CN203868672U - Drain valve facilitating prevention of steam locking - Google Patents
Drain valve facilitating prevention of steam locking Download PDFInfo
- Publication number
- CN203868672U CN203868672U CN201420306853.3U CN201420306853U CN203868672U CN 203868672 U CN203868672 U CN 203868672U CN 201420306853 U CN201420306853 U CN 201420306853U CN 203868672 U CN203868672 U CN 203868672U
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- CN
- China
- Prior art keywords
- tinsel
- vapour lock
- condensed water
- drain valve
- valve gap
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a drain valve facilitating prevention of steam locking. The drain valve comprises a left valve cover and a right valve cover, a condensate water accommodating cavity is arranged between the left valve cover and the right valve cover, an inlet pipe and an outlet pipe are arranged on the left valve cover or the right valve cover, and a floating ball is arranged in the condensate water accommodating cavity. The drain valve further comprises an evacuation device which comprises a thermal static-force metal sheet, a sealing ball and a steam locking drainage flow channel, the front end and the rear end of the steam locking drainage flow channel are connected with the condensate water accommodating cavity and the outlet pipe respectively, the sealing ball is fixed on the thermal static-force metal sheet and right faces the front end of the steam locking drainage flow channel, the section of the thermal static-force metal sheet is diamond, and the sealing ball is located at the vertex angle of the diamond shape. The drain valve can automatically drain non-condensable gas and is long in service life.
Description
Technical field
The utility model relates to a kind of steam pipe system equipment, particularly relates to a kind of drain valve that is conducive to prevent the generation of vapour lock.
Background technique
The effect of drain valve is that the water of condensation in vapour system, air and carbon dioxide are discharged as early as possible; Prevent to greatest extent steam leakage simultaneously.The kind of drain valve is a lot, requires on high pipeline hydrophobic, generally all adopts float ball type steam drain valve in prior art, can ensure like this in steam flow channel condensed water can be continuously, be not stressed fluctuation and load variations of a large amount of, discharge affect.
The working principle of Ball float steam trap is to connect ball lever by ball float, by the variation of liquid level in condensed water cavity volume, controls the break-make of condensed water cavity volume and liquid port, reaches the object of automatic excretion condensed water.Steam pipe system in the course of the work, particularly in the heat pipe process of the initial ventilation of steam pipe system, in pipe network, there is a large amount of incoagulable gas, in prior art, Ball float steam trap is for above-mentioned incoagulable gas, compared to thermodynamic trap, be prone to vapour lock phenomenon at drain port place, be unfavorable for the heat exchange efficiency of heat transmission equipment and the safety reliability of steam pipe system operation.
Model utility content
For solving in above-mentioned prior art Ball float steam trap for above-mentioned incoagulable gas, compared to thermodynamic trap, be prone to vapour lock phenomenon at drain port place, the problem that is unfavorable for the heat exchange efficiency of heat transmission equipment and the safety reliability of steam pipe system operation, the utility model provides a kind of drain valve that is conducive to prevent the generation of vapour lock.
For the problems referred to above, the utility model solves problem by the following technical programs: a kind of drain valve that is conducive to prevent the generation of vapour lock, comprise bolted left valve gap and right valve gap, between left valve gap and right valve gap, be provided with condensed water cavity volume, on left valve gap or right valve gap, be provided with the inlet duct and the outer pipe that are connected with condensed water cavity volume, in described condensed water cavity volume, be provided with ball float, also comprise the emptier of the upside that is arranged on condensed water cavity volume, described emptier comprises hot static(al) tinsel, ball sealer, being arranged on vapour on left valve gap or right valve gap lock unloads and releases, described vapour lock unloads the rear and front end of releasing and is connected with outer pipe with condensed water cavity volume respectively, ball sealer is fixed on hot static(al) tinsel, and ball sealer just unloads the front end of releasing to vapour lock, the cross section of described hot static(al) tinsel assumes diamond in shape, ball sealer is positioned at the drift angle place of described rhombus.
