CN109268512A - A kind of device and method of butterfly valve heating - Google Patents
A kind of device and method of butterfly valve heating Download PDFInfo
- Publication number
- CN109268512A CN109268512A CN201811373130.4A CN201811373130A CN109268512A CN 109268512 A CN109268512 A CN 109268512A CN 201811373130 A CN201811373130 A CN 201811373130A CN 109268512 A CN109268512 A CN 109268512A
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- valve body
- heating tube
- thermocouple
- heating
- butterfly valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/002—Electric heating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
A kind of device and method of butterfly valve heating, belongs to mechanical engineering technical field.The device is processing Ω connected in star close to the valve body inner convex platform side of butterfly plate and valve body sealing surface, heating tube is installed in groove, and it is at same plane in the middle part of side of valve body with groove and opens 2 heating pipe holes, heating tube and both ends straight section distinguish extraction wire, it is connect with external power supply, heating tube fixture nut is bonded by heating tube and with valve body, and passes through heating tube gasket seal.A counterbore is opened in the side of inner convex platform in the middle part of the valve body other side, and outside aperture runs through valve body on valve body, and thermocouple attachment base is welded in outer surface, and thermocouple passes through thermocouple junction and valve body from outside to inside, is bonded in insertion counterbore with valve body, for measuring valve body temperature.When heating tube electrified regulation, valve body temperature reaches required temperature and when butterfly valve can be opened can cut off the power.Structure of the invention is compact easy to operate, and the safeguards system that can debug online operation improves working efficiency and security performance.
Description
Technical field
The invention belongs to mechanical engineering technical fields, are related to a kind of device and method of butterfly valve heating.
Background technique
At present in many chemical systems, butterfly valve is due to the advantages that structure length is short, light-weight, cost performance is high frequent conduct
Fluid control elements are a kind of relatively common valves.In the pipeline conveyed for gas, including vacuum pipe, butterfly valve are
Most common valve.
In certain chemical reaction system, the product of reaction is the mixture of multiple gases, including room temperature condensable gas
Iodine.This iodine vapor is gas when high temperature, declines with temperature and becomes liquid and solid, when room temperature as hard solid.
The pipeline of gas circulation is equipped with butterfly valve control flow, and iodine vapor will be coagulated in inner wall of the pipe and butterfly valve inner surface after longtime running
Knot, the sealing surface including butterfly valve body and butterfly plate, the time is longer, and iodine condensation is thicker.After butterfly valve is closed the iodine that condenses by butterfly plate with
Valve body bonding, after iodine is condensed into solid, butterfly plate is combined closely with valve body and can not be opened, it is necessary to repair after replacement, usually make
Iodine can just be dissolved with chemical reagent immersion, so that butterfly valve could be opened.This failure seriously affects system operation, or even draws
Send out safety accident.
The property for increasing and being converted into liquids and gases with temperature according to solid iodine can be arranged heating and be surveyed inside butterfly valve
Warm element, electrified regulation and application valve body temperature melt after can heating the solid iodine condensed between butterfly plate and valve body, reduce butterfly
The binding force of plate and valve body, so that butterfly plate be made to be easily separated from and can open with valve body, debugging safeguards system operation is improved
Working efficiency and security performance.
Summary of the invention
The present invention provides a kind of device and methods of butterfly valve heating, solve in the pipeline to circulate containing condensable gas
The problem of butterfly valve of middle installation is caused butterfly plate Nian Jie with valve body and can not be opened due to gas condensation, keep the butterfly valve to break down easy
In opening, safeguards system is operated normally.
