Granular filler pouring and filling device for intermediate joint

Abstract

A granular filler pouring and filling device for an intermediate joint comprises a funnel which is placed on a pouring hole and used for pouring granular filler into a filling cavity through the pouring hole; the inflation auxiliary tool is arranged on the other filling hole and used for blocking the filling hole; the inflation auxiliary tool is provided with an inflation hole and a squint window. The squint window is used for observing the internal condition of the filling cavity; and the air inflation device is provided with an air inflation pipe, the air inflation pipe is connected into the filling hole through the air inflation hole, and the air inflation device is used for inflating the filling cavity through the air inflation pipe while the granular filler is filled into the filling cavity. According to the utility model, the filling cavity in the middle joint can be filled in an inflating and filling manner, and the whole filling cavity can be filled with granular fillers quickly, conveniently, sufficiently and uniformly, so that the time and manpower resources are saved, the mounting efficiency is improved, the economic cost is reduced, and meanwhile, the completeness of a filling layer is ensured; and a good impact reduction effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of power cable accessories, in particular to a device for pouring and filling granular fillers for intermediate joints. Background Art

[0002] In the global power engineering construction, the demand for high-voltage cables and accessories advocated by long-distance power transmission is increasing, and the market is showing a growing trend. In the process of erecting transmission lines, high-voltage power cables cannot be infinitely long, and intermediate joints are needed to connect the cables. A filling layer is usually set between the joint body and the outer protective shell inside the intermediate joint. Granular fillers can be used inside the filling layer. When breakdown occurs, the high-temperature plasma generated will first combine with the granular filler to generate chemically stable silicon carbide and water, effectively preventing the impact of high-temperature plasma on the outer protective shell to avoid causing more serious damage.

[0003] As the voltage level increases, the volume of the intermediate joint is also increasing. The volume of the filler required to fill the filling layer is also increasing. In the existing installation process, the filling layer is mainly poured manually, which requires high manpower, is time-consuming, and cumbersome to operate. In addition, due to the large filling layer space between the outer protective shell of the intermediate joint and the insulating body of the intermediate joint, the irregular shape, and the small filling port, the existing manual filling method is usually unable to evenly and comprehensively fill the entire filling layer space with granular fillers, and the filling is uneven and incomplete, which will affect the effect of reducing the impact and bring safety hazards. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a device for pouring and filling a granular filler for an intermediate joint, which can realize that the granular filler quickly and completely fills the entire filling layer.

[0005] According to the device for filling and pouring a granular filler for an intermediate joint in the first embodiment of the utility model, the intermediate joint comprises an intermediate joint insulating body and an intermediate joint outer protective shell, the intermediate joint insulating body is arranged in the intermediate joint outer protective shell, a filling cavity is formed between the intermediate joint outer protective shell and the intermediate joint insulating body, and the filling cavity is used to fill the granular filler; two inlet ports are respectively arranged at both ends of the intermediate joint outer protective shell, and two pouring holes are arranged on the peripheral side of the intermediate joint outer protective shell;

[0006] The device for filling the intermediate joint with a granular filler comprises:

[0007] a funnel, placed on one of the injection holes, for injecting the granular filler into the filling cavity through the injection hole;

[0008] An air-inflating auxiliary tooling is arranged on another of the injection holes and is used to block the injection hole; the air-inflating auxiliary tooling is provided with an air-inflating hole and a peep window, and the peep window is used to observe the internal situation of the filling cavity;

[0009] The inflation device has an inflation tube, which is connected to the injection hole through the inflation hole. The inflation device is used to inflate the filling cavity through the inflation tube while the granular filler is injected into the filling cavity.

[0010] The device for filling the intermediate joint with a granular filler according to the embodiment of the utility model has at least the following beneficial effects:

[0011] The funnel is placed on a filling hole on the outer protective shell of the middle joint, so as to facilitate the addition of granular fillers into the filling cavity. The inflation device is connected to another filling hole through an inflation tube, so as to facilitate the inflation device to continuously inflate the filling cavity. The inflation auxiliary tooling is used to block the injection hole to which the inflation device is connected through the inflation tube, so as to prevent the granular fillers from splashing out and causing waste and pollution, or foreign impurities from accidentally falling into the filling cavity and damaging the internal structure. The filling device for the granular filler for the middle joint of the embodiment of the utility model can fill the filling cavity inside the middle joint by inflation and injection through the funnel, the inflation device and the inflation auxiliary tooling, so as to fill the entire filling cavity with granular fillers quickly, conveniently and fully and evenly. Compared with the existing manual filling method, it greatly saves time and human resources, improves installation efficiency, reduces economic costs, and at the same time ensures the integrity of the filling layer, achieving a good impact reduction effect.

