CN207145635U - Choke valve - Google Patents
Choke valve Download PDFInfo
- Publication number
- CN207145635U CN207145635U CN201721036673.8U CN201721036673U CN207145635U CN 207145635 U CN207145635 U CN 207145635U CN 201721036673 U CN201721036673 U CN 201721036673U CN 207145635 U CN207145635 U CN 207145635U
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- Prior art keywords
- restriction portion
- duplex channel
- choke valve
- mouthful
- valve
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Abstract
The utility model provides a kind of choke valve, including：Valve seat, valve seat include first, second mouthful and connection first and second mouthful of first passage；First passage includes：The restriction portion of internal diameter gradual change, and the first paragraph and second segment connected respectively with restriction portion both ends；Valve rod, it is flexibly connected with valve seat, valve rod includes：First end outside valve seat, and coordinate located at the second end of restriction portion, the second end under first end effect with restriction portion inwall to expand or shrink the flow of restriction portion；The half-duplex channel and one-way plug one of mutual cooperation, half-duplex channel is in first passage, and, half-duplex channel both ends are respectively communicated with first paragraph and second segment with restriction portion side by side；Wherein, half-duplex channel and one-way plug one seal when fluid moves in the first direction, and in fluid along when being moved in the opposite direction with first party, half-duplex channel and one-way plug one separate.By the technical solution of the utility model, throttle-valve structure is simple, and cost is relatively low, can continuously adjust on a large scale.
Description
Technical field
Valve body technical field is the utility model is related to, in particular to a kind of choke valve.
Background technology
Throttling arrangement has an important application in many fields, for example adjusts following for refrigerant in air-conditioning system with throttle part
Ring.In existing throttling arrangement, heating power expansion valve and electric expansion valve can realize the function of continuously adjustable, but cost compared with
High and fault rate is high, it is impossible to meets reliable and stable condition；And capillary and common choke valve cost are low and reliable and stable,
But its dimensional structure determines that throttle degree is fixed, it is not possible to is adjusted.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art or correlation technique.
In view of this, the utility model provides a kind of choke valve.
To achieve these goals, the technical solution of the utility model provides a kind of choke valve, including：Valve seat, valve seat
Including first, second mouthful and connection first and second mouthful of first passage；First passage includes：The throttling of internal diameter gradual change
Section, and the first paragraph and second segment connected respectively with restriction portion both ends；Valve rod, it is flexibly connected with valve seat, valve rod includes：It is located at
First end outside valve seat, and coordinate located at the second end of restriction portion, the second end under first end effect with restriction portion inwall
To expand or shrink the flow of restriction portion；The half-duplex channel and one-way plug one of mutual cooperation, half-duplex channel are located in first passage,
With restriction portion side by side, half-duplex channel both ends are respectively communicated with first paragraph and second segment；Wherein, half-duplex channel and one-way plug one are in fluid
Sealed when being moved along first to second mouthful of first direction, when being moved in the opposite direction with first party on fluid edge, unidirectionally
Passage and one-way plug one separation.
In the technical scheme, when carrying out throttle operation, fluid is in choke valve interior edge first to second mouthful of first party
To motion, the outer surface of one-way plug one and the inwall of half-duplex channel are brought into close contact, one-way plug one closing half-duplex channel, the stream in choke valve
Body can only move in the passage that first paragraph second segment and restriction portion form, and fluid is from the end of valve rod second and valve seat in restriction portion
Flowed through in the gap of restriction portion inwall.The regulation of the end position of valve rod second can be real by the first end of the outer valve rod of regulating valve seat
It is existing, therefore pass through the position at the second end of valve rod first end regulating valve stem, you can between the end of regulating valve stem second and restriction portion inwall
Distance, so as to the cross-sectional area of fluid passage between the end of regulating valve stem second and restriction portion inwall, final realize continuously adjusts
The flow of fluid in choke valve.Simultaneously because the internal diameter of restriction portion is gradual change, therefore at the position at the end of regulating valve stem second,
Cross-sectional area between the end of valve rod second and restriction portion inwall is also gradual change, therefore can continuously be adjusted with fluid flow
Section.In addition, half-duplex channel is set in first passage so that when fluid moves in the first direction, half-duplex channel is because of both sides
Pressure official post one-way plug one is moved to second mouthful of direction, until one-way plug one is completely plugged by half-duplex channel, so that fluid can only be from
Restriction portion is by merely due to the direction of motion of fluid is to realize the significantly regulation of flow, reducing the workload of regulation, reducing
Labor intensity, improves efficiency.
When the opposite direction of the fluid in choke valve in the first direction is moved, i.e., flowed from second mouthful to first, unidirectionally
The outer wall of plug separates with the inwall of half-duplex channel, half-duplex channel connection, two passes in choke valve now be present, i.e., first end,
The passage of passage and first paragraph, half-duplex channel and the second end composition that restriction portion forms with second segment, therefore now throttle
Valve can not be entirely limited the flow of fluid in choke valve.
Wherein it is preferred to the size of the smallest cross-section area by limiting half-duplex channel, can be limited to without section indirectly
During stream, i.e., fluid in the first direction opposite direction motion flow velocity.
