Electric heater power adjustment cabinet and manufacturing method thereof

Abstract

The present invention discloses an electric heater power adjustment cabinet and a manufacturing method thereof, wherein the power adjustment cabinet includes an incoming line cabinet and at least one outgoing line cabinet; contactor modules and / or power adjustment modules of different arrangements and combinations are detachably provided in the outgoing line cabinet; the number of the contactor modules is determined by the number of heating elements of the electric heater that only require switch adjustment, and the specifications of the contactor modules are determined by the specifications of the corresponding heating elements; the number of the power adjustment modules is determined by the number of heating elements of the electric heater that require power adjustment, and the specifications of the power adjustment modules are determined by the specifications of the corresponding heating elements. The present invention can flexibly adjust the number and specifications of the contactor modules and / or power adjustment modules, can adapt to changes in actual production needs, and improve the application adaptability of the power adjustment cabinet; at the same time, it greatly reduces maintenance costs and maintenance time.

Description

Technical Field

[0001] The present invention belongs to the technical field of power regulating cabinets, and in particular relates to an electric heater power regulating cabinet and a manufacturing method thereof. Background Art

[0002] In recent years, with the continuous development of special industries at home and abroad, especially the heating system in the field of aviation engine test gas source, the automatic control system of electric heating temperature mostly relies on rectifier elements and then adjusts the power to achieve it.

[0003] Currently, high-temperature air supply systems use electric heaters to heat compressed air, and power control cabinets are used to regulate the heater's power and output temperature. Traditional power control cabinets are fixed cabinets, where IGBT power control units are grouped and fixedly installed within the cabinet. Once the power control cabinet is manufactured and installed, it cannot be readjusted or rearranged if requirements change. A power control unit failure necessitates a complete system shutdown for repair, which is both time-consuming and disruptive. Summary of the Invention

[0004] The purpose of the present invention is to provide an electric heater power control cabinet and a manufacturing method thereof, so as to solve the problems that traditional power control cabinets are all fixed cabinets, which make it impossible to readjust and rearrange the cabinet when demand changes, and require the entire system to be shut down for maintenance in the event of a fault, resulting in high maintenance costs and long maintenance time.

[0005] The present invention solves the above technical problems through the following technical solutions: an electric heater power control cabinet, comprising an incoming line cabinet and at least one outgoing line cabinet; contactor modules and / or power control modules of different arrangements and combinations are detachably provided in the outgoing line cabinet;

[0006] The number of the contactor modules is determined by the number of heating elements of the electric heater that only require switching adjustment. The contactor modules correspond one to one with the heating elements that only require switching adjustment. The specifications of the contactor modules are determined by the specifications of the corresponding heating elements.

[0007] The number of the power regulation modules is determined by the number of heating elements of the electric heater that require power regulation. The power regulation modules correspond one to one with the heating elements that require power regulation, and the specifications of the power regulation modules are determined by the specifications of the corresponding heating elements.

[0008] The input end of the incoming cabinet is connected to an external power supply, the output end of the incoming cabinet is respectively connected to each heating element, and the incoming cabinet is also connected to each outgoing cabinet; the input end of the contactor module and / or the power regulation module is connected to the outgoing cabinet, and the output end of the contactor module and / or the power regulation module is connected to the corresponding heating element.

[0009] Furthermore, each of the contactor modules is composed of a fuse and a contactor contact connected in series, and the on and off of the contactor contact is controlled by a control module.

[0010] Furthermore, each of the power regulation modules is composed of a fuse and a power regulation element connected in series, and the on and off of the power regulation element is controlled by a control module.

[0011] Furthermore, the current specifications of the contactor module and the power regulation module include 100A, 200A and 400A.

[0012] Furthermore, the length, width and height of the contactor module or power regulation module with a current specification of 100A are 800mm, 600mm and 300mm respectively.

[0013] Furthermore, the length, width and height of the contactor module or power regulation module with a current specification of 200A are 800mm, 600mm and 600mm respectively.

[0014] Furthermore, the length, width and height of the contactor module or power regulation module with a current specification of 400A are 800mm, 600mm and 900mm respectively.