It is heated, which to be based on substance, for the butterfly valve heating device to be liquid and gaseous Transformation Principle by Solid State Transformation, when being installed on
For butterfly valve in gas transmission pipeline containing coercibility substance due to gas cooling coercibility mass sets, butterfly plate is Nian Jie with valve body
When can not open, the material melts of condensation are made to reduce bonding force to make butterfly valve open by valve body heating.By taking iodine as an example, room temperature
It is down furvous solid, becomes liquid when being heated to 113.7 DEG C, become gas when being again heated to 184.3 DEG C, otherwise high temperature
Gas iodine also can gradually become liquid and solid with temperature reduction.After butterfly valve is closed, retained in gap between butterfly plate and valve body
Iodine due to temperature reduce and be converted into solid, be equivalent to binder and butterfly plate combined closely with valve body and can not be opened.Many institutes
Known solid is harder, and liquids and gases have a mobility, therefore using the principle of the heated liquefaction of solid iodine or vaporization,
The sealing surface of valve body and butterfly valve is heated to 113.7 DEG C or more, melts the iodine between butterfly plate and valve body in gap, reduce butterfly plate with
The binding force of valve body, butterfly plate are easily separated from i.e. openable with valve body.The device is in the valve body close to butterfly plate and valve body sealing surface
Process groove at inner convex platform, and open 2 holes perpendicular to the direction of main shaft in side of valve body, with groove be in same plane and with
It is to be connected.Both ends are with screw thread and are welded with the heating tube of retaining ring and are placed in groove, and both ends are stretched out from the hole of side of valve body,
Gasket is installed, 2 heating tube fixture nuts are inserted in heating tube both ends respectively and are twisted between the retaining ring and valve interior surface of heating tube
Tightly.A counterbore is bored close to groove in the valve body other side opposite with heating tube fairlead, and valve body also bores a hole and outward in this hole
Place's welding thermocouple junction, the thermocouple of thermometric pass through thermocouple junction out of export-oriented valve body, and end is inserted into heavy near groove
For measuring the temperature of valve body metal in hole.
In order to achieve the above object, The technical solution adopted by the invention is as follows:
The butterfly valve heating device is mainly coupled by heating tube, heating tube gasket, heating tube fixture nut, thermocouple, thermoelectricity
Joint chair, thermocouple gasket, thermocouple pressure head and thermocouple pressure cap composition, core element is heating tube and thermocouple.Common butterfly
Valve is mainly made of valve body, butterfly plate, main shaft, main shaft connection bolt and executing agency, and airflow direction is perpendicular to valve body plane and master
Axis, butterfly plate can be rotated by 90 ° around main-shaft core, be in an open state when butterfly plate is rotated to valve body face upright position, gas is just
Can the gap between valve body and main shaft and butterfly plate flow through, conversely, when butterfly plate is rotated to valve face parallel butterfly valve be in close
State completely cuts through gas flowing.In order to process the requirement of sealing surface, valve body is designed to structure of the part to contract, shape
At an inside boss, as sealing surface corresponding with butterfly plate after the processing of boss annular inner surface.
The technical scheme is that being improved on the basis of original butterfly valve, keep original valve function constant, no
Influence former butterfly valve normal switch operation.The present invention specifically:
A groove is processed in the valve body inner convex platform other end opposite with main shaft, heating tube is installed in the groove.It is described
Groove be Ω connected in star, as close as possible to the sealing surface of butterfly plate and valve body, the depth of groove is identical as pipe diameter is heated, and bottom is
Semicircle identical with heating tube section, in order to be fixed on heating tube in groove, the width of groove is more smaller than heating pipe diameter,
This also fits closely heating tube with valve body, is conducive to that heating tube is thermally conductive, the center of groove arc and valve body center overlapping of axles.For
The power lead of heating tube is drawn into valve body convenient for connection power supply, is equipped with 2 perpendicular to the position of main shaft in the middle part of side of valve body
Hole, the center line in hole and the centerline of groove in same plane, and with groove connection, form the channel of a Ω shape, Kong Zhi
Diameter is greater than heating pipe diameter.For the sealing of heating tube and valve body, it is parallel in airflow direction and main shaft in the middle part of butterfly valve body
2 planes are processed at the extrados and intrados of heart line, depth can make the side of heating tube fixture nut and heating tube gasket flat
Face is bonded completely with it, i.e., the part that outer surface is located at heating pipe hole in valve body circle need to be processed as plane by arc-shaped, is added
Work depth need to only guarantee when heating tube gasket and heating tube fixture nut are installed in plane.The heating tube is a Ω
The open type ring-type heating tube of shape, shape and the recess channels that valve body is processed are completely the same, and heating tube both ends draw one respectively
Root conducting wire, connect with external power supply；The straight section at heating tube both ends is drawn in corresponding 2 holes in the middle part of butterfly valve body, heating tube
Gasket is placed between heating tube retaining ring and butterfly valve body, and heating tube fixture nut rotation set is in heating tube straight section and fastens.It is described
Heating tube both ends straight section and arc-shaped joint be welded with annular retaining ring, the two is integrally connected, straight section outer surface process screw thread.
