CN201221985Y

CN201221985Y - Vibration-resistance thermoelectric couple

Info

Publication number: CN201221985Y
Application number: CNU2008200376113U
Authority: CN
Inventors: 陆洪波; 陆振岳; 成涛
Original assignee: Shanghai Meishan Iron and Steel Co Ltd
Current assignee: Shanghai Meishan Iron and Steel Co Ltd
Priority date: 2008-06-26
Filing date: 2008-06-26
Publication date: 2009-04-15
Anticipated expiration: 2018-06-26

Abstract

The utility model relates to an anti-vibration thermocouple belonging to the sensing temperature measurer technical field, which comprises a protective sleeve connected with a ceramic base, wherein the ceramic base is fixedly connected with a temperature measuring element inserted in the protective sleeve, the outer circle of the temperature measuring element is fixedly connected with a spindle shaped vibration preventing spring, and the outer diameter of the spindle shaped vibration preventing spring is matched with the inner diameter of the protective sleeve. The utility model is simple in manufacture and convenient in usage, and due to convenience of mounting and replacement of the temperature measuring element, severe rocking of the temperature measuring element in the protective sleeve can be avoided, and lead-break of hard links which is easily caused by vibration is effectively prevented.

Description

The antivibration thermopair

Technical field

The utility model relates to a kind of thermopair, and especially a kind of antivibration thermopair belongs to sensing thermometric device technical field.

Background technology

Thermopair (resistance) is when the thermometric of the bigger place of vibration, because temperature element vibration meeting along with point for measuring temperature in sleeve pipe is rocked as pendulum, and the element extension line adopts screw to be connected firmly with binding post, therefore cause the neat root fracture of temperature element extension line easily, cause the thermometric fault, and the failure rate height.When vibration when violent, because the porcelain base also is connected by fixed screw firmly with protective casing terminal box base, so temperature element acutely rocks and porcelain base relative fixed is motionless, causes the porcelain base to shatter easily.

Usually adopt asbestos rope to be wrapped in and prevent on the element that element from rocking.The shortcoming of this mode is that temperature element (TE) is changed difficulty, complex operation, and poor reliability, the more open fragility of asbestos rope, in use easy loose coming off owing to adopted thermal insulation material to come antivibration, makes the temperature hysteresis increasing simultaneously.

The utility model content

The purpose of this utility model is: the problem at above-mentioned prior art exists, a kind of antivibration thermopair by the spring energy-absorbing is proposed, and in protective casing, rock the various faults that cause thereby overcome temperature element (TE), effectively prolong the life-span of temperature element (TE).

In order to reach above purpose, antivibration thermopair of the present utility model contains the protective casing that is connected with the porcelain base, described porcelain base is connected with the temperature element that is inserted in the protective casing, and its improvements are that the cylindrical of described temperature element is fixed with the spindle shock-proof spring; The maximum outside diameter of described spindle shock-proof spring and the internal diameter of described protective casing match.

The utility model further improves; described protective casing is shaped on threaded hole, and described porcelain base is shaped on perforation, and connecting screw is with the base retainer spring near an end of screw terminal; pass the threaded hole that perforation on the porcelain base is screwed in protective casing away from an end of screw terminal, realize that elasticity connects.

For utility model is further perfect be, the binding post on the described porcelain base is drawn elastic conducting strip, and the extension line of described temperature element is electrically connected with elastic conducting strip.

Be not difficult to find out that the utility model is made simple, easy to use, and has following characteristics:

1): it is convenient to adopt fusiform spring both to guarantee that temperature element was installed and changed, and relatively temperature element is positioned at protective casing again, has avoided temperature element acutely to rock in protective casing because of vibration;

2): the temperature element extension line is connected with binding post and has adopted the elasticity electrical connection, has prevented the phenomenon that hard connection makes lead-in wire fracture because of vibration easily effectively;

3): adopt elasticity to be connected between porcelain base and the protective casing, porcelain base and temperature element, element extension line and binding post are synchronized with the movement, prevented that effectively porcelain base and component lead from rupturing because of rocking.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the structural representation of an embodiment of the utility model.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the vertical view of Fig. 1.

Fig. 4 is the partial enlarged drawing at binding post position among Fig. 1.

Fig. 5 is the side view of Fig. 4.

