CN206846289U - A kind of pilot-operated type steam trap valve - Google Patents
A kind of pilot-operated type steam trap valve Download PDFInfo
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- CN206846289U CN206846289U CN201720423823.4U CN201720423823U CN206846289U CN 206846289 U CN206846289 U CN 206846289U CN 201720423823 U CN201720423823 U CN 201720423823U CN 206846289 U CN206846289 U CN 206846289U
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Abstract
The utility model belongs to drain valve field, and in particular to a kind of pilot-operated type steam trap valve.Including the valve body with main valve chamber, ball float is provided with the main valve chamber, the valve body upper and lower part is respectively equipped with the air inlet and leakage fluid dram that setting is communicated with the main valve chamber, apocenosis passage is also communicated between the air inlet and leakage fluid dram, retractable venthole is additionally provided with the middle and upper part cavity wall of the main valve chamber, the air inlet is provided with for apocenosis passage described in folding and connected with the main valve plug for the throttle pipe for being used to ventilate being coaxially disposed with the air inlet, the throttle pipe through the main valve plug inside and outside the main valve plug.The application connects the design that apocenosis passage carries out guide's ability of swimming between air inlet and liquid outlet, substantially increases the load capacity of valve body, valve body or is adapted to be applied to high pressure place.The throttle pipe of the application can effectively suppress steam pulsation, reduce ball float vibration, extend its working life.
Description
Technical field
The utility model belongs to drain valve field, and in particular to a kind of pilot-operated type steam trap valve.
Background technology
Drain valve is widely used in oil, chemical industry, nuclear power, industry of artificial boards, using and its extensively.Drain valve is made substantially
With being to discharge the condensate in vapour system, air and carbon dioxide as early as possible；It is automatically prevented from steaming to greatest extent simultaneously
The leakage of vapour.The quality of drain valve is to environmental protection with saving most important, the influence especially to energy-conservation, and particularly pertinent, it is designed
The always focus of the sector research.The drain valve that we use at present still have part be to rely on import, but the localization rate of parts and components by
Step improves.
Drain valve plays block steam and drain water effect in steam-heating system, selects suitable drain valve, can heat steam
Equipment reaches highest operating efficiency.Drain valve wants energy " identification " steam and condensate, can just play block steam and drain water effect." identification "
Steam and condensate are based on three principles：Density contrast, temperature difference and phase transformation.Then three types just are produced according to three principles
Drain valve：It is categorized as mechanical type, heat static force type, heat power type.Heat power type steam trap, due in structure and on operating principle
The reason for, water, vapour are arranged together, malfunction it is more, in the absence of water also can steam discharge, cause largely give birth to steam wastes
Fragile, service life is short.And mechanical type drain valve（The full ball float of such as lever, reverse bucket）Structure is simpler, the original such as long lifespan
Cause, it is widely used in a variety of applications.Illustrate its operation principle by taking lever floating ball type draining valve as an example.
（Such as Fig. 6）Condensed water enters valve body from import, and water level rises in valve, and ball float also floats therewith.Floss hole passes through floating
Club is connected with ball float, and as condensed water increases, ball float rises, and is gradually opened drain valve.The aperture size of valve is according to cold in valve
Solidifying water level regulation, and can continuously discharge any load condensed water in maximum condensed water discharge capacity.The valve " F " in drain valve cold conditions
It is full opening of, air is just easy to be discharged in a machine stage.When steam enters drain valve, temperature raises, and device " E " is swollen
It is swollen, promote valve " F " to valve seat " G ", steam can not just leak.In the air accumulation that the operation phase enters in valve on the top of valve,
Because the temperature of air is relatively low, just shrink device " E ", air is just discharged.
Existing subject matter is that ball valve easily wears in the presence of steam pulsation, and the leakage increase of steam, is compeled
Enterprise is set to be changed without new drain valve, in addition, its operating pressure born is smaller.
Utility model content
The purpose of this utility model is to provide a kind of pilot-operated type steam trap valve to solve the above problems.