[0015] Based on the same inventive concept, the present invention also provides a method for manufacturing the electric heater power control cabinet as described above, comprising the following steps:

[0016] Determine the number of heating elements of the electric heater that require only on-off regulation and the number of heating elements that require power regulation, select a contactor module of corresponding specifications according to the specifications of each heating element that requires only on-off regulation, and select a power regulation module of corresponding specifications according to the specifications of each heating element that requires power regulation;

[0017] Arrange and combine the contactor modules and / or power regulating modules according to the sizes of the contactor modules and power regulating modules of different specifications and the size of the outlet cabinet, and install the arranged and combined contactor modules and / or power regulating modules in the outlet cabinet;

[0018] Select the corresponding specification of incoming cabinet according to the total current of all outgoing cabinets;

[0019] The incoming line cabinet is connected to each outgoing line cabinet and the heating element to complete the production of the power regulating cabinet of the electric heater.

[0020] Furthermore, during the arrangement and combination of the contactor modules and / or the power regulation modules, the total height of the contactor modules and / or the power regulation modules cannot be higher than the height of the outlet cabinet; when the total height of the arranged and combined contactor modules and / or the power regulation modules is less than the height of the outlet cabinet, the remaining space of the outlet cabinet is closed with a removable cover.

[0021] Furthermore, the installation principle of the arranged and combined contactor modules and / or power regulation modules in the outgoing line cabinet is: small-sized contactor modules and / or power regulation modules are installed on the upper part of the outgoing line cabinet body, and large-sized contactor modules and / or power regulation modules are installed on the lower part of the outgoing line cabinet body.

[0022] Beneficial effects

[0023] Compared with the prior art, the advantages of the present invention are:

[0024] The present invention provides an electric heater power regulating cabinet and a manufacturing method thereof, wherein both the contactor module and the power regulating module adopt a modular design. When the heating element and / or the process flow of the electric heater are adjusted, the number and specifications of the contactor module and / or the power regulating module can be flexibly adjusted, which can adapt to changes in actual production needs and improve the application adaptability of the power regulating cabinet. When the contactor module and / or the power regulating module fails, it is only necessary to disassemble and remove the failed module and then replace it with a spare module, which greatly reduces the maintenance cost and maintenance time. In the absence of the failed module, the rest of the power regulating cabinet can continue to operate without the need for the entire power regulating cabinet to be shut down for maintenance.

[0025] The present invention adopts a mixed use form of a contactor module and a power regulating module. The contactor module has low cost, and the cost of the power regulating cabinet is reduced while meeting the process requirements.

[0026] The power regulating cabinet of the present invention adopts the external dimensions and frame structure of the domestic standard drawer-type low-voltage switch cabinet. The dimensions of the contactor module and / or the power regulating module are adapted to the standard low-voltage switch cabinet. The existing cabinet body can be directly used without remanufacturing cabinet bodies of other external dimensions and frame structures, which facilitates the use of existing cabinet bodies for manufacturing, processing and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the arrangement of a complete set of electric heater power control cabinets in an embodiment of the present invention;

[0029] Figure 2 is an electrical schematic diagram of a contactor module in an embodiment of the present invention;

[0030] Figure 3 This is an electrical schematic diagram of a power regulation module according to an embodiment of the present invention;

[0031] FIG4( a ) is an external view of a 100A contactor module according to an embodiment of the present invention;

[0032] FIG4( b ) is an external view of a 200A contactor module according to an embodiment of the present invention;

[0033] FIG4( c ) is an external view of a 400A contactor module according to an embodiment of the present invention;

[0034] FIG5( a ) is an external view of a 100A power regulation module according to an embodiment of the present invention;

[0035] FIG5( b ) is an external view of a 200A power regulation module according to an embodiment of the present invention;

[0036] FIG5( c ) is an external view of a 400A power regulation module according to an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the layout of a single outlet cabinet in different combinations in an embodiment of the present invention.

[0038] Among them, 1-power supply bus, 2-fuse, 3-contactor contact, 4-outgoing cable, 5-power regulating element, 6-100A fuse, 7-100A contactor, 8-200A fuse, 9-200A contactor, 10-400A fuse, 11-400A contactor, 12-100A power regulating element, 13-200A power regulating element, 14-400A power regulating element, 15-busbar chamber, 16-base. DETAILED DESCRIPTION

[0039] The following is a clear and complete description of the technical solutions of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0040] The following specific embodiments are used to describe the technical solution of the present application in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0041] An embodiment of the present invention provides an electric heater power regulation cabinet, comprising an incoming cabinet and three outgoing cabinets; contactor modules and / or power regulation modules of different arrangements and combinations are detachably provided in the outgoing cabinet; the number of the contactor modules is determined by the number of heating elements of the electric heater that only require switch regulation, the contactor modules correspond one-to-one to the heating elements that only require switch regulation, and the specifications of the contactor modules are determined by the specifications of the corresponding heating elements; the number of the power regulation modules is determined by the number of heating elements of the electric heater that require power regulation, the power regulation modules correspond one-to-one to the heating elements that require power regulation, and the specifications of the power regulation modules are determined by the specifications of the corresponding heating elements; the input end of the incoming cabinet is connected to an external power supply, the output end of the incoming cabinet is respectively connected to each heating element, and the incoming cabinet is also connected to each of the outgoing cabinets; the input end of the contactor module and / or power regulation module is connected to the outgoing cabinet, and the output end of the contactor module and / or power regulation module is connected to the corresponding heating element.