The left valve gap arranging and right valve gap form the valve body of drain valve, the ball float arranging is used for according to the liquid level control condensed water cavity volume in condensed water cavity volume and the break-make of outer pipe, the emptier arranging is used for the excretion of incoagulable gas in condensed water cavity volume: hot static(al) tinsel is expanded by heating element, its swell increment is determined according to the applicable pressure rating of different drain valves, concrete, when the operating temperature of valve lower than design working pressure under when saturation vapour pressure temperature, hot static(al) tinsel is subject to thermogenetic distortion to be not enough to make ball sealer unload the entrance motion of releasing and stop up vapour lock and unload and release to vapour lock, like this, incoagulable gas is unloaded to release by vapour lock under pressure reduction can get rid of pipe network, along with the further rising of pipe network temperature, in the time that ball sealer is blocked vapour lock and unloaded the entry end of releasing, realize vapour lock and unload blocking of releasing, prevent that steam from leaking.
The setting that the cross section of hot static(al) tinsel assumes diamond in shape, the distortion producing by the stack on rhombus four limits realizes the change of ball sealer position, compared to the hot static(al) tinsel that adopts monolithic structure form, produce at ball sealer adopt under the prerequisite of same displacement that cross section assumes diamond in shape be provided with to be beneficial to and reduce monotropic distortion, like this, can being arranged on original state lower seal ball and vapour lock, to unload distance between releasing larger, be conducive to the discharge efficiency of incoagulable gas, and the mutual restriction on the each limit of rhombus is conducive to make hot static(al) tinsel, and after expanded by heating, ball sealer can displacement, be conducive to ball sealer and vapour lock and unload the sealing effect while producing sealing between releasing, simultaneously, compared to the hot static(al) tinsel of bellows structure form, the structure length of above hot static(al) tinsel is less, hot like this static(al) tinsel used after a period of time, the accumulation of distortion that high temperature creep causes is less, can extend the time that forces hot static(al) tinsel to lose efficacy due to high temperature creep, above structural type also helps the life-span of the present utility model.
Further technological scheme is:
The possibility of being stopped up by the impurity such as iron rust, welding slag in pipe network for reducing the utility model, extend the working life of sealing surface in the utility model, also comprise filter screen groove, described filter screen groove is arranged on the entry end of inlet duct to the arbitrary position of condensed water cavity volume runner, and described filter screen groove is used for arranging filter screen.
Described vapour lock unloads the entrance of releasing and is also embedded with sealing seat, and the material of described sealing seat is stainless steel.The sealing seat arranging unloads the wear resistance of the sealing surface of the formation of releasing for increasing ball sealer and vapour lock, be conducive to working life of the present utility model.
Described emptier also comprises and is the upper cover and the lower cover that removably connect, between described upper cover and lower cover, be formed with tinsel receiving cavity, described hot static(al) tinsel is positioned at tinsel receiving cavity, and tinsel receiving cavity communicates with condensed water cavity volume by labyrinth flow-path.The labyrinth flow-path arranging by the setting of runner corner, avoids entering into the utility model steam or the direct collision of incoagulable gas to hot static(al) tinsel, is more than provided with the directionality that is beneficial to ball sealer motion.
In described inlet duct and outer pipe, be provided with internal thread, and described internal thread is pipe thread.More than arrange and be threaded connection connection the utility model and pipe network, adopt the structural type of pipe thread to be conducive to the sealability of tie point, be conducive to reduce volume of the present utility model and the utility model and pipe network tie point and produce the possibility of seal failure.
For increase hot static(al) tinsel be heated produce expand swell increment size, described hot static(al) tinsel is thermal expansion alloy.
The utility model compared with prior art, has following beneficial effect:
1, the utility model is simple in structure, the emptier arranging is used for the excretion of incoagulable gas in condensed water cavity volume: hot static(al) tinsel is expanded by heating element, its swell increment is determined according to the applicable pressure rating of different drain valves, concrete, when the operating temperature of valve lower than design working pressure under when saturation vapour pressure temperature, hot static(al) tinsel is subject to thermogenetic distortion to be not enough to make ball sealer unload the entrance motion of releasing and stop up vapour lock and unload and release to vapour lock, like this, incoagulable gas is unloaded to release by vapour lock and can get rid of pipe network under pressure reduction; Along with the further rising of pipe network temperature, in the time that ball sealer is blocked vapour lock and unloaded the entry end of releasing, realize vapour lock and unload blocking of releasing, prevent that steam from leaking, more than arrange and realize the automatic excretion of the utility model to incoagulable gas.
