CN2265532Y

CN2265532Y - Electrode device for steam manifold electric contact fluviograph measuring cylinder

Info

Publication number: CN2265532Y
Application number: CN 95240748
Authority: CN
Inventors: 高维信
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-26
Filing date: 1995-10-26
Publication date: 1997-10-22
Anticipated expiration: 2005-10-26

Abstract

The utility model relates to an electrode device which is a sensing member for the steam manifold water gauge measuring cylinder of a high temperature and superhigh pressure boiler, belonging to the technical field of the thermal measurement. The electrode device comprises a sealing ring function chamber which is composed of an electrode shoulder plate, a flexible sealing packing ring, a gasket, a pressure cover and a fixed seat. When a water gauge is operated for measure, the electrode shoulder plate is pressed by medium pressure, and then the flexible sealing packing ring is pressed intensively by the medium pressure to further deform the flexible sealing packing ring, so that the self-sealing of the medium pressure can be realized. Compared with the original electrode devices, the utility model not only has improved sealing degree but also has the advantages of convenient maintenance and disassembly and low maintenance cost.

Description

The drum electric contact point fluviograph is measured the tube electrode assembly

The utility model relates to the thermal measurement technical field, is the important sensing element of high temperature, hyperpressure container water level instrumentation graduated cylinder.

The drum of high temperature, hyperpressure boiler, its liquid level is now generally measured with electric contact point fluviograph, and electrode assembly plays crucial effects as the sensor of water level gauge in measuring process.The existing electrode assembly of tube of measuring is mainly by being welded in the holder of measuring on the cylindrical shell, and dress electrode and red copper flat shim within it formed (seeing accompanying drawing 1), interconnect with screw thread with holder and electrode, between the two with the red copper flat shim firmly by the sealing, to prevent the leakage of measuring media.But install because electrode assembly is a level, the electrode axle center of red copper flat shim is difficult for overlapping in installation, and after tightening electrode, the pad holding capacity is inhomogeneous, and seal degree is variant; Red copper flat shim such as annealing do not conform to quality requirements in addition, can influence sealing effectiveness yet.In addition in use, electrode is subjected to the pressure medium effect to outer displacement, makes pad bear extruding force and reduces, reduced tightness.Serious leakage not only can damage holder, electrode, also will influence the precision of measuring sampling, causes that contact conductor insulation against ground decline causes the demonstration of water level gauge mistake, false alarm, even causes heat power equipment stoppage in transit accident, and produce very big economic loss.

The utility model has proposed a kind of new drum electric contact point fluviograph and has measured the tube electrode assembly, to reach the purpose that improves tightness between electrode and the holder at the problems referred to above.

For technical characterictic of the present utility model is described, now provide two accompanying drawings:

Accompanying drawing 1 is existing electrode assembly structural representation

Accompanying drawing 2 is a structural representation of the present utility model

Among the figure: 1 is that measurement barrel, 2 is that holder, 3 is that electrode, 4 is that flexible gasket ring, 5 is that liner, 6 is that gland, 7 is that end socket, 8 is that insulating sleeve, 9 is an electrode shoulder dish.

From shown in Fig. 1 and 2 contrast as seen, the utility model is except including electrode 3, holder 2, end socket 7, insulation sleeve 8, its technical characteristics is that it also is provided with a ring packing letter chamber especially, this letter chamber is by the electrode shoulder dish 9 that is positioned at holder 2 inner chambers, and flexible gasket ring 4, liner 5, gland 6 consist of. Electrode shoulder dish 9 is outside electrode body, be integrated with electrode body, the seat end internal chamber wall of one side and holder 2 matches and is right after, the another side is close in turn and is closed flexible gasket ring 4, liner 5, gland 6, and gland screws in the inwall at holder, and its end is pressed on again on 5 of the liners.

The utility model embodiment:

According to technical characterictic of the present utility model, assemble this electrode assembly according to Fig. 2, wherein the optional soft graphite airtight and watertight padding of flexible gasket ring ring, during use, in measuring tube, be full of medium, after pressure increases, medium enters the gap of electrode shoulder dish and holder bottom surface, the outer garden of telegram shoulder dish area is the electrode pressure-bearing surface, and its acting force is very big, and concentrates extruding flexible gasket ring, make it further distortion, realize the self-tightening sealing of pressure medium, pressure medium is bigger, and sealing is tighter.

The utility model is owing to designed ring packing letter chamber reasonable idea, so produced good sealing effectiveness. And adopt the flexible gasket ring, and having more high temperature resistant, acid and alkali-resistance and resilience is good, safe-working pressure is big, long service life seals the characteristics such as reliable. In addition, the utility model is convenient to safeguard convenient disassembly, the advantage that maintenance cost is low in addition.

Claims

1, a kind of drum electric contact point fluviograph that includes electrode 3, holder 2, end socket 7, insulating sleeve 8 is measured the tube electrode assembly, it is characterized in that: it is also ad hoc the annular letter of a sealing chamber, this letter chamber is made of the electrode shoulder dish 9, flexible gasket ring 4, liner 5, the gland 6 that are positioned at holder 2 inner chambers, electrode shoulder dish 9 outside electrode body with electrode body be one, the base intracavity wall kissing of one side and holder 2 connects, opposite side is close in turn and is closed flexible gasket ring 4, liner 5, gland 6, gland 6 screws in the holder 2, and the end is pressed on the liner 5.

2, drum electric contact point fluviograph according to claim 1 is measured the tube electrode assembly, it is characterized in that flexible gasket ring 4 is soft graphite airtight and watertight padding ring.