[0042] For example, Figure 1 As shown in the figure, an electric heater includes 10 heating elements, of which 5 require only on-off regulation and 5 require power regulation. Of the 5 heating elements requiring only on-off regulation, 3 require 100A current, so each of these 3 elements is equipped with a 100A contactor module; 2 require 400A current, so each of these 2 elements is equipped with a 400A contactor module. Of the 5 heating elements requiring power regulation, 2 require 100A current, so each of these 2 elements is equipped with a 100A power regulation module; 2 require 200A current, so each of these 2 elements is equipped with a 200A power regulation module; 1 requires 400A current, so this heating element is equipped with a 400A power regulation module. There is a one-to-one correspondence between heating elements and modules.

[0043] In a specific embodiment of the present invention, each of the contactor modules is composed of a fuse 2 and a contactor contact 3 connected in series, and the on and off of the contactor contact 3 is controlled by a control module, such as Figure 2 shown.

[0044] In a specific embodiment of the present invention, each power regulating module is composed of a fuse 2 and a power regulating element 5 connected in series, and the on and off of the power regulating element 5 is controlled by a control module, such as Figure 3 shown.

[0045] In a specific embodiment of the present invention, the current specifications of the contactor module and the power regulation module include 100A, 200A, and 400A. For example, the 100A contactor module is composed of the contacts of 100A fuse 6 and 100A contactor 7 connected in series, as shown in Figure 4(a); the 200A contactor module is composed of the contacts of 200A fuse 8 and 200A contactor 9 connected in series, as shown in Figure 4(b); and the 400A contactor module is composed of the contacts of 400A fuse 10 and 400A contactor 11 connected in series, as shown in Figure 4(c). For example, a 100A power regulating module is composed of a 100A fuse 6 and a 100A power regulating element 12 connected in series, as shown in FIG5(a); a 200A power regulating module is composed of a 200A fuse 8 and a 200A power regulating element 13 connected in series, as shown in FIG5(b); and a 400A power regulating module is composed of a 400A fuse 10 and a 400A power regulating element 14 connected in series, as shown in FIG5(c).

[0046] The contactor module and power regulating module are both of standard withdrawable size to match the standard drawer-type low-voltage switchgear. This eliminates the need to redevelop the low-voltage switchgear, making it easy to manufacture and produce using existing cabinets. Furthermore, they can be flexibly combined within the cabinet frame. In this embodiment, the length, width, and height of the contactor module or power regulating module with a current specification of 100A are 800mm, 600mm, and 300mm respectively. Figure 4(a) and 5(a) As shown in the figure; the length, width and height of the contactor module or power regulation module with a current specification of 200A are 800mm, 600mm and 600mm respectively. Figure 4(b) and 5(b) As shown in the figure; the length, width and height of the contactor module or power regulation module with a current specification of 400A are 800mm, 600mm and 900mm respectively. Figure 4(c) and 5(c) shown.

[0047] The standard drawer-type low-voltage switchgear cabinet includes a busbar chamber 15, a base 16, and a cabinet body. The total height is 2200mm, the cabinet body height is 1800mm, the busbar chamber 15 height is 300mm, and the base 16 height is 100mm. During installation, the total height of the contactor module and / or power regulation module after arrangement and combination cannot exceed the cabinet body height. Figure 1The power regulating cabinet of an electric heater shown in the figure includes three outlet cabinets, i.e., three low-voltage switch cabinets. The power regulating cabinet includes three 100A contactor modules, two 400A contactor modules, two 100A power regulating modules, two 200A power regulating modules and one 400A power regulating module. The contactor modules and / or power regulating modules are arranged and combined according to the sizes of the contactor modules and the power regulating modules and the sizes of the outlet cabinet. The first combination is a 100A contactor module + a 200A power regulating module + a 400A contactor module, with a total height of 1800 mm, which does not exceed the height of the cabinet; the second combination is a 400A contactor module + a 400A power regulating module, with a total height of 1800 mm, which does not exceed the height of the cabinet; the third combination is a 100A contactor module + a 100A power regulating module + a 100A contactor module + a 100A power regulating module + a 200A power regulating module, with a total height of 1800 mm, which does not exceed the height of the cabinet.

