Water-tree-resistant medium-pressure crosslinked polyethylene insulation material production compounding reagent homogenizing device

Abstract

The utility model belongs to the technical field of polyethylene insulation material application, and particularly discloses a water-tree-resistant medium-pressure crosslinked polyethylene insulation material production compounding reagent homogenizing device. Comprising a circular shell, vertical supporting legs, a shell cover, a discharging opening with a valve, a feeding opening, a feeding pipe, a supporting frame, a shell cover through hole, a bearing seat, a motor, a coupler, a stirring shaft, a plurality of stirring teeth, a shaft sleeve and an upper sealing ring. Wherein the lengths of the plurality of stirring teeth are arranged at intervals in the vertical direction. The water-tree-resistant medium-pressure cross-linked polyethylene insulation material production compound reagent homogenizing device has the beneficial effects that 1, the device is used for replacing manual stirring, the mixing efficiency and the mixing homogenizing balance of compound reagent composition materials are improved, and the product quality is further improved; cleaning is convenient, the working efficiency is guaranteed, meanwhile, the homogeneous concentration of the compound reagent composition material can be detected, monitoring is convenient, additional concentration detection is not needed, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of polyethylene insulation material application technology, specifically involving a homogenization device for compounding reagents in the production of water-tree resistant medium-voltage cross-linked polyethylene insulation material. Background Technology

[0002] Studies have shown that after 8-12 years of operation, medium- and high-voltage power cables commonly develop a large number of water trees in their insulation layer. The growth of water trees is one of the main problems restricting the safety and service life of cross-linked polyethylene power cables, thus affecting the operational safety of the power grid.

[0003] The successful development of water-tree resistant cross-linked cables is of great significance for reducing the occurrence of water treeing in cables and extending their service life. Currently, there are records of water-tree resistant insulation materials replacing ordinary insulation materials and being gradually promoted in the medium and high voltage insulation fields.

[0004] Water-tree resistant medium-voltage cross-linked polyethylene insulation refers to cross-linked polyethylene insulation containing additives, polymer modifiers, or fillers that can delay the development and growth of water trees in the insulation.

[0005] The compounding agent is an indispensable component of water-tree resistant medium-voltage cross-linked polyethylene insulation material. It usually includes sorbitol acetal nucleating agents, ethylene vinyl acetate modified polymers, metallocene polymers, antioxidants, and cross-linking agents. During the production process, it needs to be homogenized and mixed, and then fed into the reciprocating single-screw extruder and the single-screw extruder for the processing of low-density polyethylene.

[0006] Currently, the homogenization of traditional compound reagents is completed manually after mixing, which is time-consuming and inefficient. In addition, the unevenness of the homogenization process greatly affects the quality and production efficiency of the water-tree resistant medium-voltage cross-linked polyethylene insulation material.

[0007] Therefore, based on the above problems, this utility model provides a homogenizing device for compounding reagents in the production of water-tree resistant medium-voltage cross-linked polyethylene insulation material. Utility Model Content

[0008] Purpose of the utility model: The purpose of this utility model is to provide a homogenizing device for compounding reagents in the production of water-tree resistant medium-voltage cross-linked polyethylene insulation material, thereby solving the problem of mixing and homogenizing compounding reagents in the existing background technology.

[0009] Technical Solution: This utility model relates to a homogenizing device for producing compounding reagents of water-tree resistant medium-voltage cross-linked polyethylene insulation material, comprising a circular shell, vertical support legs, and a shell cover. The bottom outer wall of the circular shell has a discharge port with a valve, and the upper side wall of the circular shell has a feed port. The upper outer wall of the circular shell has a feed pipe that mates with the feed port. A support frame is mounted on the shell cover. A shell cover through-hole is located inside the shell cover and below the support frame. A bearing seat is located on the shell cover and on the surface of the shell cover through-hole. A motor is mounted on the support frame, and a coupling is mounted on the motor. A stirring shaft, penetrating the shell cover through-hole and connected to the bearing seat and coupling, is located inside the circular shell. The stirring shaft has several stirring teeth. A bushing and an upper sealing ring that mate with the stirring shaft are located inside the shell cover through-hole. The lengths of the stirring teeth are vertically spaced at different intervals.

