cone and supports the stress cone. One end of the cone support support member is connected to the cone support and supports the cone support. The cone support support member is sleeved on the outside of the cable at intervals. The first chamber is formed between the cone support support member and the cable.

[0014] According to some embodiments of the present invention, the cone shroud assembly includes a cone shroud and a cone shroud support member, the cone shroud being sleeved over the stress cone and sealingly fitted with the stress cone, the cone shroud support member supporting the cone shroud, and a second chamber being formed between the cone shroud support member and the cone support assembly.

[0015] According to some embodiments of the present invention, the terminal body further includes a sleeve, which is sleeved outside the cone-shaped assembly, and a receiving cavity for filling an insulating layer is formed between the sleeve and the cone-shaped assembly, wherein the second cavity and the first cavity are both separated from the receiving cavity.

[0016] According to some embodiments of the present invention,

[0017] According to a second aspect of the present invention, a cable system includes: a cable terminal with a heat dissipation structure as described in the above embodiments; a cable passing through the cone support assembly and the stress cone, wherein the cable and the cone support assembly form the first chamber.

[0018] The cable system according to embodiments of the present invention has at least the following beneficial effects:

[0019] In the cable system of this invention, the heat dissipation mechanism is located outside the terminal body, without occupying additional internal space. Specifically, the circulating air pipe and the air pump are both located outside the terminal body. The circulating air pipe connects the first chamber and the second chamber, thus forming a circulation loop. When the air pump is turned on, the gas in the first and second chambers circulates within the loop, improving gas flow and enhancing the heat dissipation performance of the cable terminal. Furthermore, the location of the heat dissipation mechanism outside the terminal body allows for better heat exchange between the gas in the circulating air pipe and the outside air, facilitating heat dissipation and further improving the heat dissipation effect.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a partial cross-sectional view of a cable terminal with a heat dissipation structure according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0024] Figure 3 for Figure 1 A magnified view of a portion of the figure shown;

[0025] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0026] Figure 5 for Figure 3 Enlarged view of point C in the middle.

[0027] Icon labels:

[0028] 10. Cables;

[0029] 100. Terminal body; 101. First chamber; 102. Second chamber; 103. Third chamber; 104. Receiving cavity; 110. Stress cone; 120. Cone support assembly; 121. Cone support support; 122. Cone support; 123. Elastic element; 130. Cone cover assembly; 131. Cone cover; 132. Cone cover support; 140. Sleeve; 150. Insulating layer; 160. First sealing structure; 161. First flange; 162. Support ring; 163. First pressure sealing ring; 170. Second sealing structure; 171. Second flange; 172. Third flange; 173. Second pressure sealing ring; 180. Tailpipe transition piece; 181. Fourth flange; 190. Tailpipe;

[0030] 200. Heat dissipation mechanism; 210. Circulating air pipe; 220. Air pump; 230. Gas drying device; 240. First self-sealing valve; 250. Second self-sealing valve. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] like Figure 1 As shown, an embodiment of the present invention relates to a cable terminal with a heat dissipation structure, which includes a terminal body 100 and a heat dissipation mechanism 200. The heat dissipation mechanism 200 is used to improve the heat dissipation effect of the terminal body 100 and reduce the risk that the related cable 10 and insulation material will age or deform due to the terminal body 100 being in a high-temperature environment for a long time.

[0035] The terminal body 100 includes a stress cone 110, a cone support assembly 120, and a cone cover assembly 130.

[0036] The stress cone 110 is for the cable 10 to pass through. Specifically, the stress cone 110 is provided with a cable passage, the cable 10 passes through the cable passage and is interference-fitted with the stress cone 110. The stress cone 110 is used to disperse the electric field intensity at the end of the cable 10, alleviate electric field concentration, and eliminate local stress peaks.

[0037] One end of the cone support assembly 120 supports the stress cone 110. The cone support assembly 120 is used to sleeve the cable 10, and a first chamber 101 is formed between the cone support assembly 120 and the cable 10. Specifically, the cone support assembly 120 is used to support the stress cone 110 to reduce the risk of relative slippage between the stress cone 110 and the cable 10. The cone support assembly 120 is also sleeved on the outside of the cable 10, wherein the cone support assembly 120 and the cable 10 are spaced apart, and the first chamber 101 is formed between the cone support assembly 120 and the cable 10.