Wherein it is preferred to valve rod contacts with valve seat for thread seal.It can be improved to valve rod the using thread seal contact
The control accuracy of two end positions, and then choke valve is improved to the control accuracy of flow, realize the accurate tune to flow in choke valve
Section.
Throttle-valve structure is simple and reliable in the technical program, easy to operation, and all parts of choke valve are easily fabricated and make
With, pass through simple operations be can be achieved for fluid flow in choke valve continuous accurate adjustment.
In the above-mentioned technical solutions, it is preferable that the internal diameter of restriction portion, be gradually reduced along first to second mouthful.
In the technical scheme, the internal diameter of restriction portion is gradually reduced along first to second mouthful, i.e., transversal in restriction portion
Area is gradually reduced, therefore when the end of valve rod second is located at restriction portion close to the side of first, the end of valve rod second and restriction portion
The distance between inwall maximum, the cross-sectional area in restriction portion is maximum, now when fluid is transported in the first direction in choke valve
When dynamic, the maximum flow of fluid in choke valve.When the end of valve rod second is located at restriction portion close to second mouthful of side, valve rod second
End and the distance between restriction portion inwall minimum, now according to the design requirement of choke valve, the cross-sectional area of passage in restriction portion
Can be zero or a certain positive number.When the end of valve rod second is located at the centre of restriction portion, the cross-sectional area of passage exists in restriction portion
Between maximum and minimum value.Because the internal diameter of restriction portion is gradual change, therefore choke valve can realize fluid flow most
Continuously adjusted between value and minimum value greatly.
In the above-mentioned technical solutions, it is preferable that the axis of first with second mouthful of axis to be parallel to each other, restriction portion
Axis is vertical with the axis of first.
In the technical scheme, the axis and first and second mouthful of axis of restriction portion are vertical, from first and
The fluid of two mouthfuls of inflows flows directly into the inwall in first passage, and finally changing the direction of motion in the presence of inwall enters throttling
Section, impact of the fluid for restriction portion inwall and the end of valve rod second can be reduced, reduce restriction portion inwall and the end of valve rod second
Loss, improve the durability at restriction portion and the end of valve rod second, increase the service life of choke valve, also help valve rod along throttling
Section axis movement, is easy to the regulation of flow.
In the above-mentioned technical solutions, it is preferable that the shape at the second end is mutually fitted with restriction portion, the cross-sectional area edge at the second end
First is gradually reduced to second mouthful.
In the technical scheme, the shape at the end of valve rod second is mutually fitted with restriction portion, i.e. the outer surface at the end of valve rod second can
It is completely superposed with the inwall of restriction portion.When fluid moves in the first direction in choke valve, and choke valve is needed the flow of fluid
When being adjusted to zero, now by the position at the second end of valve rod first end regulating valve stem, the outer surface at the end of valve rod second can be caused
It is completely superposed with the inwall of restriction portion, the end of valve rod second completely blocks restriction portion, and now the flow in choke valve is zero；Valve rod
The shape at the second end is mutually fitted with restriction portion, is added the contact area of restriction portion and the end of valve rod second, is reduced because of mismachining tolerance
Or corrosion cause gap be present between valve rod the second end outer wall and the inwall of restriction portion and so that segment fluid flow flows through restriction portion
Possibility so that choke valve is more reliable and more stable.
In the above-mentioned technical solutions, it is preferable that moved along the axis of restriction portion at the second end.
In the technical scheme, axis of the end of valve rod second along restriction portion recess is moved linearly, the second end of valve rod
Moving line it is simple, the connected mode of corresponding valve seat and valve rod is simpler so that the overall structure of choke valve is simpler
It is single compact, reduce the fault rate of choke valve.Simultaneously because axis of the end of valve rod second along restriction portion recess is moved linearly, make
The control obtained for the end of valve rod second is simpler, makes choke valve more convenient operation, reduces control difficulty；Second end and restriction portion
The cooperation of inwall is easier, and the regulation to flow is more convenient.
In the above-mentioned technical solutions, it is preferable that valve rod is provided with throttling graduation mark.
In the technical scheme, valve rod is provided with throttling graduation mark, and throttling graduation mark enables to tune of the user for flow
Section can make choke valve easy to use with accurate quantification, also allow for checking the specific situation of throttling, while reduce because of user misoperation
And the possibility that the situation for causing choke valve not to be operated according to given state occurs.
It is pointed out that label creating forms after throttling graduation mark is demarcated when being manufacture using standard choke valve,
To ensure the accuracy of throttling graduation mark.
In the above-mentioned technical solutions, it is preferable that half-duplex channel is outside valve rod.
In the technical scheme, half-duplex channel is located at outside valve rod so that half-duplex channel and one-way plug one will not be by valve rods
Influence so that half-duplex channel and one-way plug one are more stable, and it is close to reduce half-duplex channel when fluid moves in the first direction in choke valve
The possibility that the not tight situation of envelope occurs, while make it that stem structure is simple and reliable, it is easy to manufacture and design.
In the above-mentioned technical solutions, it is preferable that half-duplex channel is arranged in valve rod.
