Flame state confirmation device for wire and cable combustion test

Abstract

The utility model discloses a flame state confirmation device for a wire and cable combustion test, which comprises a platform, a blowtorch assembly and a temperature measurement assembly, the blowtorch assembly comprises a blowtorch fixing seat and a flame blowtorch, a flame nozzle of the flame blowtorch is horizontally arranged, and the temperature measurement assembly comprises two temperature measurement supports arranged on the peripheral side of the blowtorch assembly and a temperature sensor; a plurality of temperature measuring openings are formed in the temperature measuring support in the inclined high-low position, the temperature measuring openings correspond to the positions of flames generated when the flame blowtorch burns, and temperature sensors used for being close to and stretching into the positions of the flames are selectively assembled on the temperature measuring openings. According to the scheme, the state of the flame used in each test can be kept consistent as far as possible, the repeatability of the result is ensured, and the state of each position of the flame can be quantified by using a temperature rise curve, so that the energy and the shape of each part of the flame can be controlled to be always kept consistent, and the purpose of using the flame in the same state in each test is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for wire and cable testing, and in particular to a flame state confirmation device for wire and cable combustion testing. Background Art

[0002] Wires and cables are an important part of power transmission and communication, and they are responsible for the transmission of electric energy and information. The quality of wires and cables directly affects the quality of power transmission and communication, and is closely related to the reliability of equipment and systems. Therefore, before leaving the factory, wires and cables need to be subjected to routine, sampling, and type tests such as electrical performance tests, thermal performance tests, single-wire vertical combustion tests, sheath mechanical performance tests, and structural dimension inspections.

[0003] In the single vertical combustion test of wires and cables, a flame torch of specified size and a specific gas source are used to burn the vertical wire and cable samples at a certain flame height and a certain flame angle. The duration and length of the burning of the wire and cable samples are used to assess their flammability and fire hazard. In this type of cable combustion test, the cable is burned with an open flame, and the overall state of the flame (including its shape, temperature, etc.) will have a great impact on the test results. The flame state is controlled by a propane flow meter to control the gas flow, determine the flame temperature and energy, and the air flow is controlled by an air flow meter to control the overall shape of the flame. But often, the overall state of the flame cannot be well confirmed.

[0004] In view of this, how to research and design a device for determining the overall state of the flame before the combustion test of the wire and cable becomes the subject to be studied and solved by the present utility model. Utility Model Content

[0005] The utility model aims to provide a flame state confirmation device for wire and cable combustion test, so as to accurately, stably and safely confirm the overall flame state before the wire and cable combustion test.

[0006] In order to achieve the above-mentioned purpose, the utility model proposes a flame state confirmation device for wire and cable combustion test, the flame state confirmation device comprises a platform, a blowtorch assembly, and a temperature measurement assembly;

[0007] The platform is equipped with a blowtorch assembly and a temperature measuring assembly;

[0008] The torch assembly comprises a torch fixing seat and a flame torch, wherein the torch fixing seat is positioned and mounted on the upper surface of the platform, the flame torch is fixedly mounted on the torch fixing seat, and the flame nozzle of the flame torch is placed horizontally;

[0009] The temperature measuring assembly includes two temperature measuring brackets and a temperature sensor set up on the periphery of the blowtorch assembly. The temperature measuring brackets and the platform together form a flame space connected to the external air, and the flame space is open at its top and at least one side. The temperature measuring brackets are provided with a plurality of temperature measuring ports at oblique high and low positions, each of which corresponds to the flame position of the flame blowtorch when burning. Each of the temperature measuring ports is selectively equipped with a temperature sensor for approaching and extending into the flame position, and the temperature sensor is placed horizontally.

[0010] The relevant contents of this utility model are explained as follows:

[0011] 1. The above technical scheme of the utility model is mainly developed and designed after research on the need to determine the overall state of the flame before the combustion test of the wire and cable. A blowtorch assembly with a blowtorch fixing seat and a flame blowtorch, a temperature measuring assembly with a temperature measuring bracket and a temperature sensor are designed, and a flame space connected to the external air is formed by the temperature measuring bracket and the platform, and the flame space is open at its top and at least one side. Each of the temperature measuring ports on the temperature measuring bracket is selectively equipped with a temperature sensor for approaching and extending into the flame position, so as to correspond to the flame position when the flame blowtorch is burning, and each temperature sensor is used to obtain the overall state of the flame. Through the setting of the device, it can be ensured that the state of the flame used in each test is as consistent as possible, and the repeatability of the results is guaranteed.