[0048] The contactor and power regulation modules feature standard width, depth, and modular height, allowing for flexible module combinations within the available space. Utilizing the drawer structure and standard dimensions of existing withdrawable low-voltage switchgear, they can be quickly and tool-free withdrawn for easy on-site maintenance and replacement. The contactor and power regulation modules are installed within the outgoing cabinet as follows: Small contactor and / or power regulation modules are installed in the upper portion of the cabinet, while large contactor and / or power regulation modules are installed in the lower portion.

[0049] The input end of the incoming cabinet is connected to an external power supply, and the output end of the incoming cabinet is respectively connected to each heating element of the electric heater to provide power for each heating element; the incoming cabinet is also connected to each outgoing cabinet through a copper busbar to provide power for each outgoing cabinet; a vertical busbar is provided in the busbar chamber 15 of each outgoing cabinet; the input end of the contactor module and the power regulation module is inserted into the vertical busbar of the corresponding outgoing cabinet through the power supply busbar using a plug-in connector, and the output end of the contactor module and the power regulation module is led out using an outgoing cable.

[0050] Based on the same inventive concept, the present invention also provides a method for manufacturing the electric heater power control cabinet as described above, comprising the following steps:

[0051] Step 1: Determine the quantity and specifications of contactor modules and / or power regulation modules.

[0052] Determine the number of heating elements of the electric heater that only require switch adjustment and the number of heating elements that require power adjustment, select a contactor module of corresponding specifications according to the specifications of each heating element that only requires switch adjustment, and select a power regulation module of corresponding specifications according to the specifications of each heating element that requires power adjustment.

[0053] For heating elements that only require switch adjustment or control and do not require power regulation, choose a contactor module; for heating elements that require power regulation, choose a power regulation module.

[0054] For example, Figure 6 As shown in the figure, an electric heater includes 10 heating elements (thus requiring 10 modules), of which 5 require only on-off regulation (thus requiring 5 contactor modules) and 5 require power regulation (thus requiring 5 power regulation modules). If three of the five heating elements require only on-off regulation and a current of 100A, each of these three elements will be assigned a 100A contactor module; if two of the heating elements require a current of 400A, each of these two elements will be assigned a 400A contactor module. If two of the five heating elements require power regulation and a current of 100A, each of these two elements will be assigned a 100A power regulation module; if two of the heating elements require a current of 200A, each of these two elements will be assigned a 200A power regulation module; and if one of the heating elements requires a current of 400A, this element will be assigned a 400A power regulation module.

[0055] Step 2: Install the contactor module and / or power regulation module in the corresponding output cabinet.

[0056] According to the sizes of the contactor modules and power regulating modules of different specifications and the size of the outlet cabinet, the contactor modules and / or power regulating modules are arranged and combined, and the arranged and combined contactor modules and / or power regulating modules are installed in the outlet cabinet.

[0057] For example, Figure 1 and 6 The power control cabinet of an electric heater shown in the figure includes three outlet cabinets. Step 1 determines that the power control cabinet includes three 100A contactor modules, two 400A contactor modules, two 100A power control modules, two 200A power control modules, and one 400A power control module. The contactor modules and / or power control modules are arranged and combined based on their sizes and the size of the outlet cabinet. The first combination is a 100A contactor module + a 200A power control module + a 400A contactor module, with a total height of 1800 mm, which does not exceed the cabinet height. The second combination is a 400A contactor module + a 400A power control module, with a total height of 1800 mm, which does not exceed the cabinet height. The first combination is a 100A contactor module + a 100A power control module + a 100A contactor module + a 100A power control module + a 200A power control module, with a total height of 1800 mm, which does not exceed the cabinet height.

[0058] The installation principle of the contactor module and the power regulating module in the outgoing cabinet is as follows: the small-sized contactor module and / or the power regulating module are installed on the upper part of the outgoing cabinet, and the large-sized contactor module and / or the power regulating module are installed on the lower part of the outgoing cabinet.

[0059] The first combination is installed in the first outgoing line cabinet, the second combination is installed in the second outgoing line cabinet, and the third combination is installed in the third outgoing line cabinet. The contactor module and / or power regulation module in each combination is inserted into the vertical busbar of the corresponding outgoing line cabinet through the power supply bus using a connector. The output end of the contactor module and / or power regulation module is led out with an outgoing cable to facilitate the connection of the corresponding heating element.

