CN206905852U - A kind of type open type fluid switching device in the same direction - Google Patents
A kind of type open type fluid switching device in the same direction Download PDFInfo
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- CN206905852U CN206905852U CN201720645568.8U CN201720645568U CN206905852U CN 206905852 U CN206905852 U CN 206905852U CN 201720645568 U CN201720645568 U CN 201720645568U CN 206905852 U CN206905852 U CN 206905852U
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- column jecket
- rotary shaft
- switching device
- same direction
- housing
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Abstract
The utility model discloses a kind of type open type fluid switching device in the same direction.Stepper motor in the utility model is by shaft coupling with rotating axis connection；Disk is provided with the slit for being capable of printing opacity, and installs on the rotating shaft；First optical-electrical converter and the second optical-electrical converter are arranged on fixed support, are connected with chronoscope frequency device；First flow distribution plate and the second flow distribution plate are symmetrically mounted on rotary shaft both sides, and perpendicular through semicolumn pipe diameter, the side-closed plate of composition semicircle column jecket；Rectification face is half cone-shaped, and upper end is with rotating axis connection.Rotated by suitable control stepper motor, driving rotary shaft simultaneously drives disk, the first shunting plate washer, the second distributing damper, semicircle column jecket and rectification face to rotate, and can preferably realize motion convection body switching in same direction of movement of type fluid switching device in the same direction.The utility model substantially reduces the uncertainty introduced in device switching flow liquid process, improves the accuracy of measurement of liquid flow standard device.
Description
Technical field
It the utility model is related to the type open type fluid switching device in the same direction in a kind of fluid flow device.
Background technology
In current domestic and international measurement technology mechanism, the fluid switching device that liquid flow standard device uses mainly has two
Kind：First, enclosed fluid switching device；Second, type open type fluid switching device not in the same direction.Both fluid switching devices are certain
The transmission of quantity value requirement in current detection, calibrating is met in degree, but with