Die

Abstract

The embodiment of the invention provides a mold. The mold comprises a movable mold, a fixed mold, a first loose core and a second loose core. The fixed mold and the movable mold are detachably connected, a cavity is defined by the fixed mold and the movable mold, and the shape of the cavity is matched with that of the pole. The first loose core is detachably arranged in the cavity, and the shape of the first loose core is matched with that of the first mounting cavity. The second loose core is detachably arranged in the cavity, and the shape of the second loose core is matched with the shape of the second mounting cavity. The first loose core and the second loose core are arranged at an interval, and are respectively arranged at an interval with at least partial region of the cavity wall of the cavity so as to jointly form an interval space, and the interval space is used for casting and molding the pole shell. According to the mold, the use amount of pouring materials can be reduced.

Description

Technical Field

[0001] The present application relates to the field of mold technology and particularly to a mold. Background Art

[0002] In the pole-mounted circuit breaker in the related art, an insulating rod and an insulating cylinder are usually installed in the pole, and a capacitor is arranged in the insulating cylinder. The pole shell can be integrally cast by a mold.

[0003] However, in the process of casting the pole shell and forming the pole through the mold in the related art, a large amount of casting material (such as epoxy resin) is used, which not only increases the material cost but also increases the weight of the pole. Summary of the invention

[0004] In view of this, the main purpose of the embodiments of the present application is to provide a mold that can reduce the amount of casting material used.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] The embodiment of the present application provides a mold, which is used to form a pole shell, which is a component of a pole, and the pole at least includes an inlet end, an outlet end, the pole shell, an insulating pull rod, a first insulating cylinder and a second insulating cylinder, the inlet end and the outlet end are both arranged on the pole shell, the first insulating cylinder is connected to the inlet end, and the second insulating cylinder is connected to the outlet end, and the mold includes:

[0007] Moving model;

[0008] A fixed mold, wherein the fixed mold and the movable mold are detachably connected, and the fixed mold and the movable mold enclose a cavity, and the cavity matches the shape of the pole;

[0009] A first core pulling device, wherein the first core pulling device is detachably disposed in the mold cavity;

[0010] A second core pulling device, wherein the second core pulling device is detachably disposed in the mold cavity;

[0011] The first core pulling and the second core pulling are spaced apart and are spaced apart from the cavity wall of the cavity to form a spacing space together, and the spacing space is used for casting the pole shell; the first core pulling is used to form a first installation cavity, and the second core pulling is used to form a second installation cavity, the first installation cavity is used to install the first insulating cylinder, and the second installation cavity is used to install the insulating pull rod and the second insulating cylinder.

[0012] In one embodiment, the pole further includes a third insulating tube, and the third insulating tube is connected to the incoming line end;

[0013] The mold also includes a third core puller, which is detachably arranged in the cavity and is spaced apart from the first core puller, the second core puller and the cavity wall of the cavity respectively; the third core puller is used to form a third installation cavity, and the third installation cavity is used to install the third insulating cylinder.

[0014] In one embodiment, the pole further includes a third insulating tube, and the third insulating tube is connected to the incoming line end;

[0015] The first core pulling portion includes a first core pulling portion and a second core pulling portion connected to each other, the first core pulling portion is used to form a first sub-cavity, the second core pulling portion is used to form a second sub-cavity, the first installation cavity includes the first sub-cavity and the second sub-cavity, the first sub-cavity is used to install the first insulating tube, and the second sub-cavity is used to install the third insulating tube.

[0016] In one embodiment, the second core pulling portion includes a third core pulling portion and a fourth core pulling portion connected to each other, and the outer dimensions of the fourth core pulling portion are larger than the outer dimensions of the third core pulling portion, the third core pulling portion is used to form a third sub-cavity, and the fourth core pulling portion is used to form a fourth sub-cavity, the second installation cavity includes the third sub-cavity and the fourth sub-cavity, the third sub-cavity is used to install the second insulating tube, and the fourth sub-cavity is used to install the insulating pull rod.

[0017] In one embodiment, the pole also includes a vacuum arc extinguishing chamber and a conductive rod having the outlet end, and the mold also includes a die head assembly, which is detachably disposed in the cavity, and at least one of the vacuum arc extinguishing chamber and the conductive rod is connected to the die head assembly to be positioned and installed in the cavity.

[0018] In one embodiment, the die assembly includes a first die, the first die is connected to the conductive rod, and the first die is arranged on the fourth core-pulling part to position and install the conductive rod in the cavity.

[0019] In one embodiment, the pole further includes a first connecting piece, and one end of the conductive rod close to the vacuum interrupter has a first connecting hole, and the first connecting hole is used to connect the pole shell to the vacuum interrupter through the first connecting piece after the pole shell is cast;

[0020] The mold includes a second connecting piece, and the first die head has a second connecting hole. When the first die head is installed on the conductive rod, the second connecting hole is correspondingly connected to the first connecting hole and is connected through the second connecting piece.

[0021] In one embodiment, the second connection hole is a through hole that passes through the first die head, and the first connection hole is open only on one side close to the second connection hole;

[0022] The second connecting member passes through the second connecting hole and the first connecting hole in sequence from a side of the second connecting hole away from the first connecting hole;

[0023] The side of the first die head facing away from the first connecting hole is in contact with the fourth core-pulling portion.