[0010] The homogenizing device for producing water-tree resistant medium-voltage cross-linked polyethylene insulation material further includes a vertical viewing window disposed within the outer wall of a circular shell, several fixing screw grooves disposed within the upper end face of the circular shell, several shell cover screw holes disposed within the outer layer of the shell cover, and bolts for fixing and assembling the shell cover and the circular shell through the shell cover screw holes and fixing screw grooves.

[0011] The homogenizing device for producing water-tree resistant medium-voltage cross-linked polyethylene insulation material further includes a circular discharge shell connected to a valved discharge port, a filter screen disposed within the circular discharge shell, a hollow external threaded plug disposed at one end of the circular discharge shell, a valved guide pipe disposed on one side of the hollow external threaded plug, and a lower sealing ring disposed on the hollow external threaded plug and used in conjunction with the inner wall of the circular discharge shell.

[0012] The homogenizing device for producing water-resistant medium-voltage cross-linked polyethylene insulation material according to the present technical solution further includes a backwashing inlet pipe with a valve and a backwashing outlet pipe with a valve, which are installed on the outer walls of both ends of the circular discharge shell.

[0013] The homogenizing device for producing water-resistant medium-voltage cross-linked polyethylene insulation material according to this technical solution also includes a sensor mounting groove disposed on one side of the outer wall of the bottom of the circular shell, and a concentration monitor installed at the bottom of the circular shell through the sensor mounting groove.

[0014] Compared with the prior art, the beneficial effects of the homogenizing device for producing water-tree resistant medium-voltage cross-linked polyethylene insulation material are as follows: 1. It replaces manual stirring, improves the mixing efficiency and homogenization balance of the compounding reagent components, and thus improves product quality; 2. It is easy to clean, ensuring its working efficiency, and can detect the homogenization concentration of the compounding reagent components, which is also easy to monitor and does not require additional concentration detection, thus improving working efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the following will describe the embodiments.

[0016] The accompanying drawings used in the embodiments are briefly introduced. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main structure of the homogenizing device for producing water-tree resistant medium-voltage cross-linked polyethylene insulation material;

[0018] Figure 2 This is a schematic diagram of the separate structure of the homogenizing device for producing water-tree resistant medium-voltage cross-linked polyethylene insulation material, including a valved outlet, a circular shell, a hollow external threaded plug, a lower sealing ring, a backwashing inlet pipe with a valve, and a backwashing outlet pipe with a valve.

[0019] The numbers in the diagram are as follows: 100-Circular shell, 101-Vertical support leg, 102-Shell cover, 103-Discharge port with valve, 104-Inlet, 105-Inlet pipe, 106-Shell cover through hole, 107-Support frame, 108-Motor, 109-Coupling, 110-Bearing seat, 111-Agitator shaft, 112-Agitator teeth, 113-Shaft sleeve, 114-Upper sealing ring, 115-Vertical viewing window, 116-Shell cover screw hole, 117-Fixing screw groove, 118-Bolt, 119-Sensor mounting slot, 120-Concentration monitor, 121-Circular discharge shell, 122-Filter screen, 123-Hollow external thread plug, 124-Guide pipe with valve, 126-Lower sealing ring, 126-Backwash outlet pipe with valve, 127-Backwash inlet pipe with valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "top," "bottom," "one side," "the other side," "front," "back," "middle part," "inner," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" 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 utility model based on the specific circumstances.

[0022] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1: As Figure 1 and Figure 2 The homogenizing apparatus for producing water-tree resistant medium-voltage cross-linked polyethylene insulation material includes a circular housing 100, vertical support legs 101, and a housing cover 102.