Above-mentioned technical purpose of the present utility model technical scheme is that：
A kind of pilot-operated type steam trap valve, including the valve body with main valve chamber, the main valve chamber is interior to be provided with ball float, the valve
Body upper and lower part is respectively equipped with the air inlet and leakage fluid dram that setting is communicated with the main valve chamber, the air inlet and leakage fluid dram it
Between be also communicated with apocenosis passage, retractable venthole is additionally provided with the middle and upper part cavity wall of the main valve chamber, on the air inlet
Provided with for apocenosis passage described in folding and with the air inlet be coaxially disposed be used for ventilate throttle pipe main valve
Core, the throttle pipe are connected inside and outside the main valve plug through the main valve plug.
Preferably, the inner being connected on the air inlet with the main valve chamber is provided with spacing collar, the throttle pipe passes through
The spacing collar, interior be coaxially provided with the throttle pipe of the main valve plug are opened on the inner reseting groove of main valve plug, the throttling
Both ends are arranged with pipe and bear against the spring on spacing collar lateral surface and reseting groove groove bottom.
Preferably, the air inlet includes small-bore outer section and heavy caliber and the inner segment being adapted to main valve plug, it is described
Inner segment is located at the top of the apocenosis passage, the main valve plug withstood under the force of a spring in no liquid pressure inner segment and
So as to blocking the upper port of apocenosis passage on the primary valve with limit rank formed between outer section.
Preferably, it is installed with the pin joint for being hinged with connecting rod, the connecting rod other end in cavity wall in the main valve chamber
Ball float is connected, is connected with the middle part of the connecting rod and is risen or fallen with the lifting of ball float to control the folding of the inner folding of leakage fluid dram
Plug.
Preferably, the main valve chamber inner bottom part is provided with the draining position pair chamber with the valve for being opened on top, the master
Valve pocket is connected by draining position pair chamber with the leakage fluid dram, and the folding plug is corresponding with the opening of the draining position pair top of chamber
Control bound intracavity liquid is coordinated to be flowed out from draining position pair chamber.
Preferably, the opening of the draining position pair top of chamber is provided with and set some are enclosed centered on opening center leads
Bar, the folding plug at least bottom are located between the guide rod and can moved up and down along guide rod.
Preferably, the venthole is provided with exhaust-valve, the exhaust-valve is bimetallic plate valve, the bimetallic plate valve
Including the ring flange with through hole corresponding with venthole being fixedly arranged on venthole, ring flange is fixedly arranged on and in main valve chamber
Support frame, the folded sheet metal set of the two panels being fixedly arranged on support frame as described above, be fixedly arranged on sheet metal and on companion flange disk
Through hole sets and can be according to the valve port plug being opened or blocked to through hole of expanding with heat and contract with cold of sheet metal.
The design of bimetal leaf is to be deformed by the different sheet metal of the two panels coefficient of expansion in temperature change, drives valve port
Plug works.
Preferably, the venthole is located at the main valve chamber cavity wall side relative with the air inlet, the air inlet and
Liquid outlet is located at the same side of the main valve chamber.
Preferably, the main valve chamber cavity wall middle and upper part is further opened with passage, the passage is provided with reverse ventilation
Valve, the reverse ventilation valve include the vent valve seat with the plug chamber communicated with passage, are arranged in the vent valve seat
Breather valve support frame towards on the seat surface at main valve chamber center, the two panels parallel with the seat surface being fixedly arranged on support frame as described above
The folded breather valve sheet metal set, located at the breather valve plug of the plug intracavitary, is arranged on the seat surface and both ends connects respectively
The valve rod of air valve plug and breather valve sheet metal is connected, and is connected to the return-air that valve body is outer and is connected with the passage
Pipe；Be provided with the seat surface communicated with the plug chamber setting be used for through the valve rod and bore be more than the stem diameter
Ventilation valve port.