[0024] In one embodiment, the conductive rod includes a rod body and a connecting end portion, the connecting end portion is connected to an end of the rod body close to the vacuum interrupter, and a partial area of ​​the connecting end portion extends along the radial direction of the rod body to form a plate body;

[0025] A partial area of ​​one side of the first die head close to the plate body is recessed to form a first positioning groove for positioning and installing the plate body.

[0026] In one embodiment, the size of the first positioning groove matches the outer size of the plate body; and / or the first positioning groove is a semicircular groove.

[0027] In one embodiment, a partial area of ​​the fourth core-pulling portion close to a side of the conductive rod is recessed to form a second positioning groove, and at least a partial area of ​​the first die head is disposed in the second positioning groove.

[0028] In one embodiment, the die assembly includes a second die, which is connected to one end of the vacuum arc chamber near the fourth core-pulling part, and the second die is arranged on the fourth core-pulling part to position and install the vacuum arc chamber in the cavity.

[0029] In one embodiment, a partial area of ​​the fourth core-pulling portion close to one side of the vacuum arc extinguishing chamber is recessed to form a third positioning groove, and at least a partial area of ​​the second die head is arranged in the third positioning groove.

[0030] In one embodiment, the outer dimensions of at least the region of the second die head extending into the third positioning groove gradually decrease toward the side away from the vacuum interrupter chamber.

[0031] In one embodiment, the die assembly includes a third die, which is connected to one end of the vacuum arc chamber away from the fourth core-pulling portion, and the third die is arranged on the cavity wall of the cavity to position and install the vacuum arc chamber in the cavity.

[0032] In one embodiment, the pole includes a first connecting cap electrically connected to the incoming line end, and the first connecting cap is used to connect to the first insulating tube after the pole shell is cast and formed; the die head assembly includes a fourth die head, one end of the fourth die head is detachably connected to the first connecting cap, and the other end of the fourth die head is detachably connected to the first core pulling; and / or, the pole includes a second connecting cap electrically connected to the outgoing line end, and the second connecting cap is used to connect to the second insulating tube after the pole shell is cast and formed; the die head assembly includes a fifth die head, one end of the fifth die head is detachably connected to the second connecting cap, and the other end of the fifth die head is detachably connected to the second core pulling.

[0033] The embodiment of the present application provides a mold, which includes a movable mold, a fixed mold, a first core puller and a second core puller. The first core puller is detachably arranged in the mold cavity. The second core puller is detachably arranged in the mold cavity. The first core puller and the second core puller are arranged at intervals, and are both arranged at intervals with the cavity wall of the mold cavity to form a spacing space together. The spacing space is used for casting and molding the pole shell. The first core puller is used to form a first installation cavity, and the second core puller is used to form a second installation cavity. On the one hand, by setting the second core puller, a second installation cavity in which an insulating pull rod and a second insulating cylinder can be installed at the same time can be formed in the pole shell cast by the mold. As a result, the space for installing the insulating pull rod in the pole shell is connected to the space for installing the second insulating cylinder, which can reduce the amount of casting material between the insulating pull rod and the second insulating cylinder, thereby reducing the overall casting material amount in the process of molding the pole, thereby reducing the material cost and further reducing the weight of the pole. On the other hand, the first insulating cylinder is connected to the incoming line end, and the insulating pull rod is connected to the end of the vacuum arc chamber that is electrically connected to the outgoing line end. When the vacuum arc chamber of the pole is disconnected, the first insulating cylinder is still at a high potential, while the insulating pull rod will maintain a low potential, which causes a large voltage difference between the first insulating cylinder and the insulating pull rod. Therefore, the first core pulling and the second core pulling are arranged at intervals to separate the first installation cavity and the second installation cavity in the casting-molded pole shell, so that the first insulating cylinder and the insulating pull rod can be separated, which can greatly reduce the risk of local discharge between the first insulating cylinder and the insulating pull rod, and improve the safety performance of the pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a partial structural schematic diagram of a mold according to an embodiment of the present application;

[0035] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0036] Figure 3 for Figure 1 A partial enlarged view from another angle at point A in the middle; the vacuum interrupter and the conducting rod are hidden in the picture;

[0037] Figure 4 for Figure 3 The structural diagram of the second core pulling;

[0038] Figure 5 for Figure 3 A schematic diagram of the structure of the first die head;

[0039] Figure 6 for Figure 2 Schematic diagram of the structure of the conductive rod;

[0040] Figure 7 for Figure 3 A schematic diagram of the structure of the second die head;

[0041] Figure 8 A partial structural schematic diagram of a pole housing according to an embodiment of the present application.