2 heating tube gaskets are first inserted in heating tube both ends straight section respectively when installation to be bonded with annular retaining ring, by heating tube both ends straight section
It is drawn from the heating pipe hole of valve body, heating tube is integrally put into the recess channels of valve body boss and is fitted closely with valve body.Add
Heat pipe fixture nut is inserted in heating tube straight section outside valve body, is connected through a screw thread and tightens, and makes heating tube retaining ring as far as possible will pad
Piece compresses, and prevents gas from flowing out out of valve body.
In valve body across the thermocouple equipped with thermometric in the middle part of the corresponding other side of main shaft, the same side is in heating pipe hole
Face.Need to measure the temperature of institute's heating valve body region when obvious heating tube electrified regulation, it is otherwise lasting to be powered that be not controlled
So valve body is caused to overheat, also lead to valve or heating tube damage, the purpose of temperature element is monitoring valve body temperature to control
The time that heating tube is powered.The thermocouple is a hollow thin metal pipe flexible, and one end is equipped with temperature element and encapsulates,
For connecting display instrument, length is not fixed other end extraction wire, can be customized as needed.It is located at boss end in the middle part of valve body
Perpendicular to valve axis aperture, thermocouple attachment base connects with valve body circumferential outer surface for position other than face, center line and heat
The center line in galvanic couple hole is overlapped, and with valve outer surface by being welded to connect one.Along valve axis on valve body inner convex platform end face
Direction drilling, depth are the half of boss thickness, and diameter is more bigger than thermocouple diameter, this counterbore center is located in thermocouple hole
Heart line extends internally on line, and close with the edge of heating tube groove as far as possible.Thermocouple temperature measurement end passes through thermocouple from outside to inside
Attachment base and valve body hole, in 90 ° of insertion counterbores of top thermometric position bending, top is bonded with counterbore base.Thermocouple temperature measurement end
Thermocouple pressure cap thermoelectric couple attachment base screws after fixation, by thermocouple pressure head and thermocouple gasket thermoelectric couple attachment base pressure
Tightly, prevent gas from flowing out from thermocouple hole.2 leads and display instrument of the thermocouple other end are correspondingly connected with displays temperature.
The method heated using above-mentioned apparatus to butterfly valve, is included the following steps:
Heating tube both ends lead is separately connected the positive and negative anodes of power supply, 2 leads of thermocouple respectively with pair of display instrument
It answers position to connect, powers on that switch makes heating tube generate heat and passing through heat transfer increases valve body metal temperature, while monitoring temperature
The temperature for spending display instrument, cuts off the power when valve body temperature reaches necessary requirement, attempts to open butterfly valve, if still can not beat
It opens, properly increases valve body heating temperature, and again attempt to until can open butterfly valve；
The electronic components such as relay and temp controlled meter can be increased to be connect with heating tube power supply and temperature display meter to realize certainly
Dynamic temperature control automaticallys cut off the power stopping heating after valve body heating temperature reaches setting value.
