Wiring board capable of preventing pulling of platinum-rhodium wire

Abstract

The utility model belongs to the technical field of thermocouples, and particularly discloses a wiring board capable of preventing a platinum-rhodium wire from being pulled, which comprises a wiring board body and a plurality of groups of binding posts arranged on the wiring board body, each binding post is provided with a first threaded hole, the first threaded hole is internally in threaded connection with a first threaded piece, and a second threaded piece is arranged in the wiring board body. An L-shaped gasket is arranged between the first threaded piece and the binding post, the two sides of the L-shaped gasket are located on the two adjacent sides of the binding post respectively, the L-shaped gasket is provided with a through hole used for allowing the first threaded piece to pass through, and the through hole is right opposite to the first threaded hole. The L-shaped gasket is adopted, when the first threaded piece is rotated, the L-shaped gasket cannot rotate, the pulling situation during platinum-rhodium wire assembling can be effectively prevented, and it is guaranteed that the platinum-rhodium wire is intact.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermocouples, and in particular relates to a terminal block capable of preventing platinum-rhodium wires from being pulled. Background Art

[0002] Platinum-rhodium thermocouples are also known as high-temperature precious metal thermocouples. Platinum-rhodium thermocouples are divided into single platinum-rhodium and double platinum-rhodium. As temperature measurement sensors, they are usually used in conjunction with temperature transmitters, regulators and display instruments to form process control systems. They are used to directly measure or control the temperature of fluids, steam and gas media and solid surfaces within the range of 0-1700℃ in various production processes.

[0003] The terminal block of a platinum-rhodium thermocouple is equipped with a certain number of terminal posts, each with a threaded hole. Screws pass through round washers and thread into the threaded holes. Tightening the screws crimps the platinum-rhodium wire. Tightening the screws can pull on the wire, causing it to expand and contract during temperature measurements, potentially damaging it. Utility Model Content

[0004] The purpose of the utility model is to provide a terminal block that prevents the platinum-rhodium wire from being pulled. The platinum-rhodium wire is crimped by a flat pad, which causes the platinum-rhodium wire to be pulled during the process of tightening the screws, resulting in damage to the platinum-rhodium wire when the platinum-rhodium wire expands and contracts due to heat and cold during subsequent temperature measurement.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a terminal block for preventing platinum-rhodium wire from being pulled, comprising a terminal block body and a plurality of groups of terminal posts arranged on the terminal block body, the terminal post being provided with a first threaded hole, a first threaded member being threadedly connected to the first threaded hole, an L-shaped gasket being provided between the first threaded member and the terminal post, the two sides of the L-shaped gasket being respectively located on the adjacent two sides of the terminal post, the L-shaped gasket being provided with a through hole for passing the first threaded member, and the through hole being directly opposite to the first threaded hole.

[0006] Furthermore, the first threaded hole is arranged on the circumference of the terminal, a second threaded hole is provided between the upper and lower sides of the terminal, a third threaded hole corresponding to the second threaded hole is provided on the terminal block body, and a second threaded member is threadedly connected to the second threaded hole and the third threaded hole, and the second threaded member fixes the terminal to the terminal block body.

[0007] Furthermore, the first threaded holes are provided on both sides of the terminal that are adjacent to each other in the circumferential direction.

[0008] Furthermore, a circumferential surface of the terminal is an inclined surface, and the inclined surface is inclined outward from top to bottom, and one of the first threaded holes is installed on the inclined surface.

[0009] Furthermore, a first wire outlet hole is provided on the terminal block body.

[0010] Furthermore, a second wire outlet hole is provided between the upper side and the lower side of the terminal post, and a third wire outlet hole is provided on the terminal block body, facing the second wire outlet hole.

[0011] Furthermore, a fixing hole is provided on the terminal block body, and the fixing piece passes through the fixing hole and is connected to the terminal box.

[0012] The beneficial effect of this technical solution is that: this technical solution replaces the original flat washer with an L-shaped washer. When the first threaded part is rotated, the L-shaped washer will not rotate, which can effectively prevent pulling when assembling the platinum-rhodium wire and ensure the integrity of the platinum-rhodium wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of a terminal block for preventing platinum-rhodium wire from being pulled in Example 1 of the present utility model;

[0014] Figure 2 for Figure 1 A top view of

[0015] Figure 3 It is a structural diagram of embodiments 2 and 3;

[0016] Figure 4 This is a structural diagram of Example 4. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The reference numerals in the drawings of the specification include: terminal block body 1, terminal post 2, fixing hole 3, first threaded member 4, L-shaped gasket 5, second threaded member 6, first outlet hole 7, second outlet hole 8, inclined surface 9, first threaded hole 10.