[0042] Description of Reference Numerals

[0043] 10. Mold; 10a. Cavity; 10b. Spacing space; 13. First core pulling; 14. Second core pulling; 14a. Second positioning groove; 14b. Third positioning groove; 141. Third core pulling portion; 142. Fourth core pulling portion; 15. Third core pulling; 16. Die assembly; 161. First die; 161a. Second connecting hole; 161b. First positioning groove; 162. Second die; 163. Third die; 21. Inlet terminal; 22. Outlet terminal; 23. Pole housing; 23a. First mounting cavity; 23b. Second mounting cavity; 23ba. Third sub-cavity; 23bb. Fourth sub-cavity; 23c. Third mounting cavity; 24. Vacuum arc extinguishing chamber; 25. Conductive rod; 25a. First connecting hole; 251. Rod body; 252. Connecting end; 253. Plate body. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and are therefore only used as examples, and the protection scope of the present application cannot be limited by this. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0045] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0046] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0047] An embodiment of the present application provides a mold 10, see Figure 1 and Figure 8 The mold 10 is used to form a pole shell 23, which is a component of the pole. The pole at least includes an inlet terminal 21, an outlet terminal 22, a pole shell 23, an insulating pull rod, a first insulating cylinder and a second insulating cylinder. The inlet terminal 21 and the outlet terminal 22 are both arranged on the pole shell 23, the first insulating cylinder is connected to the inlet terminal 21, and the second insulating cylinder is connected to the outlet terminal 22.

[0048] See also Figure 1 and Figure 2 The mold 10 includes a movable mold, a fixed mold, a first core pulling 13 and a second core pulling 14.

[0049] The fixed mold and the movable mold are detachably connected, and the fixed mold and the movable mold enclose a cavity 10a, and the cavity 10a matches the shape of the pole.

[0050] The first core pulling 13 is detachably disposed in the cavity 10a.

[0051] The second core pulling 14 is detachably disposed in the cavity 10a.

[0052] The first core pulling member 13 and the second core pulling member 14 are spaced apart from each other and are spaced apart from the cavity wall of the cavity 10 a to form a space 10 b together. The space 10 b is used for casting and molding the pole housing 23 .

[0053] The first core pulling 13 is used to form a first installation cavity 23a, and the second core pulling 14 is used to form a second installation cavity 23b. The first installation cavity 23a is used to install the first insulating cylinder, and the second installation cavity 23b is used to install the insulating pull rod and the second insulating cylinder.

[0054] Specifically, the mold 10 can be used to cast the pole shell 23, and after the casting is completed, part of the pole structure (such as the vacuum interrupter 24, the conductive rod 25, etc.) can be installed together with the pole shell 23. It can be understood that the mold 10 is used to cast the pole shell 23, and it is not used to form the vacuum interrupter 24, the conductive rod 25, the insulating pull rod, the first insulating cylinder, the second insulating cylinder and other structures of the pole.

[0055] The inlet terminal 21 of the pole is used for supplying high voltage current into the pole, and the outlet terminal 22 is used for supplying high voltage current out of the pole.

[0056] In fact, the pole shell 23 of the pole also includes a vacuum arc chamber 24 and a conductive rod 25. The conductive rod 25 has an outlet terminal 22. The two ends of the vacuum arc chamber 24 are electrically connected to the incoming terminal 21 and the conductive rod 25 respectively. The high voltage current flows from the incoming terminal 21 through the vacuum arc chamber 24 and flows out from the outlet terminal 22 of the conductive rod 25.

[0057] The insulating rod is used to connect one end of the vacuum interrupter 24 to the electrically connected conductive rod 25. When an abnormality is detected in the distribution network line, the mechanism box will pull the insulating rod downward, so that the insulating rod pulls the moving contact in the vacuum interrupter 24 downward, and the inside of the vacuum interrupter 24 is disconnected, thereby disconnecting the above-mentioned path, achieving the effect of isolating the fault.

[0058] The first insulating tube and the second insulating tube are both tube structures, and the interiors thereof are used to install capacitors (such as voltage sensors or high-voltage capacitors of power-taking devices).

[0059] The first insulating tube is connected to the incoming line terminal 21 , that is, the capacitor in the first insulating tube is connected to the incoming line terminal 21 .

[0060] The second insulating tube is connected to the outlet terminal 22 , that is, the capacitor in the second insulating tube is connected to the outlet terminal 22 .

[0061] The movable mold and the fixed mold of the mold 10 are separable and closable. When the movable mold and the fixed mold are closed, the two can enclose and form a cavity 10a.

[0062] The cavity 10a is the cavity inside the mold 10 after the mold is closed, and the shape of the cavity 10a matches the shape of the pole. That is to say, after installing some structures of the pole (such as the vacuum arc extinguishing chamber 24, the conductive rod 25, etc.), various core pullers and other accessory structures (such as the die head assembly 16) into the cavity 10a, the pole shell 23 can be formed by injecting the casting material into the cavity 10a, and after it is cooled and demolded, the vacuum arc extinguishing chamber 24, the conductive rod 25, various core pullers and other accessories and other structures have been installed in the pole shell 23. Then, the core pullers and other accessory structures are pulled out of the pole shell 23, and then the insulating pull rods and various insulating cylinder structures are installed in the corresponding positions to complete the pole assembly.

[0063] The first core puller 13 corresponds to the first installation cavity 23a and is used to form the first installation cavity 23a. That is, after the pole housing 23 is cast and formed, the cavity formed after the first core puller 13 is removed is the first installation cavity 23a.