The invention has effective effect that: structure of the invention is compact easy to operate, for that can have containing in condensable gas pipeline
Effect solves the problems, such as that butterfly valve in pipeline can not be opened since gas condenses, by electric heating make condensation material melts thus
Online debugging safeguards system operation, improves working efficiency and security performance.
Detailed description of the invention
Fig. 1 is general butterfly valve front view.
Fig. 2 is general butterfly valve side view.
Fig. 3 is the butterfly valve front view for increasing heating device.
Fig. 4 is the butterfly valve side view for increasing heating device.
Fig. 5 is A-A sectional view in Fig. 3.
Fig. 6 is B-B sectional view in Fig. 3.
Fig. 7 is thermocouple connection schematic diagram.
In figure: 1 valve body；2 butterfly plates；3 main shafts；4 main shafts connect bolt；5 executing agencies；6 heating tubes；7 heating tube gaskets；8
Heating tube fixture nut；9 thermocouples；10 thermocouple attachment bases；11 thermocouple gaskets；12 thermocouple pressure heads；13 thermocouple pressure caps；
14 pipe flanges；15 pipelines connect bolt；16 pipeline attaching nuts；17 pipe pads.
Specific embodiment
Specific embodiments of the present invention are described in detail below in conjunction with technical solution and Figure of description.
Embodiment 1
As depicted in figs. 1 and 2, general butterfly valve used in gas pipeline is mainly connected by valve body 1, butterfly plate 2, main shaft 3, main shaft
Connecting bolt 4 and executing agency 5 form, and executing agency 5 can be manually, electrically or pneumatic mode, butterfly valve body 1 are placed in 2
Between pipe flange 14, and pipe pad 17 is placed between pipe flange 14 and valve body 1, pipeline connects bolt 15 and passes through tube method
The bolt hole of orchid 14 and valve body 1, both ends are inserted in pipeline attaching nut 16 and are tightened, and the fluid in such pipeline will not flow out.
In order to process the requirement of sealing surface, valve body 1 is designed to structure of the part to contract, forms an inside boss, boss
As sealing surface corresponding with butterfly plate 2 after annular inner surface processing.Pipeline internal medium flow direction is perpendicular to 1 plane of valve body and master
Axis 3, butterfly plate 2 can be rotated by 90 ° around 3 center line of main shaft, as complete when 2 Plane Rotation of butterfly plate is to 1 face upright position of valve body
Opening state, medium can the gap between valve body 1 and main shaft 3 and butterfly plate 2 flow through.Conversely, when butterfly plate 2 rotation to valve body 1
When face is parallel, the circumferential sealing face of butterfly plate 2 and 1 inner convex platform circumferential sealing face paste of valve body are closed, and butterfly valve is in close state, cuts completely
Disconnected media flow.
As shown in Fig. 3, Fig. 4 and Fig. 5, in order to keep the condensation solid of valve body 1 and 2 sealing surface of butterfly plate molten using principle of heating
Change, the METAL HEATING PROCESS that heating element closes on 1 sealing surface of valve body need to be increased.In 1 inner convex platform of the valve body other end opposite with main shaft 3
Face processes a circular groove, and as close as possible to the sealing surface of butterfly plate 2 and valve body 1, the depth of groove is identical as 6 diameter of heating tube,
Width is more smaller than 6 diameter of heating tube so that heating tube 6 is fixed in groove, and bottom section is identical as 6 section radius of heating tube
Semicircle, fit closely 6 half outer surface of heating tube with valve body 1, it is thermally conductive to be conducive to heating tube 6.In the middle part of 1 side of valve body
2 parallel holes are equipped with perpendicular to the position of main shaft 3, as long as its spacing 2 heating tube fixture nuts 8 small as far as possible can all screw in heating
Pipe 6.The center line in hole and the centerline of groove in same plane, and with groove connection, form the channel of a Ω shape.
