CN2586051Y

CN2586051Y - Intermittent bleeder

Info

Publication number: CN2586051Y
Application number: CN 02240900
Authority: CN
Inventors: 孙平
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-10
Filing date: 2002-07-10
Publication date: 2003-11-12
Anticipated expiration: 2012-07-10

Abstract

The utility model relates to an intermittent water draining valve which has the advantages of air blocking, water draining, pollution discharging, frostbite preventing and long service life. The utility model is the water draining valve with comprehensive functions, a compensation device is arranged at the bottom of a water draining valve body, a temperature sensing element is arranged in the compensation device, water inlet holes at one end of the inner side of a chamber body of the compensation device are connected with water draining holes at the bottom of the valve body, and the drainage holes are connected with low level pipelines of the valve body at the other end. The intermittent water draining valve is mainly used for an intermittent air supplying device and a pipeline network. The utility model can solve the problems that a large amount of gather addition condensing water is discharged at device opening time, and the condensing water which is remained in the pipelines, the device, and the water draining valve body is all discharged at device stopping time. The utility model really solves the problem of frostbite preventing of the device.

Description

The intermittent type drain valve

Affiliated technical field

It is the intermittent type drain valve that the utility model relates to a kind of drain valve, has choke, draining, blowdown, antifreeze function.

Background technique

Present existing floating ball hydrophobic water valve kind is a lot, free floating ball drain valve, lever and floating drain valve and double track floating ball hydrophobic water valve etc. are arranged, its basic structure is that a ball float is housed in the valve body, and the valve body internal upper part is equipped with filter screen, and valve seat is equipped with in the valve body bottom, ball float contacts with valve seat, the valve opening of seal valve seat, when in the valve body condensed water being arranged, ball float is floating, lift off a seat and open valve opening, make condensed water discharge valve body.When in the valve body steam being arranged, the valve opening of the not floating still closed valve seat of ball float can not let out steam.Reach effective discharging condensed water and prevent vapour leakage.Often stopping the supple of gas or steam and opening on the gas equipment, pipe network of gas but this drain valve uses, have many technical problems: one: when start was supplied gas, the condensed gas in the valve body can not in time discharge, and causes vapour lock, and the equipment that influences heats up.Its two: the condensed water of the amount of being created in can not in time discharge when vapour is sent in start, and the equipment that influences heats up and quality of steam.Its three: be present in the valve body after the shutdown, all emptyings of condensed water in the pipeline,, easily cause drain valve and equipment freezing at cold area.

Summary of the invention

In view of above-mentioned the deficiencies in the prior art part; the purpose of this utility model; be to provide a kind of performance comprehensive; can solve the start exhaust; moment is discharged a large amount of condensed waters; make the equipment quick heating, can the emptying valve body during shutdown and equipment in the condensed water that is detained, and have the intermittent type drain valve of antifreeze function.

The purpose of this utility model can realize by following measure.

A kind of intermittent type drain valve, it comprises: free floating ball drain valve, double track floating ball hydrophobic water valve or bistable lever floating ball hydrophobic water valve are arranged, bottom at its valve body is provided with weep hole, outside at weep hole links to each other with a compensation device, heat responsive element is housed in the compensation device, an end is the water inlet in the cavity, and the other end is a weep hole.The water inlet of compensation device is connected with valve body bottom discharge hole, and weep hole is connected with the low level flowing line that drain valve is equipped with, heat responsive element in the compensation device is influenced by steam temperature and condensate temperature, axially moves the opening and closing water inlet, when the pressure of water is lower than 0.05MPA, be fitted in the return spring on the heat responsive element, the taper of heat responsive element is pushed open from the water inlet, open passage, condensed water is all discharged, solve antifreeze problem.

When start is supplied gas, external the condensed gas in the valve body gut line under the pressure of the steam of drain valve front end and condensed water promotes by the water inlet and the weep hole expulsion valve of compensation device, reduce vapour lock, increase the steam metabolism velocity.

When start is supplied gas, because of anxious poly-heat exchange, produce a large amount of condensed waters, general temperature is between 60 ℃～100 ℃, and at this moment, condensed water floats ball float in the valve body, open the valve opening on the valve seat, make the condensed water discharging, and the heat responsive element of compensation device is also opened the water inlet at this moment, makes the interior condensed water of valve body simultaneously through the bottom discharge hole, discharge through compensation device, reach the purpose of compensation discharge amount,, can install one and discharge simultaneously to several compensation devices according to the discharge capacity needs, thus, form the poly-condensed water that increases of porous discharging, solve the untimely difficulty of condensed water discharging, increase device temperature, reduce the temperature rise time, be contained in the minimum position of drain valve again because of compensation device, can guarantee that condensed water discharging interior drain valve and that be higher than in the pipeline of position, the end is clean, prevent that drain valve and equipment are freezing.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1: generalized section of the present utility model;

Fig. 2: compensation device generalized section of the present utility model;

Fig. 3: the utility model discharging condensed gas schematic representation;

Fig. 4: the poly-condensed water schematic representation that increases of the utility model discharging;

Fig. 5: the utility model emptying condensed water schematic representation.