[0064] The second core puller 14 corresponds to the second installation cavity 23b and is used to form the second installation cavity 23b. That is, after the pole housing 23 is cast and formed, the cavity formed after the second core puller 14 is removed is the second installation cavity 23b.

[0065] Since the first core pull 13 and the second core pull 14 are spaced apart from each other, rather than being fitted together, during the casting process, the casting material will fill the space between the first core pull 13 and the second core pull 14. After the casting is completed, the first core pull 13 and the second core pull 14 are separated, and the first installation cavity 23a and the second installation cavity 23b formed by the two respectively will also be separated from each other.

[0066] It should be noted that since the first insulating tube is connected to the incoming line terminal 21, and the insulating rod is connected to the end of the vacuum arc chamber 24 that is electrically connected to the outgoing line terminal 22, when the vacuum arc chamber 24 of the pole is disconnected, the first insulating tube is still at a high potential, while the insulating rod maintains a low potential, which results in a large voltage difference between the first insulating tube and the insulating rod, which poses a risk of local discharge and easily causes damage to the structure.

[0067] Therefore, in the process of forming the pole by the mold 10, the first core puller 13 and the second core puller 14 are spaced apart from each other, so that the first installation cavity 23a and the second installation cavity 23b are also separated from each other, so that the first insulating cylinder is separated from the insulating pull rod and the second insulating cylinder by the pole shell 23, respectively, thereby reducing the risk of local discharge through the insulating effect of the pole shell 23.

[0068] Furthermore, since the second insulating cylinder is connected to the outlet terminal 22, and the insulating pull rod is also connected to the end of the vacuum arc chamber 24 electrically connected to the outlet terminal 22, when the vacuum arc chamber 24 of the pole is disconnected, both the second insulating cylinder and the insulating pull rod are at the same or similar low potential, and there is no large voltage difference between the two, so no local discharge will be generated between the two. Therefore, the second core pull 14 can be set larger, and its size is larger than the total outer dimensions of the second insulating cylinder and the insulating pull rod, so that the size of the second installation cavity 23b formed by the second core pull 14 is larger than the total outer dimensions of the second insulating cylinder and the insulating pull rod, thereby facilitating the installation of the second insulating cylinder and the insulating pull rod in the second installation cavity 23b, and the second insulating cylinder and the insulating pull rod do not need to be placed in separate installation cavities, respectively, so that the amount of casting material used in the pole shell 23 can be reduced.

[0069] The interval between the first core puller 13 and the second core puller 14 , the interval between the first core puller 13 and the cavity wall of the cavity 10 a , and the interval between the second core puller 14 and the cavity wall of the cavity 10 a together form an interval space 10 b for casting material to cast and form the pole housing 23 .

[0070] It should be noted that, in some embodiments, the pole may include only the first insulating cylinder and the second insulating cylinder, and in other embodiments, the pole may further include other insulating cylinders.

[0071] For example, see Figure 8 The pole also includes a third insulating cylinder, and the third insulating cylinder is connected to the incoming line terminal 21.

[0072] See 3 and Figure 8 The mold 10 also includes a third core pull 15, which is detachably arranged in the mold cavity 10a, and the third core pull 15 is spaced apart from the first core pull 13, the second core pull 14 and the cavity wall of the mold cavity 10a, and the third core pull 15 is used to form a third installation cavity 23c, and the third installation cavity 23c is used to install a third insulating cylinder. Therefore, by adding the third core pull 15, after the pole shell 23 is cast and molded by the mold 10, a third installation cavity 23c can be formed in the pole shell 23 for installing the third insulating cylinder. At the same time, since the third core pull 15 is spaced apart from the first core pull 13 and the second core pull 14, respectively, the third installation cavity 23c is also separated from the second installation cavity 23b, so that the third insulating cylinder is separated from the insulating pull rod and the second insulating cylinder through the pole shell 23, respectively, thereby reducing the risk of partial discharge through the insulation effect of the pole shell 23.

[0073] In the mold 10 of the embodiment of the present application, on the one hand, by providing the second core puller 14, a second installation cavity 23b capable of simultaneously installing an insulating rod and a second insulating tube can be formed in the pole shell 23 cast by the mold 10. As a result, the space for installing the insulating rod in the pole shell 23 is connected to the space for installing the second insulating tube, which can reduce the amount of casting material between the insulating rod and the second insulating tube, thereby reducing the overall amount of casting material in the process of forming the pole, thereby reducing material costs and further reducing the weight of the pole. On the other hand, by providing the first core puller 13 and the second core puller 14 at intervals, the first installation cavity 23a and the second installation cavity 23b in the pole shell 23 after casting are separated, thereby separating the first insulating tube and the insulating rod, which can greatly reduce the risk of local discharge between the first insulating tube and the insulating rod, and improve the safety performance of the pole.

[0074] In fact, in the case where the pole also includes other insulating cylinders, all the insulating cylinders connected to the incoming terminal 21 can be placed in the first installation cavity 23a.

[0075] For example, the pole further includes a third insulating cylinder, and the third insulating cylinder is connected to the incoming line terminal 21 .

