CN2315544Y

CN2315544Y - Slide tube level meter

Info

Publication number: CN2315544Y
Application number: CN 97245570
Authority: CN
Inventors: 王荣桂; 赵传峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-28
Filing date: 1997-10-28
Publication date: 1999-04-21
Anticipated expiration: 2007-10-28

Abstract

The utility model discloses a level meter for a slide tube. A buffering sealing gasket (8) is additionally arranged between a flange body (7) and a spacing sleeve (10) of a common level meter for a slide tube, and the spacing sleeve (10) is fixed at the lower end of a slide tube (1); the flange body (7), the buffering sealing gasket (8) and the spacing sleeve can be contacted by lifting the slide tube (1); a cavity (6) is additionally arranged at the tail end of a stuffing box (4) on a sealing top ring (5) and the flange body (7). Accordingly, when a tank is filled with material, a sealing element (3) in the stuffing box can be directly replaced under voltage without discharging the material, so that the effective utilization factor of a tank car can be enhanced, and the overhaul can be convenient.

Description

The utility model Slide tube level meter

The utility model patent relates to the Slide tube level meter that a kind of railways tank car loading liquefied gas is used, and specifically, relates to the improvement of Slide tube level meter lower end buffer limit part.

In the present prior art, the domestic HGY type Slide tube level meter that has Jinxi Chemical Machinery Manufacturer to produce of used Slide tube level meter on the railways tank car loading liquefied gas, the Y41F type Slide tube level meter that new light non-standard equipment factory of Ministry of Astronautics Industry produces has the Slide tube level meter of Japanese carshop production etc. abroad.Its action principle is: move up and down the detection liquid-gas interface by slip pipe, the gas that telltale hole sprays on this interface changes liquid into or liquid changes gas into, by the liquid level of determining basin with the relative height of mark post that moves of slip pipe, thus the filling weight of control and measuring media.It is that a kind of reasonable filling weight of liquid gas of controlling guarantees the device that tank car is transported safely.This Slide tube level meter mainly contains flange body to be formed with the vertical slip pipe that passes flange body, and there are parts such as spring, latch bracket the slip pipe lower end, and latch bracket plays position-limiting action simultaneously, claims stop collar again.Present Slide tube level meter in use exists material and easily leaks, and slip pipe is not drawn out easily, and liquid level gauge is easy to failure, can't the interior defectives such as seal of replace with pressure stuffing box.The improved Slide tube level meter of patent CN96228107.7 is to improve on the basis of common Slide tube level meter, a kind of stopping a leak disclosed, prevent to measure malfunctioning, be convenient to the liquid level gauge that slip pipe is extracted, when but this Slide tube level meter has material in jar, when promptly having pressure in the jar, still can't directly change the seal in the stuffing box.In case the seal in the stuffing box damages, must be with the material in the jar, be outside the liquid gas drain tank, with nitrogen with in the jar displacement qualified after, could change the seal in the stuffing box, change not only jar interior gaseous contamination environment of discharging of the interior seal of stuffing box like this, and the tank car residence time be long, effective rate of utilization is low, the expense height.

The utility model patent is to improve on the basis of existing Slide tube level meter, provides a kind of and can connect the Slide tube level meter of changing the stuffing box inner seal liner with straightening.

In order to address the above problem, the technical scheme that the utility model patent is taked is: increased a cushion seal pad between the flange body of existing Slide tube level meter and stop collar, cancelled parts such as the spring of slip pipe lower end and latch bracket.

In the above-mentioned solution, when the seal in the replacing stuffing box, slip pipe is pulled up, stop collar is contacted with flange body by the cushion seal pad, under the effect of jar internal pressure, material is sealed, so just can material in the jar not discharged, directly change the seal in the stuffing box.Change on the basis of existing Slide tube level meter by this programme in addition, can not increase the manufacturing cost of Slide tube level meter, but the seal in the stuffing box is changed on safe ready ground, brings good economic benefit and social benefit.

Be described in further detail below in conjunction with the embodiment of accompanying drawing the utility model patent.

Fig. 1 is the sectional view of a kind of version of the utility model Slide tube level meter.

Fig. 2, Fig. 3 are the sectional views of other versions between the utility model Slide tube level meter flange body, cushion seal pad, the stop collar.

Cushion seal pad 8 is made by common nonmetallic materials among the figure, as fluoroplastic, specific rubber etc.It is between flange body 7 and stop collar 10, can adopt various ways to connect with flange body 7, stop collar 10, it and flange body 7 are connected as a single entity by screw or ring channel structures among Fig. 1, it and stop collar 10 are connected as a single entity by screw or ring channel structures among Fig. 2, and it is movably between flange body 7 and stop collar 10 among Fig. 3.Stop collar 10 adopts screw thread to connect with slip pipe 1, is convenient to field-strip, and is loosening in order to prevent screw thread, with rivet 9 their rivetings lived.When the seal 3 in the replacing stuffing box, slip pipe 1 is pulled up, make 10 contacts of flange body 7, cushion seal pad 8, stop collar, among this moment Fig. 1 among cushion seal pad 8 and stop collar 10, Fig. 2 among flange body 7 and cushion seal pad 8, Fig. 3 flange body 7 all seal with stop collar 10 with cushion seal pad 8, cushion seal pad 8 and contact.Under the effect of jar internal pressure, play sealing function, gas can't leak in jar, can unclamp gland 2 like this, directly changes the seal 3 in the stuffing box.When changing the seal 3 in the stuffing box, taking-up seal 3 has for convenience increased cavity 6 at stuffing box (4) end that seals apical ring 5 and flange body 7.Because the existence of cavity 6, jar internal pressure gives the sealing apical ring 5 one power that make progress by cavity 6, ejects the seal 3 in the stuffing box.

Claims

1. Slide tube level meter, form with the vertical parts such as slip pipe that pass flange body by flange body, it is characterized in that: between flange body (7) and the stop collar (10) a cushion seal pad (8) is arranged, stop collar (10) is fixed on slip pipe (1) lower end, can make flange body (7), cushion seal pad (8), stop collar (10) contact by pull-up slip pipe (1).

2. by the said Slide tube level meter of claim 1, it is characterized in that flange body (7) and cushion seal pad (8) are connected as a single entity, and take hermetically-sealed construction between cushion seal pad (8) and the stop collar (10).

3. by the said Slide tube level meter of claim 1, it is characterized in that cushion seal pad (8) and stop collar (10) are connected as a single entity, and take hermetically-sealed construction between flange body (7) and the cushion seal pad (8).

4. by the said Slide tube level meter of claim 1, it is characterized in that cushion seal pad (8) is contained between flange body (7) and the stop collar (10) movably, between flange body (7) and the cushion seal pad (8), cushion seal pad (8), stop collar take hermetically-sealed construction between (10).

5. by claim 1 or 2 or 3 or 4 said Slide tube level meters, it is characterized in that stuffing box (4) end that seals on apical ring (5) and the flange body (7) has a cavity (6).

6. by claim 1 or 2 or 3 or 4 said Slide tube level meters, it is characterized in that adopting screw thread to connect between slip pipe (1) and the stop collar (10), usefulness rivet (9) is locking.