The opening and closing movement of reverse ventilation valve just with exhaust-valve on the contrary, when main valve chamber be sent into steam when breather valve sheet metal by
Thermal expansion deformation extrapolates valve rod, so that breather valve plug no longer blocks ventilation valve port, leads into the steam in main valve chamber
Cross muffler and send back to vapour system, more save, while also ensure that the steam constant temperature in main valve chamber circulates, reduce because of main valve
The number increase of main valve plug folding caused by the steam of intracavitary itself cools, further reduces the loss of steam, and device
The damage brought is moved, extends the service life of device.
Preferably, the top of the main valve chamber is to be wrapped successively from inside to outside outside provided with Manual drain valve, the muffler
It is covered with heat-insulation layer and thermal insulation layer.
What the setting of said structure ensured to send vapour system back to is steam rather than condensate, improves the utilization rate of steam,
Steam can be sent back to most short distance most short muffler as far as possible during design, further reduce thermal loss.
Preferably, the main valve plug includes the thicker leading portion being adapted to the inner segment internal diameter and thinner back segment, institute
State be evenly equipped with back segment outer wall it is some along main valve plug it is axially arranged be used to be adapted to consolidate main valve plug with the inner segment wall
Reciprocating sliver, forms flow increasing passage between adjacent sliver, and the length of the leading portion is less than the apocenosis passage upper port
Diameter, be additionally provided with the wall of the inner segment top positioned at apocenosis passage close to the top of main valve chamber side be used to prevent it is described
The rear end face of leading portion excessively moves the limiting section for make it that apocenosis passage is not communicated with the inner segment to main valve chamber side.
The setting of the leading portion and sliver that are adapted to inner segment bore, ensure that main valve plug stably moved back and forth along inner segment,
It is not easy in turn ensure that the gas-liquid all when primary valve is opened not only can be from apocenosis passage, throttle pipe while the transposition of fault ground
By can also be from flow increasing passage by so as to further increasing flow, improving the present apparatus my load capacity, improving
Discharge opeing efficiency.The setting of limiting section ensures that leading portion will not block the part of the side of the close main valve chamber of inner segment, to ensure to increase
Circulation road can get up the effect of aeration liquid.
In summary, the utility model has the advantages that：
1st, the application connects the design that apocenosis passage carries out guide's ability of swimming between air inlet and liquid outlet, substantially increases valve
The load capacity of body, valve body or is adapted to be applied to high pressure place.
2nd, the throttle pipe of the application can effectively suppress steam pulsation, reduce ball float vibration, extend its working life.
3rd, the design of manual service valve can be used for emergent occasion and fault detect.
4th, using the temperature sensing and exhaust-valve of bimetal leaf, be advantageous to empty the air in steam.
5th, the drain valve of the application is simple in construction, ingenious, and block steam and drain water effect is good, efficiency high, and waste of steam is few, is not easy to let out
Leakage, part are hardly damaged, service life length.
6th, the application is when big flow condensate is under self gravitation, steam pressure and firmly the throttling mouth of pipe is made due to water seal
When steam condensation produces the negative pressure in main valve chamber in into main valve chamber, main valve plug is pushed away into main valve chamber, and main valve plug overcomes spring pressure
Power moves to main valve chamber, opens valve port, and water quickly can flow away from apocenosis passage, meanwhile, part water and steam can be with pressure from section
Flow tube enters main valve chamber, and when temperature is less than bimetal leaf design temperature, exhaust-valve is opened, and air is discharged, when being filled in main valve chamber
During full steam, exhaust-valve is closed, and the steam pressure in main valve chamber gradually rises, when the pressure of main valve plug both sides is equal, in bullet
In the presence of spring force, main valve plug is closed, and completes draining resistance vapour effect.Now, if a small amount of condensate is produced in pipeline, it is not enough to
Main valve plug is opened, then a small amount of condensate flows directly into main valve chamber, and when reaching a certain amount of, ball float lifts, and opens main valve chamber row
Liquid valve port so that pressure is reduced rapidly in main valve chamber, and negative pressure opens primary spools, and substantial amounts of water is drained by primary valve, main
Valve pocket ball float declines, and blocks steam discharge valve port, main valve cavity pressure rises again so that main valve plug is closed.