[0038] Combination Figure 1 and Figure 2 Furthermore, the cone support assembly 120 includes a cone support 122 and a cone support support member 121. The cone support 122 is sleeved on the outside of the stress cone 110 and supports the stress cone 110. One end of the cone support support member 121 is connected to the cone support 122 and supports the cone support 122. The cone support support member 121 extends from the cone support 122 away from the stress cone 110. The cone support support member 121 is sleeved on the outside of the cable 10 at intervals. The first chamber 101 is formed between the cone support support member 121 and the cable 10.

[0039] Furthermore, the cone support assembly 120 also includes an elastic element 123 disposed between the cone support support 121 and the cone support 122. The elastic element 123 is used to provide a supporting force to the cone support 122 so that the cone support 122 abuts against the stress cone 110. The elastic element 123 may be a spring.

[0040] Combination Figure 1 and Figure 3 It should be noted that the end of the first chamber 101 furthest from the stress cone 110 is sealed by the first sealing structure 160. In other words, the end of the first chamber 101 furthest from the stress cone 110 is in a sealed state, isolated from the outside. It should be noted that the sealing of the end of the first chamber 101 furthest from the stress cone 110 by the first sealing structure 160 can mean that the first sealing structure 160 directly seals the end of the first chamber 101 furthest from the stress cone 110, preventing this end from communicating with the outside; or it can mean that the end of the first chamber 101 furthest from the stress cone 110 is still connected to other chambers, but these chambers are sealed by the first sealing structure 160, thus isolating the end of the first chamber 101 furthest from the stress cone 110 from the outside.

[0041] like Figure 1As shown, one end of the cone shroud assembly 130 is fitted over the stress cone 110 and seals against it. The cone shroud assembly 130 is also fitted over the cone support assembly 120, forming a second chamber 102 between them. Specifically, one end of the cone shroud assembly 130 is fitted over the stress cone 110 and abuts against it, thus forming a seal between the cone shroud assembly 130 and the stress cone 110. Furthermore, the cone shroud assembly 130 extends from the stress cone 110 away from it and is spaced over the cone support assembly 120, so that the cone shroud assembly 130 and the cone support assembly 120 support each other to form the second chamber 102. It can be understood that because one end of the cone shroud assembly 130 is fitted over the stress cone 110 and seals against it, the end of the second chamber 102 near the stress cone 110 is sealed.

[0042] Specifically, the cone shroud assembly 130 includes a cone shroud 131 and a cone shroud support 132. The cone shroud 131 is sleeved on the outside of the stress cone 110 and is sealed to the stress cone 110. The cone shroud support 132 supports the cone shroud 131, reducing the risk of relative sliding between the cone shroud 131 and the stress cone 110. The cone shroud support 132 extends from the cone shroud 131 away from the stress cone 110 and is sleeved on the outside of the cone support 121 at intervals. At least a portion of the second chamber 102 is formed between the cone shroud support 132 and the cone support 121.

[0043] Combination Figure 1 and Figure 2 Furthermore, the second chamber 102 is connected to the first chamber 101. Specifically, the end of the second chamber 102 near the stress cone 110 is connected to the end of the first chamber 101 near the stress cone 110.

[0044] like Figure 2 As shown, specifically, the end of the cone support 121 near the stress cone 110 extends to the side of the stress cone 110, and the end of the cone support 121 near the stress cone 110 is spaced apart from the stress cone 110 to form a gap, through which the second chamber 102 and the first chamber 101 communicate.

[0045] Combination Figure 1 and Figure 3 It should be noted that the end of the second chamber 102 away from the stress cone 110 is sealed by the second sealing structure 170; in other words, the end of the second chamber 102 away from the stress cone 110 is in a sealed state isolated from the outside.

[0046] It should be further noted that the first chamber 101 and the second chamber 102 mentioned above are isolated from the outside world. This can prevent outside air, water vapor and other substances from entering the first chamber 101 and the second chamber 102 and affecting components such as the cable 10 and the stress cone 110.

[0047] Combination Figure 1 and Figure 3 The heat dissipation mechanism 200 is located outside the terminal body 100. The heat dissipation mechanism 200 includes a circulating air pipe 210 and an air pump 220 disposed on the circulating air pipe 210. One end of the circulating air pipe 210 is connected to the first chamber 101 and the other end is connected to the second chamber 102.

[0048] It is understood that the heat dissipation mechanism 200 is located outside the terminal body 100, without occupying additional internal space. Specifically, the circulating air pipe 210 and the air pump 220 are both located outside the terminal body 100. The circulating air pipe 210 connects the first chamber 101 and the second chamber 102, thus forming a circulation loop. When the air pump 220 is turned on, the gas in the first chamber 101 and the second chamber 102 can circulate within the loop, improving gas flow and enhancing the heat dissipation performance of the cable terminal. Furthermore, because the heat dissipation mechanism 200 is located outside the terminal body 100, the gas in the circulating air pipe 210 can also exchange heat more effectively with the outside air, making it easier for the heat in the circulating air pipe 210 to dissipate to the outside, further improving the heat dissipation effect.