In the technical scheme, half-duplex channel is arranged in valve rod so that valve seat construction is simple, is easy to process, simultaneously
When half-duplex channel breaks down, only valve rod need to be changed, it is not necessary to maintenance replacing is carried out to valve seat again, reduces choke valve dimension
The difficulty repaiied, reduces cost.
In the above-mentioned technical solutions, it is preferable that the internal diameter of half-duplex channel is gradually reduced along first to second mouthful.
In the technical scheme, the internal diameter of half-duplex channel is maximum in first, in second mouthful of minimum, enabling with it is unidirectional
The size range for the one-way plug one that passage coordinates is wider, reduces the requirement on machining accuracy of one-way plug one, reduces adding for one-way plug one
Work difficulty and processing cost.One-way plug one is enabled to after abrasion or corrosion simultaneously, or because generation of expanding with heat and contract with cold is micro
It during deformation, can be still bonded with the inwall of half-duplex channel, improve the durability of half-duplex channel and one-way plug one, increase choke valve
Service life.Meanwhile the one-way plug one in half-duplex channel, it is larger close to the area that first side contacts with fluid,
The area contacted close to second mouthful of side with fluid is smaller, and the pressure that both sides receive is uneven, is now formed in the both sides of one-way plug one
Pressure differential, one-way plug one are promoted the through-flow stream that can reduce half-duplex channel by the pressure that second mouthful of direction is pointed to along half-duplex channel
Amount, or even completely plugged half-duplex channel, further improve the sealing property of half-duplex channel and one-way plug one.
In the above-mentioned technical solutions, it is preferable that the cross-sectional area of one-way plug one is gradually reduced along first to second mouthful.
In the technical scheme, one-way plug one is maximum in the cross-sectional area close to first side, close second mouthful of side
Cross-sectional area is minimum, and now one-way plug one requires more relaxed for the size of half-duplex channel, and the size of half-duplex channel is in certain model
Interior cooperation that can be good with one-way plug one progress is enclosed, reduces the difficulty of processing and processing cost of half-duplex channel.Simultaneously in list
When having abrasion or corrosion to passage, or micro-deformation occurs due to expanding with heat and contract with cold, one-way plug one also can be with the inwall of half-duplex channel
It is brought into close contact, improves the sealing and durability of half-duplex channel and one-way plug one, increases the service life of choke valve.
Additional aspect and advantage of the present utility model will become obvious in following description section, or new by this practicality
The practice of type is recognized.
Brief description of the drawings
Fig. 1 shows the profile according to one embodiment of the present utility model；
Fig. 2 shows the profile according to another embodiment of the present utility model；
Fig. 3 shows the profile according to another embodiment of the present utility model.
Wherein, corresponding relations of the Fig. 1 into Fig. 3 between reference and component names is：
10 choke valves, 102 valve seats, 1022 firsts, 1,024 second mouthfuls, 1026 first passages, 1028 restriction portions, 1,030
One section, 1032 second segments, 1034 half-duplex channels, 104 valve rods, 1042 first ends, 1,044 second ends, 1046 throttling graduation marks, 106
One-way plug one.
Embodiment
In order to which above-mentioned purpose of the present utility model, feature and advantage can be more clearly understood that, below in conjunction with the accompanying drawings and tool
The utility model is further described in detail body embodiment.It should be noted that in the case where not conflicting, this Shen
The feature in embodiment and embodiment please can be mutually combined.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality
New to be different from other modes described here using other to implement, therefore, the scope of protection of the utility model is simultaneously
Do not limited by following public specific embodiment.
Described referring to Fig. 1 to Fig. 3 according to some embodiments of the utility model.
According to the utility model proposes one embodiment choke valve 10, including：Valve seat 102, valve seat 102 include first
1022, second mouthful 1024 of mouth and connection first 1022 and second mouthful 1024 of first passage 1026；First passage 1026 wraps
Include：The restriction portion 1028 of internal diameter gradual change, and the first paragraph 1030 and second segment 1032 connected respectively with the both ends of restriction portion 1028；
Valve rod 104, it is flexibly connected with valve seat 102, valve rod 104 includes：First end 1042 outside valve seat 102, and located at section
The second end 1044 of section 1028 is flowed, the second end 1044 coordinates to expand under the effect of first end 1042 with the inwall of restriction portion 1028
Or reduce the flow of restriction portion 1028；The half-duplex channel 1034 and one-way plug one 106 of mutual cooperation, half-duplex channel 1034 is located at the
In one passage 1026, the both ends of half-duplex channel 1034 are respectively communicated with first paragraph 1030 and second segment 1032 with restriction portion 1028 side by side；
Wherein, half-duplex channel 1034 and one-way plug one 106 seal when fluid moves in the first direction, on fluid edge and first 1022
When being moved in the opposite direction to second mouthful 1024 of first party, half-duplex channel 1034 and one-way plug one 106 separate.