[0060] Step 3: Selection of incoming cabinet: Select an incoming cabinet of corresponding specifications based on the total current of all outgoing cabinets. The incoming cabinet is the same as the fixed cabinet currently used in the market.

[0061] Step 4: Wiring

[0062] The incoming line cabinet is connected to each outgoing line cabinet and the heating element to complete the production of the power regulating cabinet of the electric heater.

[0063] The above disclosure is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or modifications within the technical scope disclosed in the present invention, and they should all be covered by the scope of protection of the present invention.

Claims

1. A method for manufacturing an electric heater power control cabinet, characterized in that: The electric heater power regulating cabinet includes an incoming line cabinet and at least one outgoing line cabinet; contactor modules and / or power regulating modules of different arrangements and combinations are detachably provided in the outgoing line cabinet; The number of the contactor modules is determined by the number of heating elements of the electric heater that only require switching adjustment. The contactor modules correspond one to one with the heating elements that only require switching adjustment. The specifications of the contactor modules are determined by the specifications of the corresponding heating elements. The number of the power regulation modules is determined by the number of heating elements of the electric heater that require power regulation. The power regulation modules correspond one to one with the heating elements that require power regulation, and the specifications of the power regulation modules are determined by the specifications of the corresponding heating elements. The input end of the incoming cabinet is connected to an external power supply, the output end of the incoming cabinet is connected to each heating element respectively, and the incoming cabinet is also connected to each outgoing cabinet; the input end of the contactor module and / or the power regulation module is connected to the outgoing cabinet, and the output end of the contactor module and / or the power regulation module is connected to the corresponding heating element; The production method comprises the following steps: Determine the number of heating elements of the electric heater that require only on-off regulation and the number of heating elements that require power regulation, select a contactor module of corresponding specifications according to the specifications of each heating element that requires only on-off regulation, and select a power regulation module of corresponding specifications according to the specifications of each heating element that requires power regulation; Arrange and combine the contactor modules and / or power regulating modules according to the sizes of the contactor modules and power regulating modules of different specifications and the size of the outlet cabinet, and install the arranged and combined contactor modules and / or power regulating modules in the outlet cabinet; Select the corresponding specification of incoming cabinet according to the total current of all outgoing cabinets; The incoming line cabinet is connected to each outgoing line cabinet and the heating element to complete the production of the power regulating cabinet of the electric heater.

2. The method for manufacturing the electric heater power control cabinet according to claim 1, characterized in that: Each of the contactor modules is composed of a fuse and a contactor contact connected in series, and the on and off of the contactor contacts are controlled by a control module.

3. The method for manufacturing the electric heater power control cabinet according to claim 1, characterized in that: Each of the power regulation modules is composed of a fuse and a power regulation element connected in series, and the on and off of the power regulation element is controlled by a control module.

4. The method for manufacturing an electric heater power control cabinet according to any one of claims 1 to 3, characterized in that: The current specifications of the contactor module and power regulation module include 100A, 200A and 400A.

5. The method for manufacturing the electric heater power control cabinet according to claim 4, characterized in that: The length, width and height of a contactor module or power regulation module with a current specification of 100A are 800mm, 600mm and 300mm respectively.

6. The method for manufacturing the electric heater power control cabinet according to claim 4, characterized in that: The length, width and height of a contactor module or power regulation module with a current specification of 200A are 800mm, 600mm and 600mm respectively.

7. The method for manufacturing the electric heater power control cabinet according to claim 4, characterized in that: The length, width and height of the contactor module or power regulation module with a current specification of 400A are 800mm, 600mm and 900mm respectively.

8. The method for manufacturing the electric heater power control cabinet according to claim 1, characterized in that: During the arrangement and combination of contactor modules and / or power regulation modules, the total height of the contactor modules and / or power regulation modules cannot be higher than the height of the outlet cabinet; when the total height of the arranged and combined contactor modules and / or power regulation modules is less than the height of the outlet cabinet, the remaining space in the outlet cabinet is closed with a removable cover.

9. The method for manufacturing the electric heater power control cabinet according to claim 1 or 8, characterized in that: The installation principles for installing the arranged and combined contactor modules and / or power regulation modules in the outlet cabinet are as follows: The small-sized contactor module and / or power regulating module is installed on the upper part of the outgoing line cabinet, and the large-sized contactor module and / or power regulating module is installed on the lower part of the outgoing line cabinet.

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