Specific embodiment:

Utilize the example shown in the accompanying drawing, the utility model be described further:

At intermittent type drain valve shown in Figure 1 by valve body 1, filter screen 2, ball float 3, valve seat 4, double track 5, compensation device 6, low level waste pipe 7, compensation device water inlet 8 is connected with valve body lower curtate weep hole 9, the weep hole 11 of compensation device is connected with low level pipeline 7.

In compensation device sectional drawing shown in Figure 2, compensation device is by housing 12, heat responsive element 13, and guide pipe 14, return spring 15, heat responsive element taper 16, water inlet 17, weep hole 18, Luo Zhu 19 is transferred in the back, O RunddichtringO 20, seal washer 21, bonnet 22 is formed.

Heat responsive element 13 axially moves after being subjected to temperature sense, splashes to expand when heat responsive element 13 and close water inlet 17 when mobile in the water inlet 17 of opening and closing compensation device, makes the ball float 3 control condensed waters discharging and stop vapour leakages separately in the valve body 1 among Fig. 1.

When heat responsive element shrinks when mobile, open weep hole 17, participate in the drainings of floating of ball float 3 in the valve body 1, play the effect of compensation discharging condensed water, increase water displacement.

When shutdown stops to supply gas, along with pressure is reduced to 0.05MPA, return spring 15 on the heat responsive element 13 is pushed heat responsive element 13 open, making it front end taper 16 leaves with water inlet 17, form drainage gap, thus, reach the potential difference of the interior condensed water of pipeline in valve body 1 chamber by self, slowly all expulsion valve is external, enters position, end pipeline and drains, to solve antifreeze problem, for the drainage gap that in compensation device, forms, when the condensed water emptying, the gap is constant, the condensing air discharging duct when supplying gas as starting shooting for the second time.

In the schematic representation of discharging condensed gas shown in Figure 3:

Condensed gas in the chamber of valve body 25 shown in Figure 3, under valve body 25 front ends 26 vapor tensions promoted, condensing air is from valve body 25 bottom discharge holes 29, and was external through the water inlet 30 and weep hole 29 expulsion valves of compensation device 18.

Increase in the condensed water schematic representation in that discharging shown in Figure 4 is poly-:

Valve body 32 shown in Figure 4, cavity floats ball float 33 for the poly-condensed water that increases, and opens valve seat 34, and valve opening makes condensed water be drained into low level pipeline 35 from valve opening and discharges.And condensate temperature is between 60 ℃-100 ℃ the time, the heat responsive element 37 of compensation device 36 is opened water inlet 38 automatically and is discharged condensed water through weep hole 39, like this in that condensed water is poly-when increasing, open the discharging condensed water simultaneously by 34 weep holes of the valve seat in the valve body 32 and compensation device 36 water inlets 38, according to water displacement, can assemble one to the poly-condensed water that increases of the auxiliary eliminating of several compensation dresses.

In low level emptying condensed water schematic representation shown in Figure 5:

In the cavity of valve body 39 shown in Figure 5; because shutdown and drain valve front end do not have vapor tension; condensed water that is detained in the cavity and the condensed water in the pipeline; utilize the water-head of self; through position, the end weep hole 40 of valve body 39 and the water inlet 41 of compensation device 43, weep hole 42 is discharged in the low level pipeline 44 condensed water.All discharging is clean the condensed water that is detained after shutdown, prevents freezing.

This practical technique has the following advantages than existing technology:

1, intermittently three big technical difficulties of gas equipment and pipe network have been solved;

The automatic discharging of condensing air when having solved start;

The discharging of the poly-increment of moment condensed water when having solved start;

Solved and shut down whole dischargings that condensed water is detained in the back.

2, because of the technical solution difficulty, make equipment quick heating, thermal efficiency height, satisfy the needs of production technology, and it is hydrophobic to reach choke, the purpose of energy saving.

The above, only being that the utility model causes good example, is not that the utility model is done any form restriction, every according to technical spirit of the present utility model, above example is done any simple modification, variation and modification, all belong in the technical solution of the utility model scope.

Claims

1. an intermittent type drain valve is made up of drain valve and compensation device two-part, it is characterized in that: compensation device is contained in the drain valve bottom, can manufacture integral type between drain valve and the compensation device, also can make separately to fit together.

2. a kind of intermittent type drain valve according to claim 1, it is characterized in that: drain valve is an Open bucket steam trap, the free floating ball drain valve, the double track floating ball hydrophobic water valve, mechanical interlock floating ball hydrophobic water valve, lever and floating drain valve, bimetal interlock floating ball hydrophobic water valve, bimetal drainage valve, metal bellows drain valve, heat power drain valve.

3. a kind of intermittent type drain valve according to claim 1 and 2 is characterized in that: compensation device mainly is by housing, and heat responsive element is formed.

4. according to claim 2 or 3 described a kind of intermittent type drain valves, it is characterized in that: the heat responsive element front end is taper and is fitted with return spring, match with the water inlet of housing, the water inlet is connected with drain valve bottom discharge hole, and the rear end of heat responsive element links to each other with adjusting sieve bolt.

5. according to claim 3 or 4 described a kind of intermittent type drain valves, it is characterized in that: the position of the weep hole on the compensation device is located at the minimum point of drain valve draining.