In this embodiment, as depicted in figs. 1 and 2, when carrying out throttle operation, fluid is in the interior edge first of choke valve 10
1022 are moved to second mouthful 1024 of first direction, and the outer surface of one-way plug one 106 and the inwall of half-duplex channel 1034 are brought into close contact,
One-way plug one 106 closes half-duplex channel 1034, and the fluid in choke valve 10 is in the second segment 1032 of first paragraph 1030 and throttling passage
Moved in the passage of composition, fluid is from the end 1044 of valve rod 104 second and the inwall of 102 restriction portion of valve seat 1028 in restriction portion 1028
Flowed through in gap.The regulation of the position of 104 second end of valve rod 1044 is by the first end 1042 of the outer valve rod 104 of regulating valve seat 102
It can be achieved, therefore pass through the position at the end 1044 of 104 first end of valve rod, 1042 regulating valve stem 104 second, you can regulating valve stem 104 the
The distance between two ends 1044 and the inwall of restriction portion 1028, so as to the end 1044 of regulating valve stem 104 second and the inwall of restriction portion 1028
Between fluid passage cross-sectional area, it is final to realize the flow for continuously adjusting fluid in choke valve 10.Simultaneously because restriction portion
1028 internal diameter is gradual change, therefore at the position at the end 1044 of regulating valve stem 104 second, the end 1044 of valve rod 104 second and section
The cross-sectional area flowed between the inwall of section 1028 is also gradual change, therefore can be continuously adjusted with fluid flow.In addition,
Half-duplex channel 1034 is set in one passage 1026 so that when fluid moves in the first direction, half-duplex channel 1034 is because of both sides
Pressure official post one-way plug one 106 is moved to second mouthful of 1024 direction, until one-way plug one 106 is completely plugged by half-duplex channel 1034, from
And make fluid can only be from restriction portion 1028 by merely due to the direction of motion of fluid is to realize the significantly regulation of flow, reducing
The workload of regulation, reduces labor intensity, improves efficiency.
When the opposite direction motion in the first direction of the fluid in choke valve 10, i.e., from second mouthful 1024 to first 1022
Flowing, the outer wall of one-way plug one 106 separate with the inwall of half-duplex channel 1034, and half-duplex channel 1034 connects, now in choke valve 10
Two passes be present, i.e., it is first end 1042, restriction portion 1028 form with second segment 1032 passage and first paragraph 1030, unidirectional
The passage of the end 1044 of passage 1034 and second composition, therefore now choke valve 10 can not be entirely limited fluid in choke valve 10
Flow.
Wherein it is preferred to the size of the smallest cross-section area by limiting half-duplex channel 1034, can be limited to enter indirectly
Row throttling when, i.e., fluid in the first direction opposite direction motion flow velocity.
Wherein it is preferred to valve rod 104 contacts with valve seat 102 for thread seal.It can be increased pair using thread seal contact
The control accuracy of the position of 104 second end of valve rod 1044, and then improve to transversal between the end of valve rod 104 second and restriction portion inwall
The control accuracy of area, the final choke valve 10 that improves are realized to being flowed in choke valve 10 to the control accuracy of flow in choke valve 10
The accurate adjustment of body flow.
Choke valve 10 is simple and reliable for structure in the present embodiment, easy to operation, all parts of choke valve 10 it is easily fabricated and
Use, be that can be achieved to continuously adjust for fluid flow in choke valve 10 by simple operations.
In the above embodiment, it is preferable that the internal diameter of restriction portion 1028, gradually subtracts along first 1022 to second mouthful 1024
It is small.
In this embodiment, the internal diameter of restriction portion 1028 is gradually reduced along first 1022 to second mouthful 1024, that is, is throttled
Cross-sectional area in section 1028 is gradually reduced, therefore when the end 1044 of valve rod 104 second is located at restriction portion 1028 close to first
During 1022 side, the distance between the end 1044 of valve rod 104 second and the inwall of restriction portion 1028 maximum are logical in restriction portion 1028
Road cross-sectional area is maximum, now in choke valve 10 when fluid moves in the first direction, the maximum flow of fluid in choke valve 10.
When the end 1044 of valve rod 104 second is located at restriction portion 1028 close to second mouthful 1024 of side, the end 1044 of valve rod 104 second and section
The distance between the inwall of section 1028 minimum is flowed, now according to the design requirement of choke valve 10, passage is transversal in restriction portion 1028
Area can be zero or a certain positive number.When the end 1044 of valve rod 104 second is located at the centre of restriction portion 1028, restriction portion 1028
The cross-sectional area of middle passage is between a minimum value and a maximum value.Because the internal diameter of restriction portion 1028 is gradual change, therefore choke valve
10 can realize that fluid flow is continuously adjusted between a minimum value and a maximum value.
In the above embodiment, it is preferable that the axis of first 1022 with second mouthful 1024 of axis to be parallel to each other, save
The axis for flowing section 1028 is vertical with the axis of first 1022.
In this embodiment, the axis of restriction portion 1028 and first 1022 and second mouthful 1024 of axis are vertical, from
First 1022 and the fluid of second mouthful of 1024 inflow flow directly into the inwall in first passage 1026, finally in the effect of inwall
The lower change direction of motion enters restriction portion 1028, can reduce fluid for the inwall of restriction portion 1028 and the end of valve rod 104 second
1044 impact, the loss at the inwall of restriction portion 1028 and the end 1044 of valve rod 104 second is reduced, improve restriction portion 1028 and valve rod
The durability at 104 second ends 1044, increase the service life of choke valve 10, also help valve rod 104 and moved along restriction portion axis,
It is easy to the regulation of flow.