2, the setting that the cross section of hot static(al) tinsel assumes diamond in shape, the distortion producing by the stack on rhombus four limits realizes the change of ball sealer position, be conducive to the discharge efficiency of incoagulable gas, be conducive to ball sealer and vapour lock and unload the sealing effect while producing sealing between releasing; Meanwhile, the accumulation of distortion that above structure causes hot static(al) tinsel high temperature creep is less, can extend the time that forces hot static(al) tinsel to lose efficacy due to high temperature creep, and above structural type also helps the life-span of the present utility model.
Brief description of the drawings
Fig. 1 is the structural representation of an a kind of embodiment that is conducive to the drain valve that prevents the generation of vapour lock described in the utility model;
Fig. 2 is a kind of structural representation that is conducive to a specific embodiment of drain valve emptier that prevents the generation of vapour lock described in the utility model.
Name corresponding to graphical indicia is called: 1, outer pipe, 2, right valve gap, 3, emptier, 31, upper cover, 32, hot static(al) tinsel, 33, lower cover, 34, vapour lock unloads and releases, 35, sealing seat, 36, ball sealer, 4, left valve gap, 5, condensed water cavity volume, 6, ball float, 7, filter screen groove, 8, inlet duct.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail:
Embodiment 1:
As Fig. 1 and Fig. 2, a kind of drain valve that is conducive to prevent the generation of vapour lock that the utility model provides, comprise bolted left valve gap 4 and right valve gap 2, between left valve gap 4 and right valve gap 2, be provided with condensed water cavity volume 5, on left valve gap 4 or right valve gap 2, be provided with the inlet duct 8 and the outer pipe 1 that are connected with condensed water cavity volume 5, in described condensed water cavity volume 5, be provided with ball float 6, also comprise the emptier 4 of the upside that is arranged on condensed water cavity volume 5, described emptier 4 comprises hot static(al) tinsel 32, ball sealer 36, being arranged on vapour on left valve gap 4 or right valve gap 2 lock unloads and releases 34, described vapour lock unloads 34 the rear and front end of releasing and is connected with outer pipe 1 with condensed water cavity volume 5 respectively, ball sealer 36 is fixed on hot static(al) tinsel 32, and ball sealer 36 just unloads to vapour lock 34 the front end of releasing, the cross section of described hot static(al) tinsel 32 assumes diamond in shape.
In the present embodiment, the right valve gap 2 of setting and the outside of left valve gap 4 are also provided with thermal insulation layer, to increase the thermal resistance of valve body of the present utility model; The ball float 6 arranging and be connected to ball lever on ball float 6 all to adopt the trade mark be 304 stainless steel, the ball float 6 arranging designs for combined type, be that the hemisphere that ball float 6 is at least threaded by two lobes forms, like this, be connected fracture with ball lever during at ball float 6, can reduce impracticable novel maintenance cost by changing damaged portion.
Embodiment 2:
The present embodiment does further restriction on embodiment 1 basis: as Fig. 1 and Fig. 2, the possibility of being stopped up by the impurity such as iron rust, welding slag in pipe network for reducing the utility model, extend the working life of sealing surface in the utility model, also comprise filter screen groove 7, described filter screen groove 7 is arranged on the entry end of inlet duct 8 to the arbitrary position of condensed water cavity volume 5 runners, and described filter screen groove 7 is for arranging filter screen.
Described vapour lock unloads 34 the entrance of releasing and is also embedded with sealing seat 35, and the material of described sealing seat 35 is stainless steel.The sealing seat 35 arranging is locked the wear resistance of unloading 34 sealing surfaces that form of releasing for increasing ball sealer 36 and vapour, is conducive to working life of the present utility model.
Embodiment 3:
The present embodiment does further restriction on embodiment 1 basis: as Fig. 1 and Fig. 2, described emptier 4 also comprises and is the upper cover 31 and the lower cover 33 that removably connect, between described upper cover 31 and lower cover 33, be formed with tinsel receiving cavity, described hot static(al) tinsel 32 is positioned at tinsel receiving cavity, and tinsel receiving cavity communicates with condensed water cavity volume 5 by labyrinth flow-path.The labyrinth flow-path arranging by the setting of runner corner, avoids entering into the utility model steam or the direct collision of incoagulable gas to hot static(al) tinsel 32, is more than provided with and is beneficial to the directionality that ball sealer 36 moves.