[0012] According to some embodiments of the present invention, the two injection holes have the same structure and the same size.

[0013] According to some embodiments of the present invention, the two injection holes are arranged along the length direction.

[0014] According to some embodiments of the present invention, the injection ports of the two injection holes have the same height.

[0015] According to some embodiments of the utility model, the inflation auxiliary tooling includes a metal flange cover, the size of the metal flange cover matches the size of the injection hole, and the metal flange cover is provided with the inflation hole and the peep window.

[0016] According to some embodiments of the present invention, the peep window is a transparent acrylic observation window.

[0017] According to some embodiments of the utility model, the device for filling the intermediate joint with a granular filler further comprises a sealing cover, and the sealing cover is used for detachably sealing the two filling holes.

[0018] According to some embodiments of the utility model, the sealing cover is detachably connected to the outer protective shell of the intermediate joint through a bolt structure to seal the injection hole.

[0019] According to some embodiments of the present invention, the coarseness of the granular filler is 8 mesh to 70 mesh.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a structural diagram of an intermediate joint and a device for pouring and filling a granular filler for the intermediate joint according to an embodiment of the utility model;

[0023] Figure 2 This is a structural diagram of the inflation auxiliary tooling of an embodiment of the utility model;

[0024] Figure 3 This is a structural diagram of a sealing cover according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] The intermediate joint outer protective shell 110, the injection hole 111, the intermediate joint insulating body 120,

[0027] Funnel 210, inflation device 220, inflation auxiliary tooling 230, peep window 231, inflation hole 232, sealing cover 240,

[0028] The first cable 310, the second cable 320,

[0029] Granular filler 400. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present utility model, if there is a description of first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly stated, terms such as limitation, setting, installation, connection, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model based on the specific content of the technical solution.

[0034] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described below are only part of the embodiments of the present utility model, not all of the embodiments.

[0035] In order to better understand the utility model of the intermediate joint granular filler filling device, here refer to Figure 1 First, the intermediate joint is briefly described. The intermediate joint includes an intermediate joint insulating body 120 and an intermediate joint outer protective shell 110. The intermediate joint insulating body 120 is arranged in the intermediate joint outer protective shell 110. A filling cavity is formed between the intermediate joint outer protective shell 110 and the intermediate joint insulating body 120. The filling cavity is used to fill the granular filler 400. Two inlet ports are respectively arranged at both ends of the intermediate joint outer protective shell 110, and two injection holes 111 are arranged on the peripheral side of the intermediate joint outer protective shell 110.

[0036] Among them, the insulating body 120 of the intermediate joint can improve the electric field distribution at the cable break to prevent hazards such as creepage or breakdown; the outer protective shell 110 of the intermediate joint can protect other internal intermediate parts, isolate the internal parts from the external environment, play a role in waterproofing and moisture-proofing, and play an isolation role when a fault occurs inside the intermediate joint to avoid expanding the scope of the fault hazard.

[0037] When the intermediate joint is used, the outer sheath, semi-conductive layer and insulating layer of the first cable 310 and the second cable 320 are firstly stripped to expose a certain length of conductor, the conductor parts of the first cable 310 and the second cable 320 are connected, and then the intermediate joint insulating body 120 is installed on the outside of the connected conductor parts; after the first cable 310 and the second cable 320 are connected inside the intermediate joint insulating body 120, the intermediate joint outer protective shell 110 is installed on the outside of the intermediate joint insulating body 120, and the first cable 310 and the second cable 320 are connected from The two line inlets of the intermediate joint outer protective shell 110 pass through; at this point, a cavity structure, namely a filling cavity, is formed between the intermediate joint insulating body 120 and the intermediate joint outer protective shell 110. The filling cavity needs to be filled with granular filler 400 through the injection hole 111 on the intermediate joint outer protective shell 110 to form a filling layer. When breakdown occurs, the high-temperature plasma generated will first combine with the granular filler to generate chemically stable silicon carbide and water, which effectively prevents the high-temperature plasma from impacting the outer protective shell to avoid causing more serious damage.

[0038] The following is a description of the device for pouring and filling a granular filler for an intermediate joint according to an embodiment of the utility model based on the above application scenario.