In the above embodiment, it is preferable that the shape at the second end 1044 is fitted with the phase of restriction portion 1028, the horizontal stroke at the second end 1044
Area of section is gradually reduced along first 1022 to second mouthful 1024.
In this embodiment, the shape at the end 1044 of valve rod 104 second is fitted with the phase of restriction portion 1028, i.e. the end of valve rod 104 second
1044 outer surface can be completely superposed with the inwall of restriction portion 1028.When fluid moves in the first direction in choke valve 10, and
Choke valve 10 is needed the Flow-rate adjustment of fluid when being zero, now passes through the end of 104 first end of valve rod, 1042 regulating valve stem 104 second
1044 position, the outer surface and the inwall of restriction portion 1028 that can cause the end 1044 of valve rod 104 second are completely superposed, valve rod
104 second ends 1044 completely block restriction portion 1028, and now the flow in choke valve 10 is zero；The end 1044 of valve rod 104 second
Shape fitted with the phase of restriction portion 1028, add the contact area of restriction portion 1028 and the end 1044 of valve rod 104 second, reduce because
Mismachining tolerance or corrosion cause gap between the outer wall of 104 second end of valve rod 1044 and the inwall of restriction portion 1028 be present and cause portion
Shunting body flows through the possibility of restriction portion 1028 so that choke valve 10 is more reliable and more stable.
In the above embodiment, it is preferable that axis of second end 1044 along restriction portion 1028 moves.
In this embodiment, axis of the end 1044 of valve rod 104 second along the recess of restriction portion 1028 is moved linearly, valve rod
The moving line at 104 the second end 1044 is simple, and the connected mode of corresponding valve seat 102 and valve rod 104 is simpler so that section
The overall structure of stream valve 10 is simpler compact, reduces the fault rate of choke valve 10.Simultaneously because the edge of 104 second end of valve rod 1044
The axis of the recess of restriction portion 1028 is moved linearly so that the control for the end 1044 of valve rod 104 second is simpler, envoy
The more convenient operation of valve 10 is flowed, reduces control difficulty, the second end 1044 and the cooperation of the inwall of restriction portion 1028 are easier, to flow
Adjust more convenient.
Axial movement of second end 1044 along restriction portion 1028 simultaneously so that the end 1044 of valve rod 104 second and restriction portion
Cross-sectional area even variation between 1028 inwalls, facilitates technical staff more to be entered to choke valve 10 in production or research
The application of one step.Such as in needing to carry out the continuous system uninterruptedly produced, by artificial continuous twenty four hours to throttling
Valve 10 implement that regulation is difficult to realize, can now make the first end 1042 of valve rod 104 by drive mechanism and motor connection,
By the position for rotating the end 1044 of precision control valve bar 104 second of the first end 1042 of precision control valve bar 104, so as to adjust section
Flow the flow in valve 10.And cause the cross-sectional area even variation between the end 1044 of valve rod 104 second and the inwall of restriction portion 1028,
It is easy to technical staff to establish model in the controls, realizes automatically controlling to the throttle degree of choke valve 10.This embodiment
In pass through controlled motor and rotate flow in i.e. adjustable choke valve 10.
In the above embodiment, it is preferable that valve rod 104 is provided with throttling graduation mark 1046.
In this embodiment, valve rod 104 be provided with throttling graduation mark 1046, throttling graduation mark 1046 enable to user for
The regulation of flow can make choke valve 10 easy to use with accurate quantification, also allow for check throttling specific situation, while reduce because
User misoperation and possibility that the situation that causes choke valve 10 not to be operated according to given state occurs.
It is pointed out that throttling graduation mark 1046 be manufacture when demarcated using standard choke valve after label creating and
Into to ensure the accuracy of throttling graduation mark 1046.
In the above embodiment, it is preferable that half-duplex channel 1034 is outside valve rod 104.
In this embodiment, half-duplex channel 1034 is located at outside valve rod 104 so that half-duplex channel 1034 and one-way plug one 106 are not
It can be influenceed by valve rod 104 so that half-duplex channel 1034 and one-way plug one 106 are more stable, reduce fluid edge in choke valve 10
The possibility that the poorly sealed situation of half-duplex channel 1034 occurs when first direction moves, while make it that valve rod 104 is simple in construction
Reliably, it is easy to manufacture and design.
In the above embodiment, it is preferable that half-duplex channel 1034 is arranged in valve rod 104.
In this embodiment, as shown in figure 3, half-duplex channel 1034 is arranged in valve rod 104 so that the structure of valve seat 102
Simply, it is easy to process, while when half-duplex channel 1034 breaks down, only need to changes valve rod 104, it is not necessary to again to valve seat
102 carry out maintenance replacing, reduce the difficulty of the maintenance of choke valve 10, reduce cost.
In the above embodiment, it is preferable that the internal diameter of half-duplex channel 1034 is gradual along first 1022 to second mouthful 1024
Reduce.