[0076] The first core pulling 13 includes a first core pulling part and a second core pulling part connected to each other, the first core pulling part is used to form a first sub-cavity, the second core pulling part is used to form a second sub-cavity, the first installation cavity 23a includes a first sub-cavity and a second sub-cavity, the first sub-cavity is used to install the first insulating cylinder, and the second sub-cavity is used to install the third insulating cylinder. Therefore, the first installation cavity 23a formed by the first core pulling 13 can be used to install the first insulating cylinder and the third insulating cylinder at the same time. Compared with the situation where the first insulating cylinder and the third insulating cylinder are installed in separate installation cavities, installing both the first insulating cylinder and the third insulating cylinder into the first installation cavity 23a can reduce the amount of casting material used and reduce the deadweight of the pole.

[0077] It should be noted that the first sub-cavity and the second sub-cavity are not separated from each other, but are interconnected, and belong to different areas of the first installation cavity 23a respectively.

[0078] Similarly, the first core-pulling portion and the second core-pulling portion are not separated from each other, and both belong to different areas of the first core-pulling portion 13 .

[0079] In one embodiment, please refer to Figure 4 and Figure 8 The second core pulling part 14 includes a third core pulling part 141 and a fourth core pulling part 142 connected to each other, and the outer dimensions of the fourth core pulling part 142 are larger than the outer dimensions of the third core pulling part 141. The third core pulling part 141 is used to form a third sub-cavity 23ba, and the fourth core pulling part 142 is used to form a fourth sub-cavity 23bb. The second installation cavity 23b includes a third sub-cavity 23ba and a fourth sub-cavity 23bb. The third sub-cavity 23ba is used to install the second insulating cylinder, and the fourth sub-cavity 23bb is used to install the insulating pull rod. In this way, the amount of casting material can be further reduced.

[0080] Specifically, since the second core pulling part 14 is used to form the second installation cavity 23b, and the second installation cavity 23b is used to install the second insulating cylinder and the insulating pull rod, by increasing the outer dimensions of the fourth core pulling part 142, the size of the fourth sub-cavity 23bb for installing the insulating pull rod can be increased, and the overall size of the second installation cavity 23b can be increased, thereby reducing the amount of casting material used in the pole housing 23.

[0081] In one embodiment, please refer to Figure 2 and Figure 3, the pole also includes a vacuum arc chamber 24 and a conductive rod 25 with an outlet terminal 22, and the mold 10 also includes a die assembly 16, which is detachably arranged in the cavity 10a, and at least one of the vacuum arc chamber 24 and the conductive rod 25 is connected to the die assembly 16 to be positioned and installed in the cavity 10a. Thus, on the one hand, it is convenient to position and install at least one of the vacuum arc chamber 24 and the conductive rod 25 at a corresponding position in the cavity 10a, and after the pole shell 23 is cast and formed by the mold 10, at least one of the vacuum arc chamber 24 and the conductive rod 25 can be located at the installation position in the pole shell 23 without further assembly. On the other hand, the die assembly 16 can play a good fixing effect, which can improve the installation stability of at least one of the vacuum arc chamber 24 and the conductive rod 25 in the mold 10.

[0082] It should be noted that the die assembly 16 is detachably arranged in the cavity 10 a and can be detached after the pole housing 23 is cast.

[0083] Depending on the actual situation, only the vacuum arc chamber 24 can be connected to the die head assembly 16 to be positioned and installed in the cavity 10a, or only the conductive rod 25 can be connected to the die head assembly 16 to be positioned and installed in the cavity 10a, or both the vacuum arc chamber 24 and the conductive rod 25 can be connected to the die head assembly 16 to be positioned and installed in the cavity 10a.

[0084] It should be noted that the specific structure and location of the die assembly 16 need to be set according to actual conditions.

[0085] For example, see Figure 3 and Figure 5 The die assembly 16 includes a first die 161, which is connected to the conductive rod 25. The first die 161 is arranged on the fourth core-pulling portion 142 to position and install the conductive rod 25 in the cavity 10a. Thus, the conductive rod 25 can be easily positioned and installed at a set position in the cavity 10a, and the conductive rod 25 can be fixed at the same time.

[0086] In fact, the first die head 161 and the conductive rod 25 are detachably connected, so that the first die head 161 can be easily detached from the conductive rod 25 after the pole housing 23 is cast.

[0087] The manner of detachable connection between the first die head 161 and the conductive rod 25 is not limited.

[0088] For example, see Figure 5 and Figure 6The pole also includes a first connecting piece. The end of the conductive rod 25 close to the vacuum arc chamber 24 has a first connecting hole 25a. The first connecting hole 25a is used to connect the pole housing 23 to the vacuum arc chamber 24 through the first connecting piece after the pole housing 23 is cast.

[0089] The mold 10 includes a second connecting member, and the first die head 161 has a second connecting hole 161 a. When the first die head 161 is mounted on the conductive rod 25, the second connecting hole 161 a is correspondingly connected to the first connecting hole 25 a and connected through the second connecting member.

[0090] Specifically, after the pole is formed, the conductive rod 25 of the pole is connected to the vacuum interrupter 24 through the first connector, thereby realizing the passage of the circuit in the pole. The connection method between the first connector and the vacuum interrupter 24 is not limited.