[0012] 2. In the above technical solution, the temperature measuring bracket is symmetrically arranged on the left and right sides of the blowtorch fixing base, so that the top and front and rear sides of the flame space are open, thereby providing assistance for confirming the flame state.

[0013] 3. In the above technical solution, the torch fixing seat is rotatably mounted on the platform, so that the flame torch can be rotated to confirm the flame state of the flame torch at different angles.

[0014] 4. In the above technical solution, the blowtorch fixing seat is installed on the platform through a rotating support, and the rotating support is driven to rotate by a rotating driving unit.

[0015] 5. In the above technical solution, a total of 6 temperature sensors are installed on the temperature measuring brackets located on the left and right sides.

[0016] 6. In the above technical solution, one temperature sensor is located in one of the two temperature measuring ports at the highest position of the two temperature measuring supports, four temperature sensors are located in two temperature measuring ports at the middle position of the two temperature measuring supports, and one temperature sensor is located in one of the two temperature measuring ports at the lowest position of the two temperature measuring supports. In this way, sufficient data of the flame position can be obtained for the confirmation of the flame state, and this setting will not cause conflict or interference in the arrangement of each temperature sensor, and the structure is more reasonable and scientific.

[0017] 7. In the above technical solution, the flame blowtorch includes a propane inlet pipe, an air inlet pipe, a venturi tube and a flame nozzle.

[0018] 8. In the above technical solution, the temperature measuring bracket is triangular in shape, and the top of the temperature measuring bracket is positioned and connected by a connecting rod. The triangular shape is designed to reduce the space of the flame torch blocked by the temperature measuring bracket, making it easier to observe the flame state.

[0019] 9. In this utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0020] 10. In the present utility model, the orientation or position relationship indicated by the terms "upper", "lower", "bottom", "inside", "outside", etc. is based on the orientation or position assembly relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 application.

[0021] 11. In addition, in the description of the present invention, it should be noted that if the words "first", "second" and so on are used in this document to limit components, those skilled in the art should know that the use of the words "first", "second" and so on is only for the convenience of describing the present invention and simplifying the description. If not otherwise stated, the above words have no special meaning.

[0022] Due to the application of the above scheme, the utility model has the following advantages and effects compared with the prior art:

[0023] The above scheme of the utility model is mainly developed and designed after research on the need to determine the overall state of the flame before the combustion test of the wire and cable. A blowtorch assembly with a blowtorch fixing seat and a flame blowtorch, a temperature measuring assembly with a temperature measuring bracket and a temperature sensor are designed, and a flame space connected to the external air is formed by the temperature measuring bracket and the platform, and the flame space is open at its top and at least one side. Each of the temperature measuring ports on the temperature measuring bracket is selectively equipped with a temperature sensor for approaching and extending into the flame position, so as to correspond to the flame position when the flame blowtorch is burning, and each temperature sensor is used to obtain the overall state of the flame. Through the setting of the device, it can be ensured that the state of the flame used in each test is kept as consistent as possible, and the repeatability of the result is guaranteed. The temperature rise curve can be used to quantify the state of each position of the flame, so as to control the energy and shape of each part of the flame to always remain consistent, thereby achieving the purpose of using the same state of the flame for each test. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of an embodiment of the utility model without the temperature sensor;

[0026] Figure 3 It is a rear view of an embodiment of the utility model;

[0027] Figure 4 A top view of an embodiment of the utility model;

[0028] Figure 5 This is a schematic diagram of the principle of flame status confirmation in an embodiment of the utility model;

[0029] Figure 6 It is a schematic diagram of a flame torch in an embodiment of the utility model.

[0030] The various parts of the above drawings are shown as follows:

[0031] 1. Platform;

[0032] 2. Blowtorch assembly;

[0033] 21. Blowtorch fixing seat;

[0034] 22. Flame blowtorch;

[0035] 221, propane intake pipe;

[0036] 222, air intake pipe;

[0037] 223. Venturi tube;

[0038] 224. Flame vent;

[0039] 3. Temperature measurement component;

[0040] 31. Temperature measuring bracket;

[0041] 311, temperature measuring port;

[0042] 32. Temperature sensor;

[0043] 4. Rotating support;

[0044] 5. Connecting rod. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0046] The utility model aims to accurately, stably and safely confirm the overall state of the flame before the combustion test of the wire and cable.

[0047] As attached Figures 1 to 6 As shown, the utility model discloses a flame state confirmation device for wire and cable combustion test, the flame state confirmation device comprises a platform 1, a blowtorch assembly 2, and a temperature measurement assembly 3;

[0048] The platform 1 is equipped with a blowtorch assembly 2 and a temperature measuring assembly 3;

[0049] The torch assembly 2 includes a torch fixing seat 21 and a flame torch 22. The torch fixing seat 21 is positioned and installed on the upper surface of the platform 1. The flame torch 22 is fixedly installed on the torch fixing seat 21. The flame nozzle 224 of the flame torch 22 is placed horizontally.