In this embodiment, the internal diameter of half-duplex channel 1034 is maximum in first 1022, minimum at second mouthful 1024 so that
The size range for the one-way plug one 106 that can coordinate with half-duplex channel 1034 is wider, and the machining accuracy for reducing one-way plug one 106 will
Ask, reduce the difficulty of processing and processing cost of one-way plug one 106.One-way plug one 106 is enabled to wear or corroding it simultaneously
It when micro-deformation afterwards, or due to expanding with heat and contract with cold occurs, can still be brought into close contact, improve unidirectional with the inwall of half-duplex channel 1034
The durability of passage 1034 and one-way plug one 106, increase the service life of choke valve 10.Meanwhile in half-duplex channel 1034
One-way plug one 106, it is larger close to the area that the side of first 1022 contacts with fluid, close to second mouthful of 1024 side and fluid
The area of contact is smaller, and pressure that both sides receive is uneven, now forms pressure differential in the both sides of one-way plug one 106, one-way plug one 106 by
The through-flow flow of half-duplex channel 1034 can be reduced by being promoted to the pressure that second mouthful of 1024 direction is pointed to along half-duplex channel 1034, very
To completely plugged half-duplex channel 1034, the further sealing property for improving half-duplex channel 1034 and one-way plug one 106.
In the above embodiment, it is preferable that the cross-sectional area of one-way plug one 106 along first 1022 to second mouthful 1024 by
It is decrescence small.
In this embodiment, one-way plug one 106 is maximum in the cross-sectional area close to the side of first 1022, close to second mouthful
The cross-sectional area of 1024 sides is minimum, and now one-way plug one 106 requires more relaxed for the size of half-duplex channel 1034, unidirectional logical
The size in road 1034 can carry out good cooperation with one-way plug one 106 within the specific limits, reduce half-duplex channel 1034
Difficulty of processing and processing cost.There are abrasion or corrosion in half-duplex channel 1034 simultaneously, or micro-deformation occurs due to expanding with heat and contract with cold
When, one-way plug one 106 can be also brought into close contact with the inwall of half-duplex channel 1034, improve half-duplex channel 1034 and one-way plug one 106
Durability, increase choke valve 10 service life.
Specific embodiment one：
As depicted in figs. 1 and 2, in a specific embodiment of the present utility model, choke valve 10 includes：Valve seat 102, wherein
Valve seat 102 includes：1022, second mouthful 1024 of first and connection first 1022 and second mouthful 1024 of first passage
1026, wherein, first passage 1026 includes：The restriction portion 1028 of internal diameter gradual change, the half-duplex channel 1034 of internal diameter gradual change and with
The first paragraph 1030 that the both ends of restriction portion 1028 and half-duplex channel 1034 respectively connect and second segment 1032, first 1022
For axis with second mouthful 1024 of axis to be parallel to each other, the axis of restriction portion 1028 is vertical with the axis of first 1022.Wherein,
The internal diameter of restriction portion 1028 and half-duplex channel 1034 is gradually reduced along first 1022 to second mouthful 1024.Choke valve 10 also wraps
Include：Valve rod 104, wherein valve rod 104 contact with valve seat 102 for thread seal, and the first end 1042 of valve rod 104 is located at valve seat 102
Outside, the second end 1044 of valve rod 104 is located at restriction portion 1028, and the shape at the second end 1044 is fitted with the phase of restriction portion 1028,
Axial movement of second end 1044 along restriction portion 1028, the throttling graduation mark being additionally provided with valve rod 104 outside valve seat 102
1046, label creating forms after throttling graduation mark 1046 is demarcated when being manufacture using standard choke valve 10.Choke valve 10 is also
Including：One-way plug one 106, in half-duplex channel 1034, and the cross-sectional area of one-way plug one 106 is along first 1022 to second mouthful
1024 are gradually reduced, and half-duplex channel 1034 and one-way plug one 106 seal when fluid moves in the first direction, and fluid is in the first direction
Opposite direction motion when half-duplex channel 1034 and one-way plug one 106 separate.
When fluid moves in the first direction in choke valve 10, i.e., fluid flows to from the first 1022 of choke valve 10
At two mouthful 1024, the area contacted in half-duplex channel 1034 close to the side of first 1022 with fluid is larger, close to second mouthful
The area that 1024 sides contact with fluid is smaller, and the pressure that the both sides of one-way plug one 106 are subject to is uneven, now the two of one-way plug one 106
Side forms pressure differential, and one-way plug one 106 is moved under the promotion of pressure differential to second mouthful 1024, and leans on second in half-duplex channel 1034
1024 one end of mouth are stopped, half-duplex channel 1034 is sealed.Therefore exist in one-way plug one 106 and half-duplex channel 1034 certain
Either there is certain abrasion or corrosion in one-way plug one 106 and half-duplex channel 1034 to scale error or the two sends out because expanding with heat and contract with cold
During raw micro-deformation, the side of one-way plug one 106 and the inwall of half-duplex channel 1034 can also keep closely being bonded, and ensure sealing
Effect so that one-way plug one 106 and the sealing property of half-duplex channel 1034 are more stable.