Brief description of the drawings：
Fig. 1 is the application structural representation；
Fig. 2 is exhaust-valve i.e. bimetal leaf valve arrangement schematic diagram；
Fig. 3 is reverse ventilation valve arrangement schematic diagram；
Fig. 4 is the main valve plug assembling structure schematic diagram for having front and rear sections；
Fig. 5 is the main valve plug structural representation for having front and rear sections；
Fig. 6 is existing drain valve structural representation;
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
This specific embodiment is only to explanation of the present utility model, and it is not to limitation of the present utility model, this area
Technical staff can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but only
All to be protected in right of the present utility model by Patent Law.
Embodiment one：
A kind of pilot-operated type steam trap valve, including the valve body with main valve chamber 13, the main valve chamber is interior to be provided with ball float 7, institute
State valve body upper and lower part and be respectively equipped with the air inlet 1 and leakage fluid dram 10 that setting is communicated with the main valve chamber, the air inlet with
Apocenosis passage 12 is also communicated between leakage fluid dram, retractable venthole, institute are additionally provided with the middle and upper part cavity wall of the main valve chamber
State air inlet be provided with for apocenosis passage described in folding and with the air inlet be coaxially disposed be used for ventilate section
The main valve plug 2 of flow tube 4, the throttle pipe are connected inside and outside the main valve plug through the main valve plug.
The inner being connected on the air inlet with the main valve chamber is provided with spacing collar 101, and the throttle pipe passes through the limit
Position circle, interior be coaxially provided with the throttle pipe of the main valve plug is opened on the inner reseting groove 21 of main valve plug, on the throttle pipe
It is arranged with both ends and bears against the spring 3 on spacing collar lateral surface and reseting groove groove bottom.
The air inlet includes small-bore outer section and heavy caliber and the inner segment being adapted to main valve plug, the inner segment are located at
At the top of the apocenosis passage, the main valve plug withstands on shape between inner segment and outer section under the force of a spring in no liquid pressure
Into the primary valve 11 with limit rank on so as to blocking the upper port of apocenosis passage.
The pin joint for being hinged with connecting rod 8 is installed with cavity wall in the main valve chamber, the connecting rod other end connects ball float,
It is connected with the middle part of the connecting rod and is risen or fallen with the lifting of ball float to control the folding plug 81 of the inner folding of leakage fluid dram.
The main valve chamber inner bottom part is provided with the draining position pair chamber 131 with the valve 9 for being opened on top, and the main valve chamber leads to
Cross draining position pair chamber to be connected with the leakage fluid dram, the opening corresponding matching control of the folding plug and the draining position pair top of chamber
Main valve intracavity liquid processed flows out from draining position pair chamber.
Embodiment two：
Unlike the embodiments above be in is provided with exhaust-valve 6 in the venthole, and the exhaust-valve is bimetallic plate valve.
The ring flange 61 with through hole corresponding with venthole that bimetallic plate valve includes being fixedly arranged on venthole is stated, is fixedly arranged on ring flange
And the support frame 62 in main valve chamber, the folded sheet metal 63 set of the two panels being fixedly arranged on support frame as described above, it is fixedly arranged on sheet metal
Through hole on upper and companion flange disk sets and can be according to the valve port being opened or blocked to through hole of expanding with heat and contract with cold of sheet metal
Plug 64.
The design of bimetal leaf is to be deformed by the different sheet metal of the two panels coefficient of expansion in temperature change, drives valve port
Plug works.
The venthole is located at the main valve chamber cavity wall side relative with the air inlet, and the air inlet and liquid outlet are located at
The same side of the main valve chamber.
Embodiment three：
Unlike the embodiments above be in the top of the main valve chamber is provided with Manual drain valve.
Example IV：
It is unlike the embodiments above to be in the opening in the draining position pair top of chamber provided with centered on opening center
Some guide rods 132 set are enclosed, the folding plug at least bottom is located between the guide rod and can moved up and down along guide rod.