Embodiment 4:
The present embodiment does further restriction on embodiment 1 basis: as Fig. 1 and Fig. 2, in described inlet duct 8 and outer pipe 1, be provided with internal thread, and described internal thread is pipe thread.More than arrange and be threaded connection connection the utility model and pipe network, adopt the structural type of pipe thread to be conducive to the sealability of tie point, be conducive to reduce volume of the present utility model and the utility model and pipe network tie point and produce the possibility of seal failure.
Embodiment 5:
The present embodiment does further restriction on above embodiment's basis: as Fig. 1 and Fig. 2, for increase hot static(al) tinsel 32 be heated produce expand swell increment size, described hot static(al) tinsel 32 is thermal expansion alloy.In the present embodiment, adopting hot static(al) tinsel 32 is iron nickel cobalt glass sealing alloy, in the pipe network that is 2.5Mpa for design pressure.
Above content is the further description of the utility model being done in conjunction with concrete preferred implementation, can not assert that embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other mode of executions that draw under the technical solution of the utility model, all should be included in protection domain of the present utility model.
Claims (6)
1. one kind is conducive to the drain valve that prevents that vapour lock from producing, comprise bolted left valve gap (4) and right valve gap (2), between left valve gap (4) and right valve gap (2), be provided with condensed water cavity volume (5), on left valve gap (4) or right valve gap (2), be provided with the inlet duct (8) and the outer pipe (1) that are connected with condensed water cavity volume (5), in described condensed water cavity volume (5), be provided with ball float (6), it is characterized in that, also comprise the emptier (3) of the upside that is arranged on condensed water cavity volume (5), described emptier (3) comprises hot static(al) tinsel (32), ball sealer (36), the vapour lock being arranged on left valve gap (4) or right valve gap (2) unloads release (34), the rear and front end that described vapour lock unloads release (34) is connected with outer pipe (1) with condensed water cavity volume (5) respectively, ball sealer (36) is fixed on hot static(al) tinsel (32), and ball sealer (36) just unloads the front end of release (34) to vapour lock, the cross section of described hot static(al) tinsel (32) assumes diamond in shape, ball sealer (36) is positioned at the drift angle place of described rhombus.
2. a kind of drain valve that is conducive to prevent the generation of vapour lock as claimed in claim 1, is characterized in that, also comprise filter screen groove (7), described filter screen groove (7) is arranged on the entry end of inlet duct (8) to the arbitrary position of condensed water cavity volume (5) runner.
3. a kind of drain valve that is conducive to prevent the generation of vapour lock as claimed in claim 1, is characterized in that, the entrance that described vapour lock unloads release (34) is also embedded with sealing seat (35), and the material of described sealing seat (35) is stainless steel.
4. a kind of drain valve that is conducive to prevent the generation of vapour lock as claimed in claim 1, it is characterized in that, described emptier (3) also comprises and is the upper cover (31) and the lower cover (33) that removably connect, between described upper cover (31) and lower cover (33), be formed with tinsel receiving cavity, described hot static(al) tinsel (32) is positioned at tinsel receiving cavity, and tinsel receiving cavity communicates with condensed water cavity volume (5) by labyrinth flow-path.
5. a kind of drain valve that is conducive to prevent the generation of vapour lock as claimed in claim 1, is characterized in that, be provided with internal thread, and described internal thread is pipe thread in described inlet duct (8) and outer pipe (1).
6. as a kind of as described in any one in claim 1 to 5 is conducive to the drain valve that prevents that vapour lock from producing, it is characterized in that, described hot static(al) tinsel is thermal expansion alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306853.3U CN203868672U (en) | 2014-06-11 | 2014-06-11 | Drain valve facilitating prevention of steam locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306853.3U CN203868672U (en) | 2014-06-11 | 2014-06-11 | Drain valve facilitating prevention of steam locking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203868672U true CN203868672U (en) | 2014-10-08 |
Family
ID=51649626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420306853.3U Expired - Fee Related CN203868672U (en) | 2014-06-11 | 2014-06-11 | Drain valve facilitating prevention of steam locking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203868672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048154A (en) * | 2014-06-11 | 2014-09-17 | 成都科力夫科技有限公司 | Drain-off device for preventing generation of steam locking favorably |
-
2014
- 2014-06-11 CN CN201420306853.3U patent/CN203868672U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048154A (en) * | 2014-06-11 | 2014-09-17 | 成都科力夫科技有限公司 | Drain-off device for preventing generation of steam locking favorably |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20150611 |
|
| EXPY | Termination of patent right or utility model |