Now fluid flows into from first 1022 and flows directly into the inwall in first passage 1026, then in the work of inwall
Enter restriction portion 1028 with the lower change direction of motion, subsequently enter second segment 1032 and finally from second mouthful of 1024 outflow choke valve
10.The axis of first 1022 fluid that can reduce vertical with the axis of restriction portion 1028 is for the inwall of restriction portion 1028 and valve
The impact at the end 1044 of bar 104 second, the loss at the inwall of restriction portion 1028 and the end 1044 of valve rod 104 second is reduced, improve restriction portion
1028 and the durability at the end 1044 of valve rod 104 second, increase the service life of choke valve 10, also help valve rod 104 along throttling
Section axis movement, is easy to the regulation of flow.
The first end 1042 of rotation valve rod 104, you can make the end 1044 of valve rod 104 second be moved along the axial direction of restriction portion 1028
It is dynamic, so as to the cross-sectional area at the end 1044 of regulating valve stem 104 second and the gap of restriction portion 1028, further adjust in choke valve 10 and flow
The flow of body.When the end 1044 of valve rod 104 second is located at restriction portion 1028 close to the side of first 1022, now the second end
Gap between 1044 and the inwall of restriction portion 1028 is maximum, and the cross-sectional area of fluid circulation is maximum, the stream of fluid in choke valve 10
Amount is maximum, and the numerical value corresponding to graduation mark 1046 that throttles is maximum；When the second end 1044 of valve rod 104 is located at restriction portion 1028 close to
During two mouthful 1024 one end, the end 1044 of valve rod 104 second and the inwall of restriction portion 1028 are brought into close contact, now the of choke valve 10
No longer connected with second segment 1032 for one section 1030, now the flow of fluid is zero in choke valve 10, and throttle the correspondence of graduation mark 1046
Numerical value be also zero.The second end 1044 is adjusted by the first end 1042 of valve rod 104 to move up in the axle of restriction portion 1028, so as to
Cross-sectional area between the end 1044 of accurate adjustment valve rod 104 second and restriction portion 1028, so as to accurately control the stream of choke valve 10
Amount is between a minimum value and a maximum value.Simultaneously because the internal diameter of restriction portion 1028 is gradual change, thus the end 1044 of valve rod 104 second with
Cross-sectional area between the inwall of restriction portion 1028 can continuously adjust, therefore the flow of choke valve 10 can be adjusted continuously
Section.Throttling graduation mark 1046 is observed in regulation when being adjusted, it is convenient and swift quickly by Flow-rate adjustment to predetermined value.
When fluid opposite direction motion in the first direction in choke valve 10, now the outer wall of one-way plug one 106 with it is unidirectional
The inwall separation of passage 1034, half-duplex channel 1034 connects, and two passes in choke valve 10 now be present, i.e., first end 1042,
Passage and first paragraph 1030 that restriction portion 1028 forms with second segment 1032, the end 1044 of half-duplex channel 1034 and second form
Passage, therefore now choke valve 10 can not be entirely limited the flow of fluid in choke valve 10.
The fluid that is now flowed through from restriction portion 1028 first via second mouthful of 1024 inwall flowed in second segment 1032, with
Change the direction of motion in the presence of inwall afterwards and enter restriction portion 1028, subsequently enter first paragraph 1030 and finally from first
1022 outflow choke valves 10.Second mouthful 1024 of the axis fluid that can reduce vertical with the axis of restriction portion 1028 is for restriction portion
1028 inwalls and the impact at the end 1044 of valve rod 104 second, reduce the damage at the inwall of restriction portion 1028 and the end 1044 of valve rod 104 second
Consumption, the durability at restriction portion 1028 and the end 1044 of valve rod 104 second is improved, increase the service life of choke valve 10, also help
Valve rod 104 moves along restriction portion axis, is easy to the regulation of flow.
Wherein it is preferred to the size of the smallest cross-section area by limiting half-duplex channel, can be limited to without section indirectly
During stream, i.e., fluid opposite direction motion in the first direction when the flow velocity that moves.I.e. when the smallest cross-section area of half-duplex channel 1034
Less than during smallest cross-section area, the upper limit of fluid flow is more than unidirectional logical in choke valve 10 in first paragraph 1030 and second segment 1032
The upper limit of fluid flow in road 1034, thus in choke valve 10 fluid in the first direction opposite direction flowing when, choke valve 10
The flow of fluid in choke valve 10 can be controlled between the flow rate upper limit of half-duplex channel 1034 and the flow rate upper limit of choke valve 10.
Such as when the system where choke valve 10 has certain return flow limitation, by the half-duplex channel of choke valve 10
1034 smallest cross-section area sets the smallest cross-section area less than first paragraph 1030 and second segment 1032, now needs choke valve
The flow of fluid in 10 is equal to the stream of the flow sum, now choke valve 10 of fluid in half-duplex channel 1034 and restriction portion 1028
Maximum is adjustable to amount within the specific limits.
In this specific embodiment, choke valve 10 is simple and reliable for structure, while easily manufactured, and cost is relatively low, can realize
For continuously adjusting on a large scale for fluid flow, application prospect is extensive.