Embodiment five：
Unlike the embodiments above be in includes the thicker leading portion 201 being adapted to the inner segment internal diameter in the main valve plug
Thinner back segment 202, be evenly equipped with the back segment outer wall it is some along main valve plug it is axially arranged be used for and the inner segment wall
Adaptation forms flow increasing passage 23, the length of the leading portion to consolidate the reciprocating sliver 22 of main valve plug between adjacent sliver
Less than the diameter of the apocenosis passage upper port, it is additionally provided with the wall of the inner segment top positioned at apocenosis passage close to main valve chamber one
The top of side is used to prevent the rear end face of the leading portion from excessively moving to main valve chamber side to cause apocenosis passage and the inner segment
The limiting section 24 being not communicated with.
The setting of the leading portion and sliver that are adapted to inner segment bore, ensure that main valve plug stably moved back and forth along inner segment,
It is not easy in turn ensure that the gas-liquid all when primary valve is opened not only can be from apocenosis passage, throttle pipe while the transposition of fault ground
By can also be from flow increasing passage by so as to further increasing flow, improving the present apparatus my load capacity, improving
Discharge opeing efficiency.The setting of limiting section ensures that leading portion will not block the part of the side of the close main valve chamber of inner segment, to ensure to increase
Circulation road can play a part of aeration liquid.
Above-mentioned drain valve operation principle is：
Empty stage：It is that cold conditions condenses water and air when start-up operation, in pipeline, in the presence of pipeline pressure, enters
Enter in air inlet 1, active force is added on main valve plug 2, and main valve plug overcomes the effect of the spring force of spring 3 to move right, drain valve
Collector pipe is typically connect outside, primary valve 11 is opened, and condensation water and air enters the collector pipe of outside by leakage fluid dram 10.It is same with this
When, condensation water and air is entered by throttle pipe 4 in the main valve chamber of ball float 7, and condensed water causes ball float 7 to float, and valve 9 is beaten
Open, liquid is discharged also by apocenosis passage 2.To avoid sealing gland phenomenon, when temperature is low, bimetal leaf 6 is in open and flat shape
State, the valve at exhaust-valve 6 are opened, and air is discharged, and realize quick start.
The only vapour stage：After water and air emptying is condensed, steam enters air inlet 1, enters simultaneously also by throttle pipe 4 floating
In the main valve chamber of ball 7, bimetal leaf receives steam heat deformation, and the hole at 6 is closed, ball float at this moment because liquid level it is low also under
Heavy, valve port 9 is also closed, and after the pressure balance of the left and right sides of main valve plug 2, main valve plug 2 is under the active force of spring 3 by valve element
It is tightly pressed on valve port, steam is also enclosed.
Exhaust phase：When the condensate of heat has been gathered in pipeline, water inlet is condensed water seal.The steaming of main valve chamber
Vapour condenses, and forms negative pressure, and condensed water enters main valve chamber, meanwhile, ball float floats in the presence of condensate, and valve port 9 is opened, main valve
The pressure of chamber is reduced rapidly, and under steam pressure, main valve plug 2 moves right rapidly, and primary valve is opened, and condensate is discharged.Steam
Vapour is again unimpeded to enter main valve chamber, and main valve plug is closed again.While condensate discharges, steam restarts to enter drain valve, newly
A cycle start again.By calculating design valve port always below condensate liquid level, i.e., the water in main valve chamber is not
Flow also valve port when more than valve port and mended closing, so as to form water seal always, ensure no steam leakage.
Emptying：If mixing air and carbon dioxide in main valve chamber, temperature is also lower than steam, and at this moment bimetal leaf moves
Make, exhaust-valve will discharge air.
