CN201508242U

CN201508242U - Temperature sensor

Info

Publication number: CN201508242U
Application number: CN2009200394347U
Authority: CN
Inventors: 黄兴发; 何可人
Original assignee: CHANGZHOU QINGLIANG INSTRUMENT Co Ltd; Jiangsu Polytechnic University
Current assignee: CHANGZHOU QINGLIANG INSTRUMENT Co Ltd; Jiangsu University; Jiangsu Polytechnic University
Priority date: 2009-04-14
Filing date: 2009-04-14
Publication date: 2010-06-16
Anticipated expiration: 2019-04-14

Abstract

The utility model discloses a temperature sensor, wherein a temperature sensing element is connected on an electrician holder in a connection box holder from outside, a box cover is fixed on the connection box holder, a packing ring is arranged between the box cover and the connection box holder, thread fixing connection is adopted, the temperature sensing element is connected with the connection box holder through a spring pipe and is provided with a sealing plug on the connection part between the spring pipe and the connection box holder, and a sealing plug is arranged on a line conductor lead-in end of the connection box holder. The box cover and the connection box cover of the utility model adopt thread connection, which is convenient for installation and repair, the packing ring is clamped in two semi-circular slots of the box cover and the connection box holder, can not be moved or displaced in sealing, and has excellent sealing effect. The semi-circular slots on the box cover are matched with screws on the connection box holder and can prevent explosion and prevent the box cover from rotating reversely, the rubber sealing plug is used to fix and seal a cable leading wire, thereby the protective grade of the outer shell of the temperature sensor can reach the demands of IP55, and accords with national standards of JB/T8622-1997, and the measuring reliability is excellent.

Description

Temperature sensor

Technical field

The utility model belongs to temperature measuring instrument, is specifically related to the motor platinum resistance sensor.

Background technology

The structure of existing temperature sensor is: temperature-sensing element is connected into junction box seat by the stainless steel spring pipe, at junction box seat internal fixation electrician seat, on junction box seat, connect lid, junction box seat adopts no engage thread to be connected with lid, with four screws junction box seat and lid are riveted tightly, screw adopts four angle plane types, the defective of this structure is: operate very cumbersome, these four screw-drivings manpower but also time-consuming had not only been consumed, and the installation nut of junction box seat and lid brings sizable inconvenience for installation and inspection operation on same plane.

Summary of the invention

The purpose of this utility model is for overcoming the deficiencies in the prior art, provides a kind of easy and simple to handle and be applicable to safe and reliable temperature sensor under high humidity and the dust atmosphere bad working environments condition.

For achieving the above object, the technical solution adopted in the utility model is: on temperature-sensing element was connected to electrician's seat in the junction box seat from the outside, fixing lid on junction box seat was provided with O-ring seal and adopts screw thread to fixedly connected between lid and junction box seat; Temperature-sensing element is connected with junction box seat by bourdon tube and in the junction of bourdon tube and junction box seat sealing-plug is set, and at the lead leading-in end of junction box seat sealing-plug is set.

Be respectively equipped with semi-circular groove in the junction of lid and junction box seat, described O-ring seal lock ring is in these two semi-circular grooves; On lid, establish a semi-circular groove that is used for mounting screw.

The beneficial effects of the utility model are:

1, lid adopts with junction box seat and is threaded, the convenient installation and maintenance.

2, the O-ring seal lock ring can not move dislocation, good sealing effect during sealing in two half slots of lid and junction box seat.

3, semi-circular groove on the lid and the screw on the junction box seat are supporting can explosion-proof and anti-lid counter-rotating.

4, rubber seal plug is the cable tail fixing seal, thereby makes the degree of protection of temperature sensor shell reach the requirement of IP55, meets the JB/T8622-1997 national standard, measures good reliability.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Fig. 1 the utility model structural representation;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is an A broken section enlarged diagram among Fig. 1;

Fig. 4 is the local enlarged diagram of B among Fig. 1;

Fig. 5 is the front view of lid 1 among Fig. 2;

Fig. 6 is that partial sectional view is looked on the left side of Fig. 5.

Among the figure: 1. lid; 2. O-ring seal; 3. semi-circular groove; 4. junction box seat; 5. electrician's seat; 6. sealing-plug; 7. packing ring; 8. bourdon tube; 9. temperature-sensing element; 10. screw; 11. semi-circular groove; 12. sealing-plug; 13. packing ring; 14. gland nut.

Embodiment

As depicted in figs. 1 and 2, temperature-sensing element 9 is connected to electrician's seat 5 in the junction box seat 4 from the outside by stainless steel spring pipe 8 on, fixing lid 1 on junction box seat 4.Junction at bourdon tube 8 and junction box seat 4 is provided with rubber seal plug 6 and packing ring 7.Cable conductor leading-in end at junction box seat 4 is provided with rubber seal plug 12, packing ring 13 and gland nut 14, can improve the sealing effectiveness of lead.

Shown in Fig. 3-6, lid 1 adopts screw thread to fixedly connected with junction box seat 4, be respectively equipped with semi-circular groove 3 on the junction of lid 1 and junction box seat 4, O type rubber seal 2 lock rings are connected in these two the semi-circular grooves 3 mutually, and O type rubber seal 2 is not misplaced when sealing.

Establish a semi-circular groove 11 that is used for mounting screw 10 on lid 1, lid 1 and junction box seat 4 are tightened, semi-circular groove 11 just is screwed to the position of screw 10, screw 10 is twisted, block lid 1, lid 1 can not be rotated, reach the effect of explosion-proof and anti-lid counter-rotating.

Claims

1. temperature sensor, temperature-sensing element (9) is connected on the interior electrician's seat (5) of junction box seat (4) from the outside, go up fixedly lid (1) at junction box seat (4), it is characterized in that: between lid (1) and junction box seat (4), be provided with O-ring seal (2) and the employing screw thread is fixedlyed connected; Temperature-sensing element (9) is connected with junction box seat (4) by bourdon tube (8) and in the junction of bourdon tube (8) and junction box seat (4) sealing-plug (6) is set, and at the lead leading-in end of junction box seat (4) another sealing-plug (12) is set.

2. temperature sensor according to claim 1 is characterized in that: the junction at lid (1) and junction box seat (4) is respectively equipped with semi-circular groove (3), and described O-ring seal (2) lock ring is in these two semi-circular grooves (3); On lid (1), establish a semi-circular groove (11) that is used for mounting screw (10).