Specific embodiment two：
On the basis of specific embodiment one, as shown in figure 3, half-duplex channel 1034 is arranged in valve rod 104.Half-duplex channel
1034 are arranged in valve rod 104 so that valve seat 102 is simple in construction, is easy to process, while is broken down in half-duplex channel 1034
When, only it need to change valve rod 104, it is not necessary to valve seat 102 is repaired or replaced again, reduces the difficulty of the maintenance of choke valve 10
Degree, reduces cost.
The technical solution of the utility model is described in detail above in association with accompanying drawing, by the technical solution of the utility model,
The large-scale continuous accurate adjustment for fluid flow can be realized, while simple and reliable for structure, it is easily manufactured, cost compared with
It is low.
In the utility model, term " first ", " second ", " the 3rd " are only used for the purpose of description, and it is not intended that
Instruction implies relative importance；Term " multiple " then refers to two or more, is limited unless otherwise clear and definite.Term " peace
The term such as dress ", " connected ", " connection ", " fixation " all should be interpreted broadly, for example, " connection " can be fixedly connected, can also
It is to be detachably connected, or is integrally connected；" connected " can be joined directly together, and can also be indirectly connected by intermediary.It is right
For one of ordinary skill in the art, it can understand that specific in the utility model of above-mentioned term containing as the case may be
Justice.
In description of the present utility model, it is to be understood that term " on ", " under ", "left", "right", "front", "rear" etc. refer to
The orientation or position relationship shown be based on orientation shown in the drawings or position relationship, be for only for ease of description the utility model and
Simplify description, rather than the device or unit of instruction or hint meaning there must be specific direction, with specific azimuth configuration
And operation, it is thus impossible to be interpreted as to limitation of the present utility model.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that combining specific features, structure, material or feature that the embodiment or example describe is contained in of the present utility model at least one
In individual embodiment or example.In this manual, identical embodiment is not necessarily referring to the schematic representation of above-mentioned term
Or example.Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or example
In combine in an appropriate manner.
Preferred embodiment of the present utility model is these are only, is not limited to the utility model, for this area
Technical staff for, the utility model can have various modifications and variations.It is all within the spirit and principles of the utility model,
Any modification, equivalent substitution and improvements made etc., should be included within the scope of protection of the utility model.
Claims (10)
- A kind of 1. choke valve, it is characterised in that including：Valve seat, the valve seat include first, second mouthful and the connection first and described second mouthful of first passage；Institute Stating first passage includes：The restriction portion of internal diameter gradual change, and the first paragraph and second segment connected respectively with the restriction portion both ends；Valve rod, it is flexibly connected with the valve seat, the valve rod includes：First end outside valve seat, and located at restriction portion The second end, second end coordinates to expand or shrink the section under first end effect with the restriction portion inwall Flow the flow of section；The half-duplex channel and one-way plug one of mutual cooperation,The half-duplex channel is in the first passage, and, the half-duplex channel both ends are respectively communicated with the restriction portion side by side The first paragraph and the second segment；Wherein, the half-duplex channel and the one-way plug one are transported in first direction of the fluid along the first to described second mouthful Sealed when dynamic, when the fluid moves along direction opposite to the first direction, the half-duplex channel and the one-way plug one Separation.
- 2. choke valve according to claim 1, it is characterised in that the internal diameter of the restriction portion, along the first to institute Second mouthful is stated to be gradually reduced.
- 3. choke valve according to claim 1, it is characterised in that the axis of the first and described second mouthful of axis To be parallel to each other, the axis of the restriction portion is vertical with the axis of the first.
- 4. choke valve according to claim 2, it is characterised in that the shape at second end is mutually fitted with the restriction portion, The cross-sectional area at second end is gradually reduced along the first to described second mouthful.
- 5. choke valve according to claim 3, it is characterised in that axis of second end along the restriction portion moves.
- 6. choke valve according to claim 1, it is characterised in that the valve rod is provided with throttling graduation mark.
- 7. choke valve according to claim 1, it is characterised in that the half-duplex channel is outside the valve rod.
- 8. choke valve according to claim 1, it is characterised in that the half-duplex channel is arranged in the valve rod.
- 9. the choke valve according to any one of claim 7 to 8, it is characterised in that the internal diameter of the half-duplex channel is along institute First is stated to be gradually reduced to described second mouthful.
- 10. choke valve according to claim 9, it is characterised in that the cross-sectional area of the one-way plug one is along described first Mouth is gradually reduced to described second mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721036673.8U CN207145635U (en) | 2017-08-17 | 2017-08-17 | Choke valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721036673.8U CN207145635U (en) | 2017-08-17 | 2017-08-17 | Choke valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207145635U true CN207145635U (en) | 2018-03-27 |
Family
ID=61665900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721036673.8U Withdrawn - After Issue CN207145635U (en) | 2017-08-17 | 2017-08-17 | Choke valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207145635U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355550A (en) * | 2017-08-17 | 2017-11-17 | 广东美的暖通设备有限公司 | Choke valve |
-
2017
- 2017-08-17 CN CN201721036673.8U patent/CN207145635U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355550A (en) * | 2017-08-17 | 2017-11-17 | 广东美的暖通设备有限公司 | Choke valve |
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