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1

[0021] Basically as attached Figure 1 、 2A terminal block for preventing platinum-rhodium wire from being pulled is shown. The terminal block comprises a terminal block body 1 and multiple sets of terminal posts 2 disposed on the terminal block body 1. The terminal posts 2 are provided with first threaded holes 10, into which first threaded members 4 are threadedly connected. An L-shaped gasket 5 is disposed between the first threaded member 4 and the terminal posts 2. The L-shaped gasket 5 has two adjacent sides located on either side of the terminal post 2. The L-shaped gasket 5 has through-holes for receiving the first threaded member 4, which are aligned with the first threaded holes 10. The first threaded holes 10 are disposed circumferentially around the terminal posts 2. A second threaded hole is disposed between the upper and lower sides of the terminal post 2. The terminal block body 1 has a third threaded hole corresponding to the second threaded hole. Second threaded members 6 are threadedly connected to the second and third threaded holes, securing the terminal posts 2 to the terminal block body 1. Fixing holes 3 are provided on both sides of the terminal block body 1. Fixing members pass through the fixing holes 3 and are connected to the terminal box. The first threaded member 4, the second threaded member 6, and the fixing member are all screws. A second wire outlet hole 8 is provided between the upper side and the lower side of each terminal 2 , and a third wire outlet hole directly facing the second wire outlet hole 8 is provided on the terminal block body 1 .

[0022] By using the L-shaped gasket 5, when the first screw member 4 is rotated, the L-shaped gasket 5 will not rotate, which can effectively prevent the pulling of the platinum-rhodium wire during assembly and ensure the integrity of the platinum-rhodium wire.

[0023] Example 2

[0024] like Figure 3 As shown, the only difference between this embodiment and the first embodiment is that first threaded holes 10 are provided on both sides of the terminal 2 that are adjacent to each other in the circumferential direction, that is, first threaded parts 4 are connected to both sides of the terminal 2 that are adjacent to each other in the circumferential direction, and of course, an L-shaped gasket 5 is provided between each first threaded part 4 and the terminal 2.

[0025] Example 3

[0026] like Figure 3 As shown, the only difference between this embodiment and the second embodiment is that one circumferential surface of the terminal 2 is an inclined surface 9 , which is inclined outward from top to bottom, and one of the first threaded holes 10 is installed on the inclined surface 9 .

[0027] Example 4

[0028] like Figure 4 As shown, the only difference between this embodiment and the first embodiment is that the second outlet hole 8 and the third outlet hole are not provided in this embodiment, but the first outlet hole 7 is provided in the center of the wiring board body 1.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] The above is only an embodiment of the present utility model. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A terminal block for preventing platinum-rhodium wire from being pulled, characterized by: The invention comprises a terminal block body (1) and a plurality of terminal posts (2) arranged on the terminal block body (1), wherein the terminal posts (2) are provided with a first threaded hole (10), the first threaded hole (10) is internally threadedly connected to a first threaded member (4), an L-shaped gasket (5) is provided between the first threaded member (4) and the terminal posts (2), the two sides of the L-shaped gasket (5) are respectively located on two adjacent sides of the terminal posts (2), the L-shaped gasket (5) is provided with a through hole for passing the first threaded member (4), and the through hole is directly opposite to the first threaded hole (10).

2. A terminal block for preventing platinum-rhodium wire from being pulled according to claim 1, characterized in that: The first threaded hole (10) is arranged on the circumference of the terminal (2), a second threaded hole is provided between the upper side and the lower side of the terminal (2), a third threaded hole corresponding to the second threaded hole is provided on the terminal block body (1), a second threaded member (6) is threadedly connected to the second threaded hole and the third threaded hole, and the second threaded member (6) fixes the terminal (2) on the terminal block body (1).

3. A terminal block for preventing platinum-rhodium wire from being pulled according to claim 2, characterized in that: The first threaded holes (10) are provided on both sides of the terminal post (2) adjacent to each other in the circumferential direction.

4. A terminal block for preventing platinum-rhodium wire from being pulled according to claim 3, characterized in that: A circumferential surface of the terminal (2) is a slope (9), and the slope (9) is inclined outward from top to bottom, and one of the first threaded holes (10) is mounted on the slope (9).

5. The terminal block for preventing platinum-rhodium wire from being pulled according to claim 1, characterized in that: The wiring board body (1) is provided with a first wire outlet hole (7).

6. The terminal block for preventing platinum-rhodium wire from being pulled according to claim 1, characterized in that: A second wire outlet hole (8) is provided between the upper side and the lower side of the terminal post (2), and a third wire outlet hole directly facing the second wire outlet hole (8) is provided on the terminal block body (1).

7. The terminal block for preventing platinum-rhodium wire from being pulled according to claim 1, characterized in that: The terminal block body (1) is provided with a fixing hole (3), and the fixing piece is connected to the terminal box after passing through the fixing hole (3).

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