[0091] It is understandable that the first connector is an electrical connector, and its specific material is not limited. For example, the first connector is a metal material. For another example, the first connector is a metal "soft connector". Its material is relatively soft and has a certain elasticity, which can facilitate the connection between the conductive rod 25 and the vacuum arc chamber 24.

[0092] After the pole is formed, the first connection hole 25a of the conductive rod 25 is used to connect with the first connecting member.

[0093] During the casting process of the mold 10, the first connection hole 25a of the conductive rod 25 is connected to the second connection hole 161a on the first die head 161, so that the second connection piece passes through the two connection holes in sequence, thereby realizing the connection between the two. That is to say, during the casting process of the mold 10, the first connection hole 25a of the conductive rod 25 is used to connect with the first die head 161 through the second connection piece to play a role in installation and fixing. At the same time, since the second connection piece is inserted into the first connection hole 25a of the conductive rod 25 during the casting process of the mold 10, it can prevent the casting material from entering the first connection hole 25a. It can avoid the problem that after the pole is formed, the first connection hole 25a cannot be connected to the first connection piece due to being blocked by the casting material.

[0094] It should be noted that the specific structures of the first connection hole 25a, the second connection hole 161a and the second connection member are not limited.

[0095] For example, the first connection hole 25a and the second connection hole 161a are both threaded holes. The second connection member is a screw or a bolt.

[0096] In one embodiment, the second connection hole 161 a is a through hole penetrating the first die head 161 , and the first connection hole 25 a is open only at one side close to the second connection hole 161 a .

[0097] From the side of the second connecting hole 161 a facing away from the first connecting hole 25 a , the second connecting member passes through the second connecting hole 161 a and the first connecting hole 25 a in sequence.

[0098] The side of the first die head 161 facing away from the first connecting hole 25a is in contact with the fourth core-pulling portion 142. Thus, the risk of the casting material entering the first connecting hole 25a can be further reduced.

[0099] Specifically, only one side of the first connection hole 25a close to the second connection hole 161a is open, while the other sides are closed, so as to prevent the casting material from entering the first connection hole 25a from the other sides of the first connection hole 25a.

[0100] The side of the first connecting hole 25a close to the second connecting hole 161a is connected to the second connecting hole 161a, and on the side of the second connecting hole 161a away from the first connecting hole 25a, the outer surface of the first die head 161 is in contact with the fourth core-pulling portion 142. Therefore, under the blocking of the fourth core-pulling portion 142, the risk of the casting material entering the first connecting hole 25a can be further reduced.

[0101] In one embodiment, please refer to Figure 5 and Figure 6 The conductive rod 25 includes a rod body 251 and a connecting end 252, the connecting end 252 is connected to one end of the rod body 251 close to the vacuum interrupter 24, and a part of the connecting end 252 extends along the radial direction of the rod body 251 to form a plate 253. Thus, a uniform electric field can be achieved.

[0102] A part of the first die head 161 near the plate body 253 is recessed to form a first positioning groove 161b for positioning and installing the plate body 253. Thus, the conductive rod 25 can be easily installed and positioned on the first die head 161, and the two can be easily connected.

[0103] It should be noted that the cross-sectional dimension of the plate 253 along the radial direction of the rod 251 is larger than the cross-sectional dimension of the rod 251 , thereby preventing the end of the rod 251 from being too sharp and causing the problem of tip discharge, and making the electric field more uniform.

[0104] The area where the first die head 161 fits the plate body 253 is recessed, thereby forming a first positioning groove 161 b, which can facilitate the positioning of the plate body 253 in the first positioning groove 161 b, and further facilitate the installation and positioning of the conductive rod 25 on the first die head 161 .

[0105] It should be noted that the shape of the first positioning groove 161b can be set according to actual conditions.

[0106] For example, see Figure 5 and Figure 6The size of the first positioning groove 161b matches the outer dimensions of the plate 253. In other words, the first positioning groove 161b adopts the same shape and size as the plate 253, thereby further improving the installation stability of the plate 253 in the first positioning groove 161b.

[0107] For another example, the first positioning groove 161b is a semicircular groove, which is convenient for processing and manufacturing.

[0108] In one embodiment, please refer to Figure 4 The fourth core-pulling part 142 is partially recessed near the conductive rod 25 to form a second positioning groove 14a, and at least a portion of the first die head 161 is disposed in the second positioning groove 14a. Thus, the first die head 161 can be easily positioned and installed on the fourth core-pulling part 142, and the conductive rod 25 can be easily positioned and matched with the fourth core-pulling part 142.

[0109] It should be noted that, the first die head 161 may be disposed in the second positioning groove 14a only partially or in its entirety.

[0110] Furthermore, during the process of assembling the mold, the second connecting member is first passed through the second connecting hole 161a and the first connecting hole 25a in sequence to connect the first die head 161 with the conductive rod 25, and then the first die head 161 is installed in the second positioning groove 14a. This facilitates the installation of the second connecting member, improves the installation stability of the second connecting member, prevents the second connecting member from falling out, and reduces the risk of the casting material entering the first connecting hole 25a.

[0111] In one embodiment, the die assembly 16 includes a second die 162, which is connected to one end of the vacuum arc chamber 24 near the fourth core-pulling portion 142, and the second die 162 is arranged on the fourth core-pulling portion 142 to position and install the vacuum arc chamber 24 in the cavity 10a.

