CN2898559Y

CN2898559Y - Self-shutting drainer

Info

Publication number: CN2898559Y
Application number: CN 200620008393
Authority: CN
Inventors: 刘德强
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-22
Filing date: 2006-03-22
Publication date: 2007-05-09
Anticipated expiration: 2016-03-22

Abstract

The utility model discloses a low pressure gas pipeline self-shutting drainer particularly suitable for gas pipeline drainage, which comprises a drum, a clapboard, a high pressure working pipe, a low pressure working pipe, a steam pipe, a drainage hole and a clean up hole, wherein, inside the high pressure working pipe a superior and inferior floating balls are positioned and connected each other through a guide bar; the guide bar passes through the guide sleeve of the support for guiding on the high pressure working pipe wall. The utility model has the advantages of that: when water level of high pressure chamber falls to a certain level, the ball cock flow rate reduces along with the lowering of water level; when water level of high pressure chamber falls to critical state, the ball cock is shut to avoid danger caused by gas leakage in large amount; when gas pipeline pressure is not stable and increases instantly to the highest pressure designed for the drainer, the ball cock is shut immediately to prevent gas leakage in large amount.

Description

The self-closing hydathode

Technical field

The utility model relates to low-pressure gas pipeline drainage equipment, and it is applicable to the draining of gas pipe line In-particular.

Background technique

Present known hydathode is to be divided into several compartments, each compartment in the container as a working room, and each working room is full of water, utilizes the water-head principle, takes the form of overflow, makes water in the pipeline, transmits the purpose that reaches its safe draining one by one.At northern area, set up a steam pipe in the container, be used for increasing the temperature of water in the container, prevent the spill pipe in the freezing of water in the container, the blocking container, do not reach the purpose of safe draining.Container top is established a moisturizing hole and exhaust port, will be carried out moisturizing in the frequentation container, to reach normal job requirement.Outside of containers top establishes a spill pipe, for the water in the pipeline is effectively discharged.

The shortcoming of above-mentioned hydathode: 1. when the water level in the hydathode was low, pipe network coal gas was easy to be discharged in a large number in the air by hydathode, and people are caused serious threat; 2. the pressure in the gas pipe line often fluctuates unstablely moving, brings very big difficulty for the personnel of patrolling and examining, if the untimely coal gas that also makes easily of moisturizing simultaneously leaks outside.

The model utility content

The utility model improves the safety reliability of equipment in order to overcome the shortcoming of traditional hydathode, improves the efficient of hydathode, alleviates the personnel's of patrolling and examining labor intensity.

This novel hydathode is a cylindrical structure, in establish dividing plate, make it to form operating on low voltage chamber, high-pressure work chamber, connect with interior spill pipe between working room and the working room, make it to meet the requirements of water seal height.This model utility comprises cylindrical shell, dividing plate, high-pressure work pipe, operating on low voltage pipe, steam pipe, weep hole and soil shifting opening, it is characterized in that: in the high-pressure work pipe, be provided with upper floating ball and following ball float, upper floating ball is connected by guide rod with following ball float, and guide rod passes the guide thimble on the guiding trestle that is welded on the high-pressure work tube wall.

The utility model advantage:

1. when the drawdown in hyperbaric chamber arrived certain position, the float valve flow also reduced along with the reduction of water level.When the water level in hyperbaric chamber was reduced to threshold state, float valve was in closed condition, avoided leaking outside in a large number of coal gas and caused danger.

2. when the pressure instability of gas pipe line, moment, float valve was in closed condition immediately, blocks a large amount of leakages of coal gas when being increased to the designed maximum pressure of hydathode itself.

Description of drawings

Fig. 1 is the structural representation of the related self-closing hydathode of the utility model;

Fig. 2 is the plan view for the related self-closing hydathode of the utility model;

Fig. 3 is for being the related guiding trestle structural representation of the utility model.

1, purge hole; 2, upper floating ball; 3, valve port; 4, valve seat; 5, baffle plate; 6, go up guiding trestle; 7, guide rod; 8, high-pressure work pipe; 9, operating on low voltage pipe; 10, following guiding trestle; 11, following ball float; 12, moisturizing hole; 13, steam pipe; 14, exhaust port; 15, spill pipe; 16, dividing plate; 17, cylindrical shell; 18, soil shifting opening; 19, pipe valve; 20, guide thimble; 21, connecting rod.