For the sealing of heating tube 6 and valve body 1, the part that outer surface is located at 6 hole of heating tube in 1 circle of valve body need to be by arc-shaped processing
For plane, working depth need to only guarantee to be bonded completely i.e. when heating tube gasket 7 and heating tube fixture nut 8 are installed with locating plane
It can.Heating tube 6 is the open type ring-type heating tube 6 of a Ω shape, and shape and the recess channels that valve body 1 is processed are completely the same.Add
A conducting wire is drawn at 6 both ends of heat pipe respectively, is connect with external power supply.6 both ends straight section of heating tube connects with 1 inner surface arc of valve body
Place is inwardly welded with annular retaining ring, and the two is integrally connected, and straight section outer surface is equipped with screw thread.First by 2 heating tube gaskets 7 when installation
It is inserted in 6 both ends straight section of heating tube respectively to be bonded with annular retaining ring, 6 both ends straight section of heating tube is drawn from 6 hole of heating tube of valve body 1
Out, it will be fitted closely in the recess channels of whole slightly external force indentation 1 boss of valve body of heating tube 6 and with valve body 1.Heating tube is fixed
Nut 8 is inserted in 6 straight section of heating tube outside valve body 1, is connected and is tightened by screw thread rotation, makes 6 retaining ring of heating tube as far as possible will pad
Piece compresses, and prevents gas from flowing out out of valve body 1.
As shown in Fig. 3, Fig. 4, Fig. 6 and Fig. 7, the thermocouple of thermometric is equipped on 1 boss of valve body with 6 groove the same side of heating tube
9, it is corresponding with 6 hole of heating tube across main shaft 3.Need to measure the temperature of 1 metal of institute's heating valve body when 6 electrified regulation of heating tube,
Otherwise be persistently powered it is uncontrolled necessarily cause valve body 1 to overheat, also lead to valve or heating tube 6 and damage.Thermocouple 9 is one
Hollow thin metal pipe flexible, one end are equipped with temperature element and seal, and other end extraction wire is grown for connecting display instrument
Degree is not fixed.Be located at the position other than raised head face in the middle part of valve body 1 perpendicular to 1 axis aperture of valve body, thermocouple attachment base 10 with
1 external connection of valve body, center line are overlapped with the center line in 9 hole of thermocouple, and pass through welded connecting with 1 outer surface of valve body.Valve
It drills on 1 inner convex platform end face of body along 1 axis direction of valve body, depth is about the half of boss thickness, and diameter is than 9 diameter of thermocouple
Bigger, this counterbore center is located at 9 centerline hole of thermocouple and extends internally on line, and close with the edge of 6 groove of heating tube as far as possible.
9 thermometric end of thermocouple passes through thermocouple pressure cap 13, thermocouple pressure head 12, thermocouple gasket 11, thermocouple attachment base from outside to inside
10 and 1 hole of valve body, in 90 ° of insertion counterbores of end bending, top is bonded with counterbore base.Thermoelectricity after 9 thermometric end of thermocouple is fixed
Even 13 thermoelectric couple attachment base 10 of pressure cap screws, and thermocouple pressure head 12 and 11 thermoelectric couple attachment base 10 of thermocouple gasket are pressed
Tightly, it since the center-hole diameter of thermocouple gasket 11 is smaller than the diameter of thermocouple 9, deforms after it is compacted to central reduction,
Closely being locked with thermocouple 9 prevents gas from flowing out from 9 hole of thermocouple.2 leads of 9 other end of thermocouple and external display instrument
It is correspondingly connected with displays temperature.