Among the above figure: 1-porcelain base, 2-base fixation kit, 3-connecting screw, 4-post assembly, 5-temperature element, 6-shock-proof spring, 7-shock-proof spring folder, 8-base retaining thread hole, 9-base retainer spring, 10-connecting screw, 11-temperature element extension line, 12-sleeve pipe, 13-phosphorus bronze sheet, 14-press tongue, 15-binding post fixed screw, 16-binding post, 17-copper cap, 18-lead.

Embodiment

Embodiment one

The vibrationproof thermopair of present embodiment such as Fig. 1, Fig. 2, shown in Figure 3 contain the protective casing 12 that is connected with porcelain base 1.Porcelain base 1 is connected with the temperature element 5 that is inserted in the protective casing 12.The cylindrical of temperature element 5 is fixed with two fusiform shock-proof springs 6 up and down by shock-proof spring folder 7.The internal diameter of the maximum outside diameter of spindle shock-proof spring 6 and protective casing 12 matches.The terminal box base of protective casing 12 is shaped on threaded hole 8; porcelain base 1 correspondence position is shaped on perforation; connecting screw 10 is with base retainer spring 9 near an end of screw terminals, and the perforation of passing on the porcelain base 1 away from an end of screw terminal is screwed in the threaded hole 8 of protective casing 12, realizes that elasticity connects.Two binding posts 16 on the porcelain base 1 are by copper cap 17 and

inner pressure tongue

14 and 15 actings in conjunction of binding post fixed screw thereof, and clamping lead 18 and phosphorus bronze sheet 13 make it to be electrically connected, and a side of phosphorus bronze sheet 13 upwarps, and is electrically connected with the extension line 11 of temperature element.

Its antivibration principle is to utilize shock-proof spring 6 to absorb the energy of vibration, avoids temperature element 5 acutely to rock in protective casing, the simultaneously also relatively stable position of temperature element 5 in protective casing.And temperature element is pressed on the terminal box base of protective casing by the pressure of base retainer spring 9; make original porcelain base 1 and hard connection of protective casing 12 terminal box bases become the elasticity connection; when temperature element 5 rocks; porcelain base 1 can be followed its motion by a small margin together; prevented that porcelain base 1 from being shattered; because porcelain base 1 is almost done motion by a small margin synchronously with temperature element 5; also be synchronized with the movement so guaranteed temperature element extension line 11 and post assembly, guaranteed that temperature element extension line 11 is difficult for being fractureed.Temperature element extension line 11 is electrically connected with phosphorus bronze sheet 13 in the post assembly, can absorb the energy of a part of transverse vibration by the elastic reaction of phosphorus bronze sheet, has overcome original hard the connection and defective that the lead-in wire that causes cuts off because of vibration.

This thermocouple (resistance) element is applicable to the easy generation fluid turbulence such as flue, water pipe and makes Become the place of pipe vibration and the place (such as boiler, steam turbine etc.) that can produce than strong vibration to make With, its resistance to shock is good, and installs, changes conveniently.

Claims

1. an antivibration thermopair contains the protective casing that is connected with the porcelain base, and described porcelain base is connected with the temperature element that is inserted in the protective casing, it is characterized in that the cylindrical of described temperature element is fixed with the spindle shock-proof spring; The maximum outside diameter of described spindle shock-proof spring and the internal diameter of described protective casing match.

2. according to the described antivibration thermopair of claim 1; it is characterized in that: described protective casing is shaped on threaded hole; described porcelain base is shaped on perforation; connecting screw is with the base retainer spring near an end of screw terminal; pass the threaded hole that perforation on the porcelain base is screwed in protective casing away from an end of screw terminal, realize that elasticity connects.

3. according to the described antivibration thermopair of claim 2, it is characterized in that: the binding post on the described porcelain base is drawn elastic conducting strip, and the extension line of described temperature element is electrically connected with elastic conducting strip.

4. according to the described antivibration thermopair of claim 3, it is characterized in that: the binding post on the described porcelain base is by copper cap and inner pressure tongue and the acting in conjunction of binding post fixed screw thereof, and clamping lead and as the phosphorus bronze sheet of elastic conducting strip makes it electrical connection.

5. according to the described antivibration thermopair of claim 4, it is characterized in that: a side of described phosphorus bronze sheet upwarps, and is electrically connected with the extension line of temperature element.