[0049] like Figure 3 As shown, the terminal body 100 is further provided with a first air hole communicating with the first chamber 101 and a second air hole communicating with the second chamber 102, and the two ends of the circulating air pipe 210 are respectively connected to the first air hole and the second air hole.

[0050] Specifically, the terminal body 100 also includes a tailpipe transition piece 180. The tailpipe transition piece 180 is connected to the end of the cone support assembly 120 away from the stress cone 110 and is used to be sleeved on the outside of the cable 10. A third chamber 103 communicating with the first chamber 101 is formed between the tailpipe transition piece 180 and the cable 10. A first sealing structure 160 is disposed at the end of the third chamber 103 away from the first chamber 101. The tailpipe transition piece 180 is provided with a first vent communicating with the third chamber 103, and the second sealing structure 170 is provided with a second vent communicating with the second chamber 102. The two ends of the circulating air pipe 210 are respectively connected to the first vent and the second vent.

[0051] Furthermore, a first self-sealing valve 240 is provided at the outer end of the first air hole, and a second self-sealing valve 250 is provided at the outer end of the second air hole. The two ends of the circulating air pipe 210 are respectively connected to the first self-sealing valve 240 and the second self-sealing valve 250.

[0052] Understandably, before the recirculating air pipe 210 is connected, the first self-sealing valve 240 seals the first air hole, and the second self-sealing valve 250 seals the second air hole. When the two ends of the recirculating air pipe 210 are connected to the first self-sealing valve 240 and the second self-sealing valve 250 respectively, the first self-sealing valve 240 and the second self-sealing valve 250 are in the normally open state.

[0053] Furthermore, a gas drying device 230 is also installed on the circulating gas pipe 210. This gas drying device 230 can dry the gas and reduce the moisture content in the gas. Even further, the gas drying device 230 contains color-changing silica gel. When the color-changing silica gel has completely changed color, the gas drying device 230 needs to be replaced.

[0054] It should be noted that when replacing the gas drying device 230, the connection structure between the circulating gas pipe 210 and the first self-sealing valve 240 can be removed. After the circulating gas pipe 210 and the first self-sealing valve 240 are removed, the first self-sealing valve 240 remains closed, which can prevent outside air from entering the first chamber 101 and the second chamber 102.

[0055] Combination Figure 3 and Figure 5 In some embodiments, the first sealing structure 160 includes a first flange 161 connected to the end of the tailpipe transition member 180 away from the cone support assembly 120, and a first pressure sealing ring 163 sealed to the cable 10 by the first flange 161. The first flange 161 is also connected to a support ring 162, which is supported by the first pressure sealing ring 163.

[0056] Furthermore, the terminal body 100 also includes a tail pipe 190, which is connected to the first flange 161 and sleeved on the outside of the cable 10.

[0057] Combination Figure 3 and Figure 4 In some embodiments, the second sealing structure 170 includes a second flange 171 connected to one end of the cone support assembly 120 away from the stress cone 110, a third flange 172 connected to one end of the cone cover assembly 130 away from the stress cone 110, and a second sealing ring 173 disposed between the second flange 171 and the third flange 172.

[0058] Furthermore, the tailpipe transition piece 180 is connected to a fourth flange 181 at one end near the cone support assembly 120. The fourth flange 181 is connected to the second flange 171, and the second vent passes through the second flange 171 and the fourth flange 181 and communicates with the second chamber 102.

[0059] like Figure 1As shown, it should be noted that the cable terminal also includes a sleeve 140, which is sleeved on the outside of the cone assembly 130. A receiving cavity 104 for filling the insulation layer 150 is formed between the sleeve 140 and the cone assembly 130. The second cavity 102 and the first cavity 101 are both separated from the receiving cavity 104.

[0060] It is understandable that the stress cone 110 is sealed around the cable 10 to prevent the insulation layer 150 from entering between the stress cone 110 and the cable 10. One end of the cone cover assembly 130 is also fitted around the stress cone 110 to prevent the insulation layer 150 from entering the second chamber 102.

[0061] The present invention also provides a cable system including a cable terminal with a heat dissipation structure and a cable 10 as described in the above embodiments, wherein the cable 10 passes through the cone support assembly 120 and the stress cone 110, and the cable 10 and the cone support assembly 120 form a first chamber 101.