[0050] The temperature measuring assembly 3 includes two temperature measuring brackets 31 and a temperature sensor 32 set up on the side of the blowtorch assembly 2. The temperature measuring brackets 31 and the platform 1 together form a flame space connected to the external air, and the flame space is open at its top and at least one side; a plurality of temperature measuring ports 311 are arranged at oblique high and low positions on the temperature measuring bracket 31, and each of the temperature measuring ports 311 corresponds to the flame position when the flame blowtorch 22 is burning. Each of the temperature measuring ports 311 is selectively equipped with a temperature sensor 32 for approaching and extending into the flame position, and the temperature sensor 32 is placed horizontally.

[0051] Through the implementation of the utility model, it is mainly developed and designed after research on the need to determine the overall state of the flame before the combustion test of the wire and cable, and a blowtorch assembly 2 with a blowtorch fixing seat 21 and a flame blowtorch 22, a temperature measuring assembly 3 with a temperature measuring bracket 31 and a temperature sensor 32 are designed, and a flame space connected to the external air is formed by the temperature measuring bracket 31 and the platform 1, and the flame space is open at its top and at least one side, and each of the temperature measuring ports 311 on the temperature measuring bracket 31 is selectively equipped with a temperature sensor 32 for approaching and extending into the flame position, so as to correspond to the flame position when the flame blowtorch 22 is burning, and each temperature sensor 32 is used to obtain the overall state of the flame. Through the setting of the device, it can be ensured that the state of the flame used in each test is as consistent as possible, and the repeatability of the result is guaranteed.

[0052] In the embodiment of the utility model, the temperature measuring bracket 31 is symmetrically arranged on the left and right sides of the blowtorch fixing seat 21, so that the top and the front and rear sides of the flame space are open, thereby providing assistance for confirming the flame state.

[0053] In the embodiment of the utility model, the torch holder 21 is rotatably positioned and mounted on the platform 1. The flame torch 22 can be rotated to confirm the flame state of the flame torch 22 at different angles. Further, the torch holder 21 is mounted on the platform 1 via a rotating support 4, and the rotating support 4 is driven to rotate by a rotating drive unit.

[0054] In the embodiment of the utility model, a total of 6 temperature sensors 32 are installed on the temperature measuring brackets 31 on the left and right sides. Specifically, one temperature sensor 32 is located in one of the two temperature measuring ports 311 at the highest position on the two temperature measuring brackets 31, four temperature sensors 32 are respectively located in two temperature measuring ports 311 at the middle position of the two temperature measuring brackets 31, and one temperature sensor 32 is located in one of the two temperature measuring ports 311 at the lowest position on the two temperature measuring brackets 31. In this way, sufficient data of the flame position is obtained for the confirmation of the flame state, and this setting will not cause conflict and interference in the arrangement of each temperature sensor 32, and the structure is more reasonable and scientific.

[0055] In the embodiment of the present utility model, Figure 6 As shown, the flame torch 22 includes a propane inlet pipe 221, an air inlet pipe 222, a venturi tube 223 and a flame outlet 224. Figure 5 As shown, the flame nozzle 224 of the flame torch 22 is placed horizontally. The temperature measuring bracket 31 is triangular in shape, and the top of the temperature measuring bracket 31 is positioned and connected by a connecting rod 5. The triangular shape is designed to reduce the space of the flame torch 22 blocked by the temperature measuring bracket 31, making it easier to observe the flame state.

[0056] In actual application of the embodiment of the utility model, the schematic diagram for confirming the flame state can be seen Figure 5 By installing temperature sensors 32 in the flame core and its periphery, the overall state of the flame is observed through the temperature rise curve of each store to see if it changes. The flame used for cable burning test is parallel first and then upward. By observing the temperature rise curve of each point and the final temperature reached, its shape and energy are determined to be consistent.

[0057] Next, a more specific embodiment is used to describe the solution of the utility model in detail.