As shown in Figure 3, Figure 4,6 both ends lead of heating tube is separately connected the positive and negative anodes of power supply, 2 leads of thermocouple 9
It is connect respectively with the corresponding position of display instrument.When butterfly valve can not be opened since the condensation of coercibility substance is bonded sealing surface
When, powering on makes heating tube 6 generate heat and increases 1 metal temperature of valve body by heat transfer, while monitoring temperature instrument is shown
Temperature.It cuts off the power when 1 temperature of valve body that instrument is shown reaches necessary requirement, then attempts to open butterfly valve, if still
Can not open need to properly increase 1 temperature of valve body, and again attempt to until can open butterfly valve.Add to realize to automatically control
Heat can also increase the control elements such as relay, 6 power supply of heating tube is connect with temperature control display instrument realize it is automatic temperature-controlled, when adding
Hot temperature is automatically stopped power supply after reaching setting value.
Claims (7)
1. a kind of butterfly valve heating device, it is characterised in that: the device includes that heating tube, heating tube gasket, heating tube are fixed
Nut, thermocouple, thermocouple attachment base, thermocouple gasket, thermocouple pressure head and thermocouple pressure cap；
A groove is processed backwards to the side of main shaft in the inner convex platform of butterfly valve body, electric heating tube is installed in groove；Described adds
Heat pipe shape is identical with the dimension of picture that valve body recess and side of valve body draw centerline hole formation；Heating tube both ends it is straight
Section is drawn in corresponding 2 holes in the middle part of butterfly valve body, and heating tube gasket is placed between heating tube retaining ring and butterfly valve body, is added
Heat pipe fixture nut rotation set is in heating tube straight section and fastens；A conducting wire is drawn at heating tube straight section both ends respectively, is each passed through valve
2 holes being equipped in the middle part of body side surface perpendicular to main spindle's, connect with external power supply positive and negative anodes, the center line in the hole with it is recessed
The centerline of slot in same plane, and with groove connection；Airflow direction and spindle centerline are parallel in the middle part of butterfly valve body
Extrados and intrados at process 2 planes, depth make heating tube fixture nut and heating tube gasket side plane and its
Fitting completely；
Thermocouple is installed across main shaft and heating pipe hole symmetrical position in butterfly valve body, on valve body inner convex platform with heating tube groove
The same side is equipped with survey hole of thermocouple, and the time of heating tube energization is controlled for monitoring valve body temperature；It wears from outside to inside
Thermocouple pressure cap, thermocouple pressure head, thermocouple gasket and thermocouple attachment base are crossed, valve body convex is inserted into end thermometric position bending
It in the counterbore of platform and is bonded, thermocouple pressure cap screws in thermocouple attachment base, and thermocouple pressure head and thermocouple gasket are pressed to thermoelectricity
Coupled joint chair and screwing hermetic.
2. according to heating device containing butterfly valve described in claim 1, it is characterised in that: the butterfly valve body inner convex platform is backwards to main shaft
The groove that side is equipped with is Ω connected in star, and the center of groove arc is overlapped with valve body center line, and cross-sectional width is less than heating tube
Diameter, section-bottom is semi arch identical with heating tube radius, and the depth of groove is identical as pipe diameter is heated.
3. according to heating device containing butterfly valve described in claim 1, it is characterised in that: the center line of the heating tube forms Ω
Shape, heating tube both ends straight section outer surface are machined with screw thread identical with heating tube fixture nut specification, the root of both ends straight section
Respectively it is welded with the retaining ring of a circular ring shape.
4. according to heating device containing butterfly valve described in claim 1, it is characterised in that: the survey hole of thermocouple is located at 2 and adds
Heat pipe hole symmetry axis is across on the extended line of main shaft, perpendicular to valve body center line, thermocouple attachment base center line and its center line
It is overlapped and connects with valve body extrados, thermocouple attachment base and valve body welded seal；The depth of the thermometer hole is about valve body
The 1/2 of inner convex platform thickness, center line is parallel with airflow direction.
5. according to heating device containing butterfly valve described in claim 1, it is characterised in that: the thermocouple is one flexible hollow
Thin metal pipe, one end are equipped with temperature element and encapsulate, and other end extraction wire is for connecting display instrument, and length is according to reality
It needs to be determined that.