[0039] refer to Figure 1 The embodiment of the utility model provides a device for filling a granular filler for an intermediate joint, comprising: a funnel 210, an inflating auxiliary tool 230 and an inflating device 220;

[0040] The funnel 210 is placed on a pouring hole 111 and is used to pour the granular filler 400 into the filling cavity through the pouring hole 111;

[0041] The inflation auxiliary tool 230 is arranged on another injection hole 111 and is used to block the injection hole 111. The inflation auxiliary tool 230 is provided with an inflation hole 232 and a peep window 231, and the peep window 231 is used to observe the internal situation of the filling cavity;

[0042] The inflation device 220 has an inflation tube, which is connected to the injection hole 111 through the inflation hole 232. The inflation device 220 is used to inflate the filling cavity through the inflation tube while the granular filler 400 is injected into the filling cavity.

[0043] The granular filler perfusion filling device for the intermediate joint of the utility model can realize filling the filling cavity inside the intermediate joint by means of inflation perfusion, and the perfusion process is as follows: a funnel 210 is placed on a perfusion hole 111 on the outer protective shell 110 of the intermediate joint, and the granular filler 400 is added into the filling cavity through the funnel 210; an inflation auxiliary tool 230 is placed on another perfusion hole 111 on the outer protective shell 110 of the intermediate joint, and an inflation hole 232 is opened on the inflation auxiliary tool 230, and an inflation tube of the inflation device 220 is inserted into the inflation hole 232 and Extend into the filling cavity; while pouring the granular filler 400 into the filling cavity through the funnel 210, turn on the inflation device 220, and the inflation device 220 continuously inflates the filling cavity so that the granular filler 400 can evenly fill the entire filling layer; when the injection holes 111 on one side of the funnel 210 are relatively full, the funnel 210, the inflation device 220, and the inflation auxiliary tooling 230 can be interchanged, and the granular filler 400 is added from the injection holes 111 on the other side, and the injection holes 111 on this side are inflated, thereby ensuring that the filling on both sides can be even and complete.

[0044] The funnel 210 is placed on a perfusion hole 111 on the outer protective shell 110 of the intermediate joint, so as to facilitate the addition of granular filler 400 into the filling cavity. The inflating device 220 is connected to another perfusion hole 111 through an inflating tube, so as to facilitate the inflating device 220 to continuously inflate the filling cavity. The inflating auxiliary tooling 230 is used to block the perfusion hole 111 to which the inflating device 220 is connected through the inflating tube, so as to prevent the granular filler from splashing out and causing waste and pollution, or external impurities from accidentally falling into the filling cavity and damaging the internal structure. The filling device for the intermediate joint with granular filler of the embodiment of the utility model can fill the filling cavity inside the intermediate joint by means of inflating and perfusion through the funnel 210, the inflating device 220 and the inflating auxiliary tooling 230, so as to fill the entire filling cavity with granular filler 400 quickly, conveniently and fully and evenly. Compared with the existing manual filling method, it greatly saves time and human resources, improves installation efficiency, reduces economic costs, and ensures the integrity of the filling layer, achieving a good impact reduction effect.

[0045] like Figure 1 As shown, in some embodiments, the two perfusion holes 111 have the same structure and the same size. When the perfusion hole 111 on one side of the funnel 210 is filled, the funnel 210, the inflation device 220, and the inflation auxiliary tooling 230 can be swapped. The two perfusion holes 111 have the same structure and the same size, so the position swap is not affected. After the swap, the granular filler 400 is added from the perfusion hole 111 on the other side, and the perfusion hole 111 on this side is inflated, so as to ensure that the filling on both sides can be uniform and complete.

[0046] like Figure 1As shown, in some embodiments, two injection holes 111 are arranged along the length direction. The two injection holes 111 are arranged along the length direction, located on the same horizontal line, and are respectively located at both ends of the peripheral side of the intermediate joint outer protective shell 110 near the two inlets.

[0047] like Figure 1 As shown, in some embodiments, the filling ports of the two filling holes 111 have the same height. The same filling port height can ensure that the inflation process proceeds smoothly and avoids air leakage.

[0048] In some embodiments, when the inflation auxiliary tooling 230 covers the filling hole 111, it can ensure that there is no risk of filler splashing out during the inflation process, causing waste or pollution, and can prevent the risk of foreign matter accidentally falling into the filling cavity of the middle joint and being difficult to remove or even causing damage to the internal structure.