[0024] The bottom outer wall of the circular shell 100 is provided with a discharge port 103 with a valve.

[0025] A feed inlet 104 is provided inside the upper side wall of the circular shell 100.

[0026] The upper outer wall of the circular shell 100 is provided with a feed pipe 105 that mates with the feed inlet 104.

[0027] A support frame 107 is provided on the cover 102.

[0028] A cover through hole 106 is provided inside the cover 102 and below the support frame 107.

[0029] A bearing seat 110 is provided on the cover 102, and located on the surface of the cover through hole 106.

[0030] A motor 108 is mounted on the support frame 107.

[0031] A coupling 109 is installed on the motor 108.

[0032] The circular shell 100 is provided with a through hole 106 that passes through the shell cover, a bearing seat 110 and a coupling 109 for connecting the stirring shaft 111.

[0033] The stirring shaft 111 is provided with a number of stirring teeth 112.

[0034] The shell cover through hole 106 is provided with a bushing 113 and an upper sealing ring 114 that are used in conjunction with the stirring shaft 111;

[0035] Among them, the lengths of several stirring teeth 112 are set at vertical intervals of different lengths.

[0036] The working principle is as follows: (1) Sorbitol acetal nucleating agent, ethylene vinyl acetate modified polymer, metallocene polymer, antioxidant and crosslinking agent are added into the circular shell 100 through feed pipe 105 and feed port 104 according to the ratio;

[0037] (2) The motor 108 drives the stirring shaft 111 and several stirring teeth 112 through the coupling 109 to complete the rapid homogenization and mixing.

[0038] (3) The homogenized and mixed compound reagent is discharged through the valve outlet 103 and collected for later use.

[0039] Example 2: Based on Example 1, the homogenizing device for producing compound reagents of water-tree resistant medium-voltage cross-linked polyethylene insulation material further includes a vertical viewing window 115 disposed in the outer wall of the circular shell 100, a plurality of fixing screw grooves 117 disposed in the upper end face of the circular shell 100, a plurality of shell cover screw holes 116 disposed in the outer layer of the shell cover 102, and bolts 118 for fixing the shell cover 102 and the circular shell 100 through the shell cover screw holes 116 and fixing screw grooves 117.

[0040] During the homogenization and mixing process, the state of the homogenized mixture can be observed through the vertical viewing window 115; and the combination of the shell cover 102, the circular shell 100 and other components is easy to assemble and maintain the stirring shaft 111, several stirring teeth 112 and so on.

[0041] Example 3: Based on Example 1 or Example 2, the homogenizing device for producing compound reagents of water-tree resistant medium-voltage cross-linked polyethylene insulation material further includes a circular discharge shell 121 connected to a valved discharge port 103, a filter screen 122 disposed inside the circular discharge shell 121, a hollow external threaded plug 123 disposed at one end of the circular discharge shell 121, a valved guide pipe 124 disposed on one side of the hollow external threaded plug 123, and a lower sealing ring 125 disposed on the hollow external threaded plug 123 and used in conjunction with the inner wall of the circular discharge shell 121.

[0042] The added filter 122 can sieve the mixed and homogenized compound reagents, removing large particles and ensuring that the compound reagents are free of impurities before use.

[0043] Example 4: Based on Example 1, Example 2 or Example 3, the homogenizing device for producing compound reagents of water-resistant medium-voltage cross-linked polyethylene insulation material also includes a backwashing inlet pipe 127 with a valve and a backwashing outlet pipe 126 with a valve, which are installed on the outer walls of both ends of the circular discharge housing 121.

[0044] The backwash inlet pipe 127 with valve is connected to an external water supply device, and the backwash outlet pipe 126 with valve is connected to an external flushing water recovery device.

[0045] During backwashing, the valved discharge port 103 and the valved guide pipe 124 are both closed. The filter screen 122 can be rinsed by opening the valved inlet pipe 127 and the valved outlet pipe 126 respectively.

