A kind of constant flow clearance type inlet and outlet
The application is application No. is 2016111229390, and the applying date is on December 08th, 2016, and invention and created name is
A kind of divisional application of the patent of " constant flow clearance type inlet and outlet for eliminating viscosity influence ".
Technical field
The invention belongs to pipeline valve technical field more particularly to a kind of constant flow clearance type disengaging for eliminating viscosity influence
Mouthful.
Background technique
It is many kinds of at present for pipeline valve channel, but for the valve passage of constant flow, and to passing through
The exigent valve passage of flow accuracy, the variation of ambient temperature used influences whether the viscosity of flow media, for big
Small constant gap or aperture, in different temperature, because the viscosity with temperature of flow media changes, temperature gets over low viscosity
It is bigger, so that flow media is changed by the flow and speed in gap;So that the stream of the flow media by valve passage
Amount changes.So preferable prospect of the application will be had by designing a kind of valve passage of weakening temperature influence.
The constant flow clearance type inlet and outlet that the present invention designs a kind of elimination viscosity influence solve the problems, such as above.
Summary of the invention
To solve drawbacks described above in the prior art, the present invention disclose a kind of constant flow clearance type for eliminating viscosity influence into
Outlet, it adopts the following technical solutions to realize.
A kind of constant flow clearance type inlet and outlet for eliminating viscosity influence, it is characterised in that: it includes gap, cock body, adjusting
Wall, adjusts channel, sliding cavity, spring cavity, spring bearing piece at secondary spring, and wherein cock body is cylinder, has section among cock body
Centre for the gap of rectangle, gap side has sliding cavity, and the upper and lower sides of sliding cavity are respectively provided with spring cavity, sliding cavity side
Top have adjust channel;Adjusting wall both ends has spring bearing piece, adjusts and is mounted in sliding cavity among wall, adjusts wall both ends
Spring bearing piece be separately mounted to up and down in two spring cavitys, adjust a lower height of one end of wall and be in contact with channel is adjusted, tune
Section higher-height one end of wall is contacted with gap, and two secondary springs are separately mounted in two spring cavitys, and secondary spring one
End is connect with spring cavity side wall, and the other end is connect with spring bearing piece top.
As the further improvement of this technology, above-mentioned secondary spring is compressed spring.
As the further improvement of this technology, above-mentioned adjusting wall it is higher with lower both ends height ratio between 1 to 0.6.
As the further improvement of this technology, baffle is mounted on the above-mentioned spring cavity being distributed up and down.
As the further improvement of this technology, the area ratio of the cross section in above-mentioned adjusting channel cross sectional area and gap is small
In 0.05.
Relative to traditional pipeline valve technology, cock body is cylindrical body in the present invention, and centre has gap, when cock body two sides
Pressure difference when, the flow media of the larger side of cock body pressure is flowed into the other side by gap under differential pressure action.For
The constant gap of size, at different temperature in use, temperature gets over low viscosity because the viscosity with temperature of flow media changes
It is bigger, so that flow media is changed by the flow and speed in gap;In order to avoid being affected by temperature, devising can
With the adjusting wall of sliding, the pressure for adjusting the higher-height one end of wall by flow media in gap is acted on, and a lower height of one
End is regulated the pressure effect of flow media in channel;Because adjusting, channel is smaller, adjusts the flow media flowing in channel
Pressure loss can occur because of viscosity and the frictional force of wall surface in the process, and the channel in gap is relatively large, the pressure loss is smaller,
This just cause adjust wall two sides pressure it is different, in addition adjust wall two sides height it is different so that adjust wall height compared with
Pressure suffered by high side is greater than the pressure for adjusting a lower height of side of wall;In the spring bearing piece for adjusting wall upper and lower ends
On the compressed secondary spring being connected with spring cavity wall surface is installed.When flow media is flowed through from cock body, bullet is assisted
The pressure that the sum of the elastic force of spring and the pressure for adjusting channel are generated with gap reaches balance, and adjusting wall is made to be in a stable shape
State;When the temperature is changed, as temperature declines, the viscosity of flow media increases, if the cross section size in gap is constant, flows through seam
The flow and speed of the flow media of gap will all reduce;But for the design, temperature is reduced, and after viscosity increase, is adjusted logical
The crushing in Pressure Loss Ratio gap passage in road is increased more, and secondary spring needs are further compressed so that adjusting wall stress
Reach a new balance, so adjusting wall will be mobile to channel direction is adjusted, and gap will will increase, and increased gap will
The viscosity that flow media can be made up increases and the reduction of bring flow and speed, weakens the influence of temperature.Bullet is assisted in cock body
On the one hand spring adjusts the purpose for being moved to dynamic balance of wall according to the crushing of flow media, when on the one hand passing through adjusting force
The change in displacement of generation adjusts gap size, and gap size variation is made to make up the flow that flow media viscosity change generates
Variation, gap and adjusts the cross-sectional area in channel and is required to than the height of two sidewalls in, adjusting channel by accurately calculating,
Theoretical calculation shows the area ratio for adjusting the cross section in channel cross sectional area and gap less than 0.05, adjust wall it is higher with it is lower
Both ends height ratio between 1 to 0.6, meet both adjusting after, can make adjust wall realize make up temperature influence effect,
And the coefficient of elasticity of secondary spring solves according to the following formula.