Embodiment six：
Unlike the embodiments above be in is further opened with passage in the main valve chamber cavity wall middle and upper part, on the passage
Provided with reverse ventilation valve 601, the reverse ventilation valve includes the vent valve seat with the plug chamber 6011 communicated with passage
6012, it is arranged in the vent valve seat towards the breather valve support frame 6015 on the seat surface 6013 at main valve chamber center, is fixedly arranged on
The folded breather valve sheet metal 6016 set of the two panels parallel with the seat surface on support frame as described above, located at the logical of the plug intracavitary
Air valve plug 6017, is arranged on the seat surface and both ends connect the valve rod of breather valve plug and breather valve sheet metal respectively
6018, and it is connected to the muffler 6019 that valve body is outer and is connected with the passage；Be provided with the seat surface with it is described
Plug chamber communicates the ventilation valve port 6014 for being used to be more than through the valve rod and bore the stem diameter of setting.
The opening and closing movement of reverse ventilation valve just with exhaust-valve on the contrary, when main valve chamber be sent into steam when breather valve sheet metal by
Thermal expansion deformation extrapolates valve rod, so that breather valve plug no longer blocks ventilation valve port, leads into the steam in main valve chamber
Cross muffler and send back to vapour system, more save, while also ensure that the steam constant temperature in main valve chamber circulates, reduce because of main valve
The number increase of main valve plug folding caused by the steam of intracavitary itself cools, further reduces the loss of steam, and device
The damage brought is moved, extends the service life of device.
Heat-insulation layer 602 and thermal insulation layer 603 are coated with successively from inside to outside outside the muffler.The setting of said structure ensures
Send vapour system back to is steam rather than condensate, improves the utilization rate of steam, during design can as far as possible with it is most short away from
Steam is sent back to from i.e. most short muffler, further reduces thermal loss.
Claims (10)
1. a kind of pilot-operated type steam trap valve, including with main valve chamber（13）Valve body, is provided with ball float in the main valve chamber（7）,
It is characterized in that：The valve body upper and lower part is respectively equipped with the air inlet that setting is communicated with the main valve chamber（1）And leakage fluid dram
（10）, apocenosis passage is also communicated between the air inlet and leakage fluid dram（12）, also set in the middle and upper part cavity wall of the main valve chamber
There is retractable venthole, the air inlet is provided with for apocenosis passage described in folding and had coaxial with the air inlet
The throttle pipe for being used to ventilate set（4）Main valve plug（2）, the throttle pipe is in the main valve plug connection main valve plug
Outside.
A kind of 2. pilot-operated type steam trap valve according to claim 1, it is characterised in that：On the air inlet with the main valve
The inner of chamber connection is provided with spacing collar（101）, the throttle pipe passes through the spacing collar, in the main valve plug with the throttle pipe
It is coaxially provided with and is opened on the inner reseting groove of main valve plug（21）, both ends, which are arranged with, on the throttle pipe bears against outside spacing collar
Spring on side and reseting groove groove bottom（3）.
A kind of 3. pilot-operated type steam trap valve according to claim 2, it is characterised in that：The air inlet includes small-bore
Outer section and heavy caliber and the inner segment being adapted to main valve plug, the inner segment are located at the top of the apocenosis passage, and the main valve plug exists
The primary valve with limit rank that is formed is withstood between inner segment and outer section during no liquid pressure under the force of a spring（11）On
So as to block the upper port of apocenosis passage.
A kind of 4. pilot-operated type steam trap valve according to claim 1, it is characterised in that：It is solid in cavity wall in the main valve chamber
Provided with being hinged with connecting rod（8）Pin joint, the connecting rod other end connects ball float, the liter with ball float is connected with the middle part of the connecting rod
Drop is risen or fallen to control the folding plug of the inner folding of leakage fluid dram（81）.
A kind of 5. pilot-operated type steam trap valve according to claim 4, it is characterised in that：The main valve chamber inner bottom part is provided with tool
There is the valve for being opened on top（9）Draining position pair chamber（131）, the main valve chamber passes through draining position pair chamber and the leakage fluid dram and connects
Connect, the opening corresponding matching control bound intracavity liquid of the folding plug and the draining position pair top of chamber is from draining position pair chamber
Outflow.