[0062] In the cable system of the present invention, the heat dissipation mechanism 200 is disposed outside the terminal body 100, without occupying additional internal space of the terminal body 100. Specifically, the circulating air pipe 210 is located outside the terminal body 100, and the air pump 220 is also located outside the terminal body 100. The circulating air pipe 210 connects the first chamber 101 and the second chamber 102, thus forming a circulation loop. When the air pump 220 is turned on, the gas in the first chamber 101 and the second chamber 102 can circulate within the circulation loop, thereby improving gas flow and enhancing the heat dissipation performance of the cable terminal. Furthermore, since the heat dissipation mechanism 200 is disposed outside the terminal body 100, the gas in the circulating air pipe 210 can also better exchange heat with the outside air, making it easier for the heat in the circulating air pipe 210 to dissipate to the outside, further improving the heat dissipation effect.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," 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, the 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.

[0064] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cable termination with heat dissipation structure, characterized by, The cable terminal comprises a terminal body and a heat dissipation mechanism. The terminal body comprises a stress cone, a cone holder assembly, a cone cover assembly, a first sealing structure and a second sealing structure. The stress cone is arranged for a cable to pass through.

2. The cable termination with heat sink structure of claim 1, wherein, The cone holder assembly supports the stress cone at one end thereof.

3. The cable termination with heat sink structure of claim 1, wherein, The cone holder assembly is arranged outside the cable and forms a first cavity between the cable and the cone holder assembly.

4. The cable termination with heat sink structure of claim 3, wherein, The first cavity is sealed by the first sealing structure at one end thereof away from the stress cone.

5. The cable termination with heat sink structure of claim 1, wherein, The cone cover assembly is arranged outside the stress cone and is sealingly connected to the stress cone at one end thereof.

6. The cable termination with heat sink structure of claim 1, wherein, The cone cover assembly is further arranged outside the cone holder assembly and forms a second cavity between the cone holder assembly and the cone cover assembly.

7. The cable termination with heat sink structure of claim 1, wherein, The second cavity is in communication with the first cavity.

8. The cable termination with heat sink structure of claim 1, wherein, The second cavity is sealed by the second sealing structure at one end thereof away from the stress cone.

9. The cable termination with heat sink structure of claim 1, wherein, The heat dissipation mechanism is arranged outside the terminal body.

10. A cable system characterized in that, The heat dissipation mechanism comprises a circulating air pipe and an air pump arranged on the circulating air pipe. One end of the circulating air pipe is in communication with the first cavity. The other end of the circulating air pipe is in communication with the second cavity. The terminal body is provided with a first air hole in communication with the first cavity and a second air hole in communication with the second cavity. An outer end of the first air hole is provided with a first self-sealing valve. An outer end of the second air hole is provided with a second self-sealing valve. Two ends of the circulating air pipe are connected to the first self-sealing valve and the second self-sealing valve respectively. The terminal body further comprises a tail pipe transition piece. The tail pipe transition piece is connected to one end of the cone holder assembly away from the stress cone and is arranged outside the cable. The tail pipe transition piece forms a third cavity in communication with the first cavity between the cable and the tail pipe transition piece. The first sealing structure is arranged at one end of the third cavity away from the first cavity. The tail pipe transition piece is provided with a first air hole in communication with the third cavity. The second sealing structure is provided with a second air hole in communication with the second cavity. Two ends of the circulating air pipe are in communication with the first air hole and the second air hole respectively. The circulating air pipe is further provided with a gas drying device. The first cavity is in communication with one end of the second cavity close to the stress cone. The cone holder assembly comprises a cone holder and a cone holder support. The cone holder is arranged outside the stress cone and supports the stress cone. One end of the cone holder support is connected to the cone holder and supports the cone holder. The cone holder support is arranged outside the cable at intervals. The first cavity is formed between the cone holder support and the cable. The cone cover assembly comprises a cone cover and a cone cover support. The cone cover is arranged outside the stress cone and is sealingly connected to the stress cone. The cone cover support supports the cone cover. The second cavity is formed between the cone cover support and the cone holder assembly. The terminal body further comprises a sleeve. The sleeve is arranged outside the cone cover assembly. A containing cavity for an insulation layer is formed between the sleeve and the cone cover assembly. The second cavity and the first cavity are arranged separately from the containing cavity. The cable terminal with the heat dissipation structure according to any one of claims 1 to 9. a cable, the cable being routed through the cone holder assembly and the stress cone, and the cable forming the first chamber with the cone holder assembly.

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