[0112] That is, the second die head 162 is used to install the vacuum interrupter 24 on the fourth core-pulling portion 142, so as to position and install the vacuum interrupter 24 at a set position in the cavity 10a.

[0113] In one embodiment, please refer to Figure 4 The fourth core-pulling portion 142 is partially recessed near the vacuum interrupter 24 to form a third positioning groove 14b, and at least a portion of the second die head 162 is disposed in the third positioning groove 14b. Thus, the second die head 162 can be easily positioned and installed on the fourth core-pulling portion 142, and the vacuum interrupter 24 and the fourth core-pulling portion 142 can be easily positioned and matched.

[0114] It should be noted that, the second die head 162 may be disposed in the third positioning groove 14b only partially or in its entirety.

[0115] In one embodiment, please refer to Figure 3 and Figure 7 , the outer dimensions of the area of ​​the second die head 162 at least extending into the third positioning groove 14b gradually decrease toward the side away from the vacuum interrupter 24. Thus, it is convenient to install the second die head 162 into the third positioning groove 14b.

[0116] In one embodiment, please refer to Figure 3 The die assembly 16 includes a third die 163, which is connected to the end of the vacuum interrupter 24 away from the fourth core-pulling portion 142, and is disposed on the cavity wall of the cavity 10a to position and install the vacuum interrupter 24 in the cavity 10a. In other words, the end of the vacuum interrupter 24 away from the fourth core-pulling portion 142 is installed through the third die 163, thereby realizing the positioning and installation of the vacuum interrupter 24 at a set position in the cavity 10a.

[0117] In one embodiment, the pole includes a first connection cap electrically connected to the inlet terminal 21, and the first connection cap is used to connect to the first insulating cylinder after the pole housing 23 is cast. The die assembly 16 includes a fourth die, one end of the fourth die is detachably connected to the first connection cap, and the other end of the fourth die is detachably connected to the first core puller 13. Thus, the first connection cap can be easily positioned and installed in the mold 10.

[0118] Specifically, before pouring, the first connection cap needs to be installed on the first core pull 13, and the first connection cap on the first core pull 13 needs to be connected to the incoming line terminal 21. After the pouring is completed and the core pull is pulled out, the first connection cap needs to be connected to the first insulating tube.

[0119] Before pouring, the first connecting cap is installed on the first core puller 13 through the fourth die head, and after the pouring is completed, the fourth die head can be detached.

[0120] In one embodiment, the pole includes a second connection cap electrically connected to the outlet terminal 22, and the second connection cap is used to connect to the second insulating cylinder after the pole housing 23 is cast. The die assembly 16 includes a fifth die, one end of the fifth die is detachably connected to the second connection cap, and the other end of the fifth die is detachably connected to the second core puller 14. Thus, the second connection cap can be easily positioned and installed in the mold 10.

[0121] Specifically, before pouring, the second connection cap needs to be installed on the second core pull 14, and the second connection cap on the second core pull 14 needs to be connected to the outlet terminal 22. After the pouring is completed and the core pull is pulled out, the first connection cap needs to be connected to the first insulating tube.

[0122] Before pouring, the first connecting cap is installed on the first core puller 13 through the fourth die head, and after the pouring is completed, the fourth die head can be detached.

[0123] In one embodiment, the mold 10 further includes a third core puller 15, the pole further includes a third insulating cylinder and a third connecting cap electrically connected to the first connecting cap, and the third connecting cap is used to connect to the third insulating cylinder after the pole housing 23 is cast and formed. The die assembly 16 includes a sixth die, one end of the sixth die is detachably connected to the third connecting cap, and the other end of the sixth die is detachably connected to the third core puller 15. Thus, the third connecting cap can be easily positioned and installed in the mold 10.

[0124] In one embodiment, the pole includes at least three insulating tubes, and two of the insulating tubes can be selected to respectively set the high-voltage capacitor of the voltage sensor and the high-voltage capacitor of the power extraction device.

[0125] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in a specific embodiment", or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0126] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A mold, characterized in that: The mold is used to form a pole shell, which is a component of a pole. The pole at least includes an inlet end, an outlet end, the pole shell, an insulating pull rod, a first insulating cylinder and a second insulating cylinder. The inlet end and the outlet end are both arranged on the pole shell, the first insulating cylinder is connected to the inlet end, and the second insulating cylinder is connected to the outlet end. The mold includes: Moving model; A fixed mold, wherein the fixed mold and the movable mold are detachably connected, and the fixed mold and the movable mold enclose a cavity, and the cavity matches the shape of the pole; A first core pulling device, wherein the first core pulling device is detachably disposed in the mold cavity; A second core pulling device, wherein the second core pulling device is detachably disposed in the mold cavity; The first core pulling and the second core pulling are spaced apart and are spaced apart from the cavity wall of the cavity to form a spacing space together, and the spacing space is used for casting the pole shell; the first core pulling is used to form a first installation cavity, and the second core pulling is used to form a second installation cavity, the first installation cavity is used to install the first insulating cylinder, and the second installation cavity is used to install the insulating pull rod and the second insulating cylinder.

