CN2100614U - Insertion depth adjustable temp.-measuring element - Google Patents

Abstract

The utility model relates to an insertion depth adjustable temperature measuring element which is used for the temperature measurement in hot control systems. The utility model is mainly composed of an anti-loosing spring washer which is arranged between a clamping chuck and a thread sleeve in a wiring head, a fixing head is composed of an upper pressing sleeve, a clamping ring, a middle pressing sleeve, an inner pressing sleeve, a sealing member, a joint sleeve and a sealing gasket, and the traditional sealing and fixing form is changed. Compared with the traditional element, the utility model has the advantage than the sealing performance and the reliable operation performance are increased.

Description

Insertion depth adjustable temp.-measuring element

The utility model relates to a kind of temperature element, is used for the temperature survey of heat control system.

CW2 series temperature element is a kind of slotting dark adjustable temperature element of using always, and its structure as shown in Figure 1.Whole device is made up of fixed head 1, connector lug 2 and temperature element bar 6, and chuck 3 in the connector lug and swivel nut 4 are in order to be fixed together element bar and connector lug, and the O type rubber seal 5 of fixed head inside is used to prevent the profit seepage.In use, this device exists following weak point:

1, because no locking measure between chuck 3 and the swivel nut 4 in use can cause swivel nut 4 loosening withdrawing from because of the vibrations of equipment, connector lug is loosening to cause inner wire breaking thereby make, thereby temperature element was lost efficacy, and causes damage to production.

2, O-ring seal 5 is aging easily, facts have proved, this device general use after 3～5 months in stress-free oil-water system just has the element about 90% to cause the profit seepage because of O-ring seal is aging, in oil, water system, use, not only influence normal working state of system, and easily cause the hidden danger of fire etc., directly threaten safety in production.

The purpose of this utility model just is to overcome above-mentioned weak point of the prior art, provides reliable, the grease proofing seepage mode of a kind of element bar and connector lug fixed form to insert dark adjustable temperature element reliably.

The purpose of this utility model reaches by following measures: lay a locking spring washer between chuck in connector lug and the swivel nut; Fixed head is made up of last gland, collar, middle gland, interior gland, seal, interface cover, gasket seal, and threaded engagement is made in the lower end of last gland and the upper end of middle gland, places collar between them.Threaded engagement is made in the upper end of the lower end of middle gland and interface cover, gland in placing between them, and between gland and interface overlapped in seal was placed on, gasket seal was positioned at the tight below of interface cover, and above-mentioned each part all is placed on the element bar.

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

Laid a locking spring washer 7 between chuck 3 in connector lug 2 and the swivel nut 4.Thereby make the fixing of connector lug and element bar 6 can not get loose because of the vibrations of equipment; Fixed head 1 is by last gland 8, collar 9, middle gland 10, interior gland 11, seal 12, interface cover 13, gasket seal 14 is formed, the upper end band external thread of middle gland, lower end band internal thread, threaded engagement is made in tapped upper end of going up gland and middle gland, lower end, place collar 9 between the two, the lower end of middle gland and interface cover have externally threaded upper end and make threaded engagement, gland in placing between them, between gland and interface overlapped in the seal 12 of resilient material system was placed on, gasket seal is positioned at the tight below of interface cover, and above-mentioned each part all is placed on the element bar 6.During use, at first adopt the mode of welding or thread connection that the lower end that interface overlaps is fixed on the installation site, aligned the measurement insertion depth of element bar 6, gland 10 in tightening forces interior gland 11 to compress seal 12 to reach the purpose that prevents the profit seepage thereby make.Tighten gland 8 then, thereby last gland is fixed on the fixed head 1 element bar 6 by compressing collar 9 firmly.

Fig. 1 is the prior art structural drawing.

Fig. 2 is a structural drawing of the present utility model.

Compared with prior art, the utlity model has following advantage:

1, owing to adopted locking spring washer 7, element bar and connector lug are fixed, have improved the functional reliability of element.

2, adopted seal to fasten grease proofing seepage structure, grease proofing seepage performance improves greatly, experiment showed, that element that the utility model provides can work under 9.8MPa pressure for a long time and do not have profit seepage phenomenon.

Claims (1)

1, a kind of slotting dark adjustable temperature element is made up of fixed head 1, connector lug 2 and element bar 6, it is characterized by:

(1) a locking spring washer 6 is arranged between chuck 3 in the connector lug 2 and the swivel nut 4;

(2) fixed head 1 is made up of last gland 8, collar 9, middle gland 10, interior gland 11, seal 12, interface cover 13, gasket seal 14, threaded engagement is made in the lower end of last gland and the upper end of middle gland, the lower end of collar 9, middle gland and the upper end of interface cover are set between them make threaded engagement, gland in placing between them, between gland and interface overlapped in seal 12 was placed on, gasket seal is positioned at the tight below of interface cover, and above-mentioned each part all is placed on the element bar.

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