Wherein K is the coefficient of elasticity of secondary spring, and b is the length in gap, and μ is the viscosity of flow media, and P damage is logical to adjust
The average crushing along journey in road, subscript 1,2 respectively indicate two states of maximum temperature and minimum temperature using temperature.
The present invention has preferable using effect in terms of weakening temperature influence.
Detailed description of the invention
Fig. 1 is global facility internal structure distribution schematic diagram.
Fig. 2 is global facility internal structure side view.
Fig. 3 is to adjust wall scheme of installation.
Fig. 4 is cock body structural schematic diagram.
Fig. 5 is to adjust wall construction schematic diagram.
Figure label title: 20, gap, 21, cock body, 22, baffle, 23, adjust wall, 24, secondary spring, 25, adjust it is logical
Road, 26, sliding cavity, 27, spring cavity, 28, spring bearing piece.
Specific embodiment
As shown in Figure 1, 2, it includes gap, cock body, adjusts wall, secondary spring, adjusts channel, sliding cavity, spring cavity, bullet
Spring bearing piece, wherein cock body is cylinder, and having section among cock body is the gap of rectangle, as shown in figure 4, the centre of gap side
With sliding cavity, the upper and lower sides of sliding cavity are respectively provided with spring cavity, and the top of sliding cavity side, which has, adjusts channel;Such as Fig. 5 institute
Show, adjusting wall both ends has spring bearing piece, adjusts and is mounted in sliding cavity among wall, and the spring bearing piece for adjusting wall both ends is pacified respectively
It in upper and lower two spring cavitys, adjusts a lower height of one end of wall and is in contact with channel is adjusted, adjust wall higher-height one
End is contacted with gap, as shown in figure 3, two secondary springs are separately mounted in two spring cavitys, and secondary spring one end and bullet
The connection of spring chamber side wall, the other end are connect with spring bearing piece top.
Above-mentioned secondary spring is compressed spring.
Above-mentioned adjusting wall it is higher with lower both ends height ratio between 1 to 0.6.
As shown in figure 3, being mounted on baffle on the above-mentioned spring cavity being distributed up and down.
The area ratio of the cross section in above-mentioned adjusting channel cross sectional area and gap is less than 0.05.
In conclusion cock body is cylindrical body in the present invention, centre has gap, when the pressure difference of cock body two sides, plug
The flow media of the larger side of body pressure is flowed into the other side by gap under differential pressure action.The gap constant for size,
At different temperature in use, temperature more low viscosity is bigger because the viscosity with temperature of flow media changes, so that flowing is situated between
Matter is changed by the flow and speed in gap;In order to avoid being affected by temperature, the adjusting wall that can be slided is devised,
Pressure effect of the higher-height one end of wall by flow media in gap is adjusted, a lower height of one end is regulated in channel
The pressure of flow media acts on;Because adjusting, channel is smaller, and adjusting can be because of viscosity in the flow media flow process in channel
Pressure loss occurs with the frictional force of wall surface, and the channel in gap is relatively large, the pressure loss is smaller, this just causes adjusting wall
The pressure of two sides is different, in addition the height for adjusting wall two sides is different, so that adjusting suffered by the higher-height side of wall
Pressure is greater than the pressure for adjusting a lower height of side of wall;It is equipped with and spring cavity in the spring bearing piece for adjusting wall upper and lower ends
The compressed secondary spring that wall surface is connected.When flow media is flowed through from cock body, as shown in Fig. 2, the bullet of secondary spring
The pressure that the sum of power and the pressure for adjusting channel are generated with gap reaches balance, and adjusting wall is made to be in a stable state;When
When temperature change, if temperature declines, the viscosity of flow media increases, if the cross section size in gap is constant, flows through gap
The flow and speed of flow media will all reduce;But for the design, temperature is reduced, and after viscosity increase, is adjusted in channel
Pressure Loss Ratio gap passage in crushing it is increased more, secondary spring needs are further compressed and are reached so that adjusting wall stress
One new balance, so adjusting wall will be mobile to channel direction is adjusted, and gap will will increase, and increased gap will be more
The viscosity for mending flow media increases and the reduction of bring flow and speed, weakens the influence of temperature.Secondary spring one in cock body
Aspect adjusts the purpose for being moved to dynamic balance of wall according to the crushing of flow media, generates when on the one hand passing through adjusting force
Change in displacement adjust gap size, and make gap size variation make up flow media viscosity change generation flow become
Change, gap and adjusts the cross-sectional area in channel and be required to than the height of the, two sidewalls that adjust channel by accurately calculating, reason
By calculation shows that the area ratio for adjusting the cross section in channel cross sectional area and gap less than 0.05, adjust wall it is higher with it is lower
Both ends height ratio is between 1 to 0.6, after meeting both adjustings, can make to adjust the effect that wall realization makes up temperature influence, and
The coefficient of elasticity of secondary spring solves according to the following formula.
Wherein K is the coefficient of elasticity of secondary spring, and b is the length in gap, and μ is the viscosity of flow media, and P damage is logical to adjust
The average crushing along journey in road, subscript 1,2 respectively indicate two states of maximum temperature and minimum temperature using temperature.
The present invention has preferable using effect in terms of weakening temperature influence.