6. the method heated according to any device of claim 1-5 to butterfly valve, it is characterised in that following steps: add
Heat pipe both ends lead is separately connected the positive and negative anodes of power supply, and 2 leads of thermocouple are connect with the corresponding position of display instrument respectively,
Power on that switch makes heating tube generate heat and passing through heat transfer increases valve body metal temperature, while monitoring temperature display instrument
Temperature；It cuts off the power when valve body temperature reaches necessary requirement, attempts to open butterfly valve, properly increase valve if it can not still open
Body heating temperature, and again attempt to until can open butterfly valve.
7. the method that device heats butterfly valve according to claim 6, which is characterized in that can also increase relay and
Temp controlled meter electronic component is connect with heating tube power supply and temperature display meter, to realize automatic temperature-adjusting control, when valve body heats
Temperature automaticallys cut off the power stopping heating after reaching setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373130.4A CN109268512A (en) | 2018-11-19 | 2018-11-19 | A kind of device and method of butterfly valve heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373130.4A CN109268512A (en) | 2018-11-19 | 2018-11-19 | A kind of device and method of butterfly valve heating |
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| CN109268512A true CN109268512A (en) | 2019-01-25 |
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| CN201811373130.4A Pending CN109268512A (en) | 2018-11-19 | 2018-11-19 | A kind of device and method of butterfly valve heating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124190A (en) * | 2021-04-21 | 2021-07-16 | 四川九天真空科技股份有限公司 | Pneumatic rotary ball valve |
| CN113216891A (en) * | 2021-04-21 | 2021-08-06 | 江苏腾龙石化机械有限公司 | Unfreezing petroleum wellhead |
| WO2022082432A1 (en) * | 2020-10-20 | 2022-04-28 | Emerson Process Management (Tianjin) Valves Co., Ltd. | Heat tracing systems for fluid valves and related methods |
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| US6296007B1 (en) * | 2001-02-14 | 2001-10-02 | Joseph Cifune | Heated valve for operation in freezing conditions |
| CN104265914A (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | Butterfly valve for mine main fan |
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| CN207161860U (en) * | 2017-08-15 | 2018-03-30 | 西安广核阀门有限公司 | A kind of liquid metal special stop valve |
| CN207848444U (en) * | 2018-01-12 | 2018-09-11 | 重庆川仪调节阀有限公司 | High-temperature molten salt automatic control and adjustment valve |
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| US6296007B1 (en) * | 2001-02-14 | 2001-10-02 | Joseph Cifune | Heated valve for operation in freezing conditions |
| CN104265914A (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | Butterfly valve for mine main fan |
| CN105422877A (en) * | 2015-12-24 | 2016-03-23 | 百吉瑞（天津）新能源有限公司 | Anti-solidification type high-temperature butterfly valve applicable to molten salt working medium |
| CN207161860U (en) * | 2017-08-15 | 2018-03-30 | 西安广核阀门有限公司 | A kind of liquid metal special stop valve |
| CN207848444U (en) * | 2018-01-12 | 2018-09-11 | 重庆川仪调节阀有限公司 | High-temperature molten salt automatic control and adjustment valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022082432A1 (en) * | 2020-10-20 | 2022-04-28 | Emerson Process Management (Tianjin) Valves Co., Ltd. | Heat tracing systems for fluid valves and related methods |
| US11852262B2 (en) | 2020-10-20 | 2023-12-26 | Emerson Process Management (Tianjin) Valve Co., Ltd. | Heat tracing systems for fluid valves and related methods |
| CN113124190A (en) * | 2021-04-21 | 2021-07-16 | 四川九天真空科技股份有限公司 | Pneumatic rotary ball valve |
| CN113216891A (en) * | 2021-04-21 | 2021-08-06 | 江苏腾龙石化机械有限公司 | Unfreezing petroleum wellhead |
| CN113216891B (en) * | 2021-04-21 | 2022-05-31 | 江苏腾龙石化机械有限公司 | Unfreezing petroleum wellhead |
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