Embodiment

As shown in Figure 1, the existing structural relation of the utility model: dividing plate 16 is separated into hyperbaric chamber and low pressure chamber with cylindrical shell 17, high-pressure work pipe 8 and operating on low voltage pipe 9 are installed in respectively in hyperbaric chamber and the low pressure chamber, be equipped with float valve in the high-pressure work pipe 8, be upper floating ball 2 and following ball float 11, ball float connects with guide rod 7 up and down, and the upper floating ball end opening is the valve port 3 of float valve.For guaranteeing the float valve vertical up-or-down movement, in establish guiding trestle 6 and following guiding trestle 10.For checking the working condition of float valve, top is equipped with purge hole 1, is used for checking and the purging valve port, to guarantee the leakproofness between valve port 3 and the valve seat 4.

Working principle of the present utility model is: after hydathode is installed in the gas pipe line bottom, open exhaust port 14 earlier, then from 12 water fillings of moisturizing hole, treat spill pipe 15 water outlets after moisturizing stop.Following ball float 11 drives float valve by guide rod 7 and moves up under water level rising effect, and hydathode is in the state of starting working.The inlet pipe valve 19 that turns on the gas-fire, the water in the gas pipe line flows into the hydathode hyperbaric chambers from valve port 3.When one timing of gas pipe line pressure, the condensed water in the pipeline is discharged to low pressure chamber working pipe 9 from high-pressure work pipe 8, again through discharging from spill pipe 15 behind the low pressure chamber.When the water level in the hydathode reduced, following ball float 11 descended along with the water surface and reduces, and the float valve opening degree also reduces until closing thereupon.When the gas pipe line pressure surge, the water surface in the hydathode is fluctuation thereupon also, and the float valve opening degree also changes thereupon, and the float valve when gas pipe line pressure overrate in the hydathode is closed immediately, reaches purpose of safe operation.With the valve open of steam pipe 13, the steam of release reached the purpose of heating with the water heating of this hydathode when winter was near.The sludge of hydathode precipitates respectively in hyperbaric chamber and low pressure chamber.When hydathode will overhaul, close the valve of gas pipe line.Take soil shifting opening 18 apart, go out the sludge in the hydathode clearly after, sealed soil shifting opening again.From 12 moisturizings of moisturizing hole, behind spill pipe 15 spilling waters, hydathode begins to rework then.

Be illustrated in figure 3 as the structural representation of guiding trestle, guide thimble 20 adopts the Stainless Steel Tube that highly is about 10mm to be made, on guide thimble 20, be welded with four connecting rods 21, the other end of connecting rod 21 is welded on the inwall of high-pressure work pipe 8, and guiding trestle can guarantee that float valve does vertical up-or-down movement.

Hyperbaric chamber working pipe 8 in this hydathode service pipe is a stainless steel seamless pipe, and low pressure chamber working pipe 9 and spill pipe 15 are seamless steel pipe, and cylindrical shell 17 and dividing plate 16 adopt common carbon steel board to be made, and steam pipe 13 adopts seamless steel pipe (northern area is antifreeze).Moisturizing hole 12 can be used to check the usefulness of situation and moisturizing in the hyperbaric chamber, adopts the weldless tube outside thread; Weep hole 14 is used for checking situation in the low pressure chamber, adopts the weldless tube outside thread; Purge hole 1 is used for checking whether proper functioning and purge the float valve valve port of float valve, to guarantee the tightness of valve port, is to adopt round steel to process.Upper floating ball 2 and valve port 3 adopt the low density lightweight material to be made, and have good intensity and corrosion resistance.Valve seat 4 usefulness tetrafluoroethylene are made.Baffle plate 5 usefulness corrosion resistant plates process.Guide rod 7 adopts the low density lightweight material to be made, and has good intensity and corrosion resistance.Last guiding trestle 6 reaches down, and guiding trestle 10 adopts stainless steel materials to be made.Following ball float 11 adopts the low density lightweight material to be made, and it has good intensity and corrosion resistance.

Claims

1, a kind of self-closing hydathode, comprise cylindrical shell, dividing plate, high-pressure work pipe, operating on low voltage pipe, steam pipe, weep hole and soil shifting opening, it is characterized in that: in high-pressure work pipe (8), be provided with upper floating ball (2) and following ball float (11), described upper floating ball (2) is connected by guide rod (7) with following ball float (11), and described guide rod (7) passes the last guiding trestle (6) that is welded on the high-pressure work pipe (8) and the guide thimble (20) of following guiding trestle (10).