2. The mold according to claim 1, characterized in that: The pole also includes a third insulating tube, and the third insulating tube is connected to the incoming line end; The mold also includes a third core puller, which is detachably arranged in the cavity and is spaced apart from the first core puller, the second core puller and the cavity wall of the cavity respectively; the third core puller is used to form a third installation cavity, and the third installation cavity is used to install the third insulating cylinder.

3. The mold according to claim 1, characterized in that: The pole also includes a third insulating tube, and the third insulating tube is connected to the incoming line end; The first core pulling portion includes a first core pulling portion and a second core pulling portion connected to each other, the first core pulling portion is used to form a first sub-cavity, the second core pulling portion is used to form a second sub-cavity, the first installation cavity includes the first sub-cavity and the second sub-cavity, the first sub-cavity is used to install the first insulating tube, and the second sub-cavity is used to install the third insulating tube.

4. The mold according to any one of claims 1 to 3, characterized in that: The second core pulling portion includes a third core pulling portion and a fourth core pulling portion connected to each other, and the outer dimensions of the fourth core pulling portion are larger than the outer dimensions of the third core pulling portion. The third core pulling portion is used to form a third sub-cavity, and the fourth core pulling portion is used to form a fourth sub-cavity. The second installation cavity includes the third sub-cavity and the fourth sub-cavity. The third sub-cavity is used to install the second insulating tube, and the fourth sub-cavity is used to install the insulating pull rod.

5. The mold according to claim 4, characterized in that: The pole also includes a vacuum arc extinguishing chamber and a conductive rod having the outlet terminal, and the mold also includes a die head assembly, which is detachably arranged in the cavity, and at least one of the vacuum arc extinguishing chamber and the conductive rod is connected to the die head assembly to be positioned and installed in the cavity.

6. The mold according to claim 5, characterized in that: The die assembly comprises a first die connected to the conductive rod, and the first die is arranged on the fourth core-pulling portion to position and install the conductive rod in the cavity.

7. The mold according to claim 6, characterized in that: The pole further comprises a first connecting piece, and one end of the conductive rod close to the vacuum interrupter has a first connecting hole, and the first connecting hole is used to connect the pole shell to the vacuum interrupter through the first connecting piece after the pole shell is cast; The mold includes a second connecting piece, and the first die head has a second connecting hole. When the first die head is installed on the conductive rod, the second connecting hole is correspondingly connected to the first connecting hole and is connected through the second connecting piece.

8. The mold according to claim 7, characterized in that: The second connection hole is a through hole that passes through the first die head, and the first connection hole is open only on one side close to the second connection hole; The second connecting member passes through the second connecting hole and the first connecting hole in sequence from a side of the second connecting hole away from the first connecting hole; The side of the first die head facing away from the first connecting hole is in contact with the fourth core-pulling portion.

9. The mold according to claim 6, characterized in that: The conductive rod comprises a rod body and a connecting end portion, wherein the connecting end portion is connected to an end of the rod body close to the vacuum interrupter chamber, and a partial area of ​​the connecting end portion extends along the radial direction of the rod body to form a plate body; A partial area of ​​one side of the first die head close to the plate body is recessed to form a first positioning groove for positioning and installing the plate body.

10. The mold according to claim 9, characterized in that: The size of the first positioning groove matches the outer size of the plate body; and / or, The first positioning groove is a semicircular groove.

11. The mold according to claim 6, characterized in that: A partial area of ​​the fourth core-pulling portion close to one side of the conductive rod is recessed to form a second positioning groove, and at least a partial area of ​​the first die head is arranged in the second positioning groove.

12. The mold according to claim 5, characterized in that: The die assembly includes a second die connected to one end of the vacuum arc chamber close to the fourth core-pulling portion, and the second die is arranged on the fourth core-pulling portion to position and install the vacuum arc chamber in the cavity.

13. The mold according to claim 12, characterized in that: A partial area of ​​the fourth core-pulling portion close to one side of the vacuum arc-extinguishing chamber is recessed to form a third positioning groove, and at least a partial area of ​​the second die head is arranged in the third positioning groove.

14. The mold according to claim 13, characterized in that Towards the side away from the vacuum interrupter, the outer dimensions of the region where the second die head at least extends into the third positioning groove gradually decrease.

15. The mold according to claim 5, characterized in that: The die assembly includes a third die connected to an end of the vacuum interrupter away from the fourth core-pulling portion, and the third die is arranged on the cavity wall of the cavity to position and install the vacuum interrupter in the cavity.

16. The mold according to claim 5, characterized in that The pole comprises a first connection cap electrically connected to the incoming line end, the first connection cap being used to connect to the first insulating tube after the pole shell is cast; the die assembly comprises a fourth die, one end of the fourth die is detachably connected to the first connection cap, and the other end of the fourth die is detachably connected to the first core puller; and / or, The pole includes a second connecting cap electrically connected to the outlet terminal, and the second connecting cap is used to connect to the second insulating tube after the pole shell is cast; the die assembly includes a fifth die, one end of the fifth die is detachably connected to the second connecting cap, and the other end of the fifth die is detachably connected to the second core pulling.

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