The syndeton of drawing lead of condenser type low temperature liquid level gauge
Technical field
The present invention relates to employed condenser type low temperature liquid level gauge in the Cryo Heat Insulation bottle that stores liquid oxygen, liquefied natural gas, refer more particularly to the syndeton of drawing lead of condenser type low temperature liquid level gauge.
Background technology
Condenser type low temperature liquid level gauge usually and the supporting use of Cryo Heat Insulation bottle is stored in the liquid level of the cryogenic liquids such as liquid oxygen, liquid nitrogen, liquid argon or liquefied natural gas in the Cryo Heat Insulation bottle in order to detection.Because the singularity that the Cryo Heat Insulation bottle is made; And the singularity of the liquid gas of adorning; Require liquid level gauge must have high reliability, otherwise in case break down dewar bottle---can't normally use like vehicle-mounted liquefied natural gas bottle; And possibly keep in repair it hardly, can cause scrapping of Cryo Heat Insulation bottle thus.
At present; The syndeton of drawing lead of condenser type low temperature liquid level gauge is referring to shown in Figure 1; The interior pipe 1 and outer tube 2 that comprise metal material; In pipe 1 two ends respectively through dielectric support block 3, dielectric support block 31 insulation support and connection in outer tube 2, dielectric support block 3, dielectric support block 31 are processed the dielectric support block 3 outer end cap seats 4 that weld mutually with outer tube 2 that are coated with by teflon; The dielectric support block 31 outer end cap seats 41 that weld mutually with outer tube 2 that are coated with; After the metal core wire 9 of drawing lead 5 core band insulation courses 8 is passed the through hole on end cap seat 41 and the dielectric support block 31, be welded in battery lead plate 6 in the pipe 1 is electrically connected---weld, draw lead 5 outer field metal screen layers 7 and be electrically connected---and is welded on the end cap seat 41 with outer tube 2.The shortcoming of above-mentioned this syndeton is: because lead can constantly be swung along with rocking of dewar bottle (like vehicle-mounted bottle) in dewar bottle; Above-mentioned this syndeton can be directly delivered to the swing of lead the weld of metal core wire and battery lead plate; The long-time metal core wire of using the back just to make weld easily comes off or ruptures, and finally causes scrapping of Cryo Heat Insulation bottle.
Summary of the invention
The purpose of this invention is to provide a kind of syndeton of drawing lead that can the swing of lead be passed to the condenser type low temperature liquid level gauge of metal core wire and battery lead plate junction.
For realizing above-mentioned purpose, the present invention has adopted following technical scheme.
The syndeton of drawing lead of condenser type low temperature liquid level gauge comprises: the interior pipe and the outer tube of metal material, the two ends of interior pipe insulate support and connection in outer tube through dielectric support block respectively, and dielectric support block is coated with the end cap seat that welds mutually with outer tube outward; Be characterized in: the outer end at an end cap seat is provided with cone-shaped inner hole; Taper plush copper on the teflon insulation compact heap is equipped with in cone-shaped inner hole; The fastening end cap sleeve is pressed on the insulation compact heap and with the end cap seat and is threaded; The metal core wire of drawing lead core band insulation course pass successively after fastening end cap, insulation compact heap, end cap seat, the dielectric support block be welded in battery lead plate in managing be electrically connected, the metal screen layer of drawing wire external layer is electrically connected with outer tube.
Further, the syndeton of drawing lead of aforesaid condenser type low temperature liquid level gauge, wherein: battery lead plate is provided with trip bolt, and the metal core wire of drawing the lead internal layer is through trip bolt and mutual fastening electrical connection of battery lead plate.
Further, the syndeton of drawing lead of aforesaid condenser type low temperature liquid level gauge, wherein: described end cap seat, fastening end cap are metal material, and the metal screen layer of drawing wire external layer is welded on the fastening end cap, realizes being electrically connected each other with outer tube.
Beneficial effect of the present invention: because the taper plush copper on the insulation compact heap is equipped with in the cone-shaped inner hole on the end cap seat; After tightening fastening end cap gradually; The insulation compact heap can shrink gradually, and tightly locking draw the metal core wire of lead core band insulation course, so just can the swing of lead be blocked outside, make the swing of lead can not be passed to the junction of metal core wire and battery lead plate; Thereby that guarantees to connect is reliable and stable, has greatly prolonged the reliable serviceable life of low-temperature insulation bottle.
Description of drawings
Fig. 1 is the synoptic diagram of the syndeton of drawing lead of the condenser type low temperature liquid level gauge described in the background technology.
Fig. 2 is the synoptic diagram of the syndeton of drawing lead of condenser type low temperature liquid level gauge of the present invention.
Embodiment
Be further described below in conjunction with accompanying drawing and preferred embodiment the syndeton of drawing lead condenser type low temperature liquid level gauge of the present invention.
Referring to shown in Figure 2; The syndeton of drawing lead of condenser type low temperature liquid level gauge of the present invention; Comprise: the interior pipe 1 and the outer tube 2 of metal material; Support and connection are insulated in outer tube 2 through dielectric support block 3, dielectric support block 31 respectively in the two ends of interior pipe 1; The dielectric support block 3 outer end cap seats 4 that weld mutually with outer tube 2 that are coated with; The dielectric support block 31 outer end cap seats 41 that weld mutually with outer tube 2 that are coated with; Outer end at end cap seat 4 is provided with cone-shaped inner hole, and the taper plush copper on the teflon insulation compact heap 10 is equipped with in cone-shaped inner hole, and fastening end cap 12 covers are pressed on the insulation compact heap 10 and with end cap seat 4 and are threaded---between fastening end cap 12 and insulation compact heap 10, be provided with sealing gasket 11 in the present embodiment; End cap seat 4, end cap seat 41, fastening end cap 12 are metal material; The metal core wire 9 of drawing lead 5 core band insulation courses 8 pass fastening end cap 12, sealing gasket 11, insulation compact heap 10, end cap seat 4, dielectric support block 3 backs successively and be welded in battery lead plate 6 in the pipe 1 be electrically connected, draw lead 5 outer field metal screen layers 7 and be electrically connected with outer tube 2---draw lead 5 outer field metal screen layers 7 in the present embodiment and be welded on the fastening end cap 12, realization is electrically connected with outer tube 2 each other.Battery lead plate 6 is provided with trip bolt 13, and the metal core wire 9 of drawing lead 5 internal layers is through trip bolt 13 and battery lead plate 6 mutual fastening electrical connections.
The syndeton of drawing lead of condenser type low temperature liquid level gauge of the present invention; Because the taper plush copper on the insulation compact heap 10 is equipped with in the cone-shaped inner hole on end cap seat 4; After tightening fastening end cap 12 gradually, the taper plush copper on the insulation compact heap 10 can constantly be got in the cone-shaped inner hole on the end cap seat 4, makes insulation compact heap 10 shrink, also tightly lock the metal core wire 9 of drawing lead 5 core band insulation courses 8 gradually; So just can the swing of lead 5 be blocked outside; Make the swing of lead 5 can not be passed to the junction of metal core wire 9 and battery lead plate 6, thus guarantee to connect reliable and stable, greatly prolonged reliable serviceable life of low-temperature insulation bottle.