[0049] like Figure 2 As shown, in some embodiments, the inflation auxiliary tooling 230 includes a metal flange cover, the size of the metal flange cover matches the size of the perfusion hole 111, and the metal flange cover is provided with an inflation hole 232 and a peep window 231. The size of the metal flange cover just matches the size of the perfusion hole 111, which can ensure that the inflation auxiliary tooling 230 is placed on the perfusion hole 111 without displacement, and the two perfusion holes 111 have the same structure and size, and the metal flange cover can match the size of the two perfusion holes 111, even if the funnel 210 is interchanged with the inflation device 220 and the metal flange cover, there is no effect. The inflation hole 232 provided on the metal flange cover facilitates the insertion of the inflation tube of the inflation device 220, and the peep window 231 facilitates the observation of the filling condition in the filling cavity.

[0050] In some embodiments, the viewing window 231 is a transparent acrylic viewing window, which facilitates observation of the filling condition inside the filling cavity of the intermediate joint.

[0051] like Figure 3 As shown, in some embodiments, the filling device for filling the intermediate joint with a granular filler further includes a sealing cover 240, which is used to detachably seal the two filling holes 111. After the filling cavity is completely filled using the inflation injection method, the funnel 210, the inflation device 220 and the inflation auxiliary tooling 230 are removed, and the sealing cover 240 is installed at the position of the two filling holes 111, which can seal the interior and protect the internal parts.

[0052] In some embodiments, the sealing cover 240 is detachably connected to the intermediate joint outer protective shell 110 through a bolt structure to seal the injection hole 111. Connecting the sealing cover 240 and the intermediate joint outer protective shell 110 through a bolt structure can better achieve fixed sealing.

[0053] In some embodiments, the particle filler 400 has a coarseness of 8 to 70 meshes. The particle filler 400 may be quartz sand with a coarseness of 8 to 70 meshes. Quartz sand has good stability. After filling with quartz sand, when breakdown occurs, the high-temperature plasma with carbon, hydrogen and free electrons as the main components will first combine with the quartz sand to generate chemically stable silicon carbide and water, effectively preventing the plasma from impacting the outer protective shell. Quartz sand with a coarseness of 8 to 70 meshes can better combine with high-temperature plasma with carbon, hydrogen and free electrons as the main components.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 utility model. In this specification, 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, the present invention is not limited to the above embodiments. Those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A device for filling a granular filler for an intermediate joint, characterized in that: The intermediate joint comprises an intermediate joint insulating body and an intermediate joint outer protective shell, wherein the intermediate joint insulating body is arranged in the intermediate joint outer protective shell, and a filling cavity is formed between the intermediate joint outer protective shell and the intermediate joint insulating body, wherein the filling cavity is used to fill granular fillers; two inlet ports are respectively arranged at both ends of the intermediate joint outer protective shell, and two injection holes are arranged on the peripheral side of the intermediate joint outer protective shell; The device for filling the intermediate joint with a granular filler comprises: a funnel, placed on one of the injection holes, for injecting the granular filler into the filling cavity through the injection hole; An air-inflating auxiliary tooling is arranged on another of the injection holes and is used to block the injection hole; the air-inflating auxiliary tooling is provided with an air-inflating hole and a peep window, and the peep window is used to observe the internal situation of the filling cavity; The inflation device has an inflation tube, which is connected to the injection hole through the inflation hole. The inflation device is used to inflate the filling cavity through the inflation tube while the granular filler is injected into the filling cavity.

2. The device for pouring and filling granular fillers for intermediate joints according to claim 1, characterized in that: The two injection holes have the same structure and the same size.

3. The device for pouring and filling granular fillers for intermediate joints according to claim 1 or 2, characterized in that: The two injection holes are arranged along the length direction.

4. The device for pouring and filling granular fillers for intermediate joints according to claim 3, characterized in that: The filling ports of the two filling holes have the same height.

5. The device for pouring and filling granular fillers for intermediate joints according to claim 2, characterized in that: The inflation auxiliary tooling comprises a metal flange cover, the size of the metal flange cover matches the size of the injection hole, and the metal flange cover is provided with the inflation hole and the peep window.

6. The device for pouring and filling granular fillers for intermediate joints according to claim 1 or 5, characterized in that: The peep window is a transparent acrylic observation window.

7. The device for pouring and filling granular fillers for intermediate joints according to claim 1, characterized in that: The device for filling the intermediate joint with granular filler further comprises a sealing cover, which is used for detachably sealing the two filling holes.

8. The device for pouring and filling granular fillers for intermediate joints according to claim 7, characterized in that: The sealing cover is detachably connected to the outer protective shell of the intermediate joint through a bolt structure to seal the injection hole.

9. The device for pouring and filling granular fillers for intermediate joints according to claim 1, characterized in that: The particle size of the granular filler is 8 mesh to 70 mesh.

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