[0058] In the detailed embodiment, a flame state confirmation device for wire and cable combustion test is proposed, the flame state confirmation device comprises a platform 1, a blowtorch assembly 2, and a temperature measuring assembly 3. The blowtorch assembly 2 comprises a blowtorch fixing seat 21 and a flame blowtorch 22. The flame blowtorch 22 comprises a propane air inlet pipe 221, an air air inlet pipe 222, a venturi tube 223, and a flame outlet 224. The flame outlet 224 of the flame blowtorch 22 is placed horizontally. The temperature measuring assembly 3 comprises two temperature measuring brackets 31 and six temperature sensors 32 symmetrically arranged on the left and right sides of the blowtorch fixing seat 21. Four temperature measuring ports 311 are provided on each temperature measuring bracket 31, wherein one temperature sensor 32 is located at the highest temperature measuring port 311 on the left temperature measuring bracket 31, four temperature sensors 32 are respectively located at two temperature measuring ports 311 at the middle positions of the two temperature measuring brackets 31, and one temperature sensor 32 is located at two temperature measuring ports 311 at the lowest positions on the right temperature measuring bracket 31. The temperature measuring bracket 31 is made of a stainless steel plate, and the temperature measuring port 311 is an opening on the stainless steel plate.

[0059] A total of 6 temperature measuring points are set, namely 1 point at the center of the inner flame tip, 2 points at the left and right straight parts of the flame, 2 points at the left and right upturned parts of the flame, and 1 point at the center of the outer flame. A stainless steel plate is used as a temperature measuring bracket 31. In the initial case, after determining the position of the measuring point, a hole is opened on the stainless steel plate to be positioned as a temperature measuring port 311, and the depth of the temperature sensor 32 is determined. This is used as a basis for confirming the flame state next time, and the previous and subsequent data are compared to determine whether the flame state has changed.

[0060] In this way, the position of the temperature measuring point can be determined and the distance between the temperature measuring point and the flame can be controlled. The temperature rise curve can be used to quantify the state of each position of the flame, so as to control the energy and shape of each part of the flame to remain consistent, thereby achieving the purpose of using the same state of flame for each test.

[0061] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A flame state confirmation device for wire and cable combustion test, characterized in that: The flame state confirmation device comprises a platform (1), a blowtorch assembly (2), and a temperature measurement assembly (3); The platform (1) is equipped with a blowtorch assembly (2) and a temperature measuring assembly (3); The torch assembly (2) comprises a torch fixing seat (21) and a flame torch (22), wherein the torch fixing seat (21) is positioned and mounted on the upper surface of the platform (1), the flame torch (22) is fixedly mounted on the torch fixing seat (21), and the flame nozzle (224) of the flame torch (22) is placed horizontally; The temperature measuring assembly (3) comprises two temperature measuring brackets (31) and a temperature sensor (32) arranged on the periphery of the burner assembly (2); the temperature measuring brackets (31) and the platform (1) together form a flame space connected to the external air, and the flame space is open at its top and at least one side; a plurality of temperature measuring ports (311) are arranged at oblique high and low positions on the temperature measuring bracket (31); each of the temperature measuring ports (311) corresponds to a flame position when the flame burner (22) is burning; each of the temperature measuring ports (311) is selectively equipped with a temperature sensor (32) for approaching and extending into the flame position; and the temperature sensor (32) is placed horizontally.

2. The flame state confirmation device for wire and cable combustion test according to claim 1, characterized in that: The temperature measuring bracket (31) is symmetrically arranged on the left and right sides of the blowtorch fixing seat (21).

3. The flame state confirmation device for wire and cable combustion test according to claim 2 is characterized in that: The blowtorch fixing seat (21) is rotatably mounted on the platform (1).

4. The flame state confirmation device for wire and cable combustion test according to claim 2, characterized in that: The blowtorch fixing seat (21) is mounted on the platform (1) via a rotating support (4), and the rotating support (4) is driven to rotate by a rotating driving unit.

5. The flame state confirmation device for wire and cable combustion test according to claim 2, characterized in that: A total of six temperature sensors (32) are mounted on the temperature measuring brackets (31) located on the left and right sides.

6. The flame state confirmation device for wire and cable combustion test according to claim 5, characterized in that: One temperature sensor (32) is located at one of the two temperature measuring ports (311) at the highest position on the two temperature measuring supports (31), four temperature sensors (32) are located at two temperature measuring ports (311) at the middle position on the two temperature measuring supports (31), and one temperature sensor (32) is located at one of the two temperature measuring ports (311) at the lowest position on the two temperature measuring supports (31).

7. The flame state confirmation device for wire and cable combustion test according to any one of claims 1 to 6, characterized in that: The flame torch (22) comprises a propane air inlet pipe (221), an air inlet pipe (222), a venturi tube (223) and a flame outlet (224).

8. The flame state confirmation device for wire and cable combustion test according to claim 7, characterized in that: The temperature measuring bracket (31) is triangular in shape, and the top of the temperature measuring bracket (31) is positioned and connected via a connecting rod (5).

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