[0046] Example 5: Based on Example 1, Example 2, Example 3, or Example 4, the homogenizing device for producing compound reagents of water-resistant medium-voltage cross-linked polyethylene insulation material further includes a sensor mounting groove 119 disposed on one side of the bottom outer wall of the circular housing 100, and a concentration monitor 120 mounted on the bottom of the circular housing 100 through the sensor mounting groove 119.

[0047] The concentration monitor 120 is used to display the concentration of compound reagents intuitively, which is convenient for compounding operators to check and manage.

[0048] This structure's homogenizing device for producing water-tree resistant medium-voltage cross-linked polyethylene insulation material eliminates manual labor, greatly improves work efficiency and the quality of the compounding reagents, and ensures that the produced water-tree resistant medium-voltage cross-linked polyethylene insulation material has a uniform and stable quality.

[0049] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. Homogenizing apparatus for producing water-tree resistant medium-voltage cross-linked polyethylene insulation material, comprising a circular shell. (100), vertical support leg (101) and shell cover (102), characterized in that: The bottom outer wall of the circular shell (100) is provided with a discharge port (103) with a valve. The upper side wall of the circular shell (100) is provided with a feed inlet (104). The upper outer wall of the circular shell (100) is provided with a feed pipe (105) that is used in conjunction with the feed inlet (104). A support frame (107) is provided on the shell cover (102). Inside the shell cover (102) and below the support frame (107), there is a shell cover through hole (106). A bearing seat (110) is provided on the shell cover (102) and on the surface of the shell cover through hole (106). A motor (108) is installed on the support frame (107). A coupling (109) is provided on the motor (108). The circular shell (100) is provided with a stirring shaft (111) that is connected to the shell cover through hole (106), bearing seat (110) and coupling (109). The stirring shaft (111) is provided with a number of stirring teeth (112). The shell cover through hole (106) is provided with a bushing (113) and an upper sealing ring (114) for use with the stirring shaft (111). Among them, the length of several stirring teeth (112) is set at different vertical intervals.

2. The homogenizing apparatus for producing compounding reagents for water-tree resistant medium-voltage cross-linked polyethylene insulation material according to claim 1, characterized in that: The homogenizing device for producing compound reagents of water-tree resistant medium-voltage cross-linked polyethylene insulation material also includes a vertical viewing window (115) disposed in the outer wall of the circular shell (100), a plurality of fixing screw grooves (117) disposed in the upper end face of the circular shell (100), a plurality of shell cover screw holes (116) disposed in the outer layer of the shell cover (102), and bolts (118) for fixing and assembling the shell cover (102) and the circular shell (100) through the shell cover screw holes (116) and fixing screw grooves (117).

3. The homogenizing apparatus for producing compounding reagents for water-tree resistant medium-voltage cross-linked polyethylene insulation material according to claim 1 or 2, characterized in that: It also includes a circular discharge housing (121) connected to a valved discharge port (103), a filter screen (122) disposed in the circular discharge housing (121), a hollow external threaded plug (123) disposed in one end of the circular discharge housing (121), a valved guide pipe (124) disposed on one side of the hollow external threaded plug (123), and a lower sealing ring (125) disposed on the hollow external threaded plug (123) and used in conjunction with the inner wall of the circular discharge housing (121).

4. The homogenizing apparatus for producing compounding reagents for water-tree resistant medium-voltage cross-linked polyethylene insulation material according to claim 3, characterized in that: It also includes a backwash valve inlet pipe (127) and a backwash valve outlet pipe (126) installed on the outer walls of both ends of the circular discharge housing (121).

5. The homogenizing apparatus for producing compounding reagents for water-tree resistant medium-voltage cross-linked polyethylene insulation material according to claim 4, characterized in that: It also includes a sensor mounting slot (119) located on one side of the bottom outer wall of the circular housing (100), and a concentration monitor (120) mounted on the bottom of the circular housing (100) via the sensor mounting slot (119).

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