A kind of 6. pilot-operated type steam trap valve according to claim 5, it is characterised in that：The draining position pair top of chamber is opened
Mouth is provided with some guide rods for enclosing and setting centered on opening center（132）, the folding plug at least bottom is located at the guide rod
Between and can be moved up and down along guide rod.
A kind of 7. pilot-operated type steam trap valve according to claim 1, it is characterised in that：The venthole is provided with exhaust-valve
（6）, the exhaust-valve is bimetallic plate valve, the bimetallic plate valve include being fixedly arranged on venthole have it is corresponding with venthole
Through hole ring flange（61）, it is fixedly arranged on ring flange and the support frame in main valve chamber（62）, it is fixedly arranged on support frame as described above
The folded sheet metal set of two panels（63）, it is fixedly arranged on sheet metal and the through hole on companion flange disk is set and can be according to sheet metal
Expand with heat and contract with cold the valve port plug opened or blocked to through hole（64）.
A kind of 8. pilot-operated type steam trap valve according to claim 7, it is characterised in that：The main valve chamber cavity wall middle and upper part is also
Passage is offered, the passage is provided with reverse ventilation valve（601）, the reverse ventilation valve include have and passage phase
Logical plug chamber（6011）Vent valve seat（6012）, it is arranged in the vent valve seat towards the seat surface at main valve chamber center
（6013）On breather valve support frame（6015）, the two panels parallel with the seat surface that is fixedly arranged on support frame as described above be folded set it is logical
Air valve sheet metal（6016）, located at the breather valve plug of the plug intracavitary（6017）, it is arranged on the seat surface and both ends is divided
Not Lian Jie breather valve plug and breather valve sheet metal valve rod（6018）, and be connected to outside valve body and communicated with the passage
The muffler of connection（6019）；It is provided with the seat surface and being used for through the valve rod and bore of setting is communicated with the plug chamber
More than the ventilation valve port of the stem diameter（6014）.
A kind of 9. pilot-operated type steam trap valve according to claim 8, it is characterised in that：The top of the main valve chamber be provided with
Manual drain valve, the muffler are coated with heat-insulation layer successively from inside to outside outside（602）And thermal insulation layer（603）.
A kind of 10. pilot-operated type steam trap valve according to claim 3, it is characterised in that：The main valve plug include with it is described
The leading portion of inner segment internal diameter adaptation（201）And back segment（202）, it is evenly equipped with the back segment outer wall some axially arranged along main valve plug
For being adapted to the inner segment wall to consolidate the reciprocating sliver of main valve plug（22）, flow increasing is formed between adjacent sliver and is led to
Road（23）, the length of the leading portion is less than the diameter of the apocenosis passage upper port, position is additionally provided with the wall of the inner segment top
Excessively moved in the rear end face that is used to prevent the leading portion of the apocenosis passage close to the top of main valve chamber side to main valve chamber side
So that the limiting section that apocenosis passage is not communicated with the inner segment（24）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720423823.4U CN206846289U (en) | 2017-04-21 | 2017-04-21 | A kind of pilot-operated type steam trap valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720423823.4U CN206846289U (en) | 2017-04-21 | 2017-04-21 | A kind of pilot-operated type steam trap valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206846289U true CN206846289U (en) | 2018-01-05 |
Family
ID=60793889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720423823.4U Expired - Fee Related CN206846289U (en) | 2017-04-21 | 2017-04-21 | A kind of pilot-operated type steam trap valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206846289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061981A (en) * | 2017-04-21 | 2017-08-18 | 湖州职业技术学院 | A kind of pilot-operated type steam trap valve |
-
2017
- 2017-04-21 CN CN201720423823.4U patent/CN206846289U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061981A (en) * | 2017-04-21 | 2017-08-18 | 湖州职业技术学院 | A kind of pilot-operated type steam trap valve |
| CN107061981B (en) * | 2017-04-21 | 2023-11-17 | 湖州职业技术学院 | Pilot-operated steam trap |
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Granted publication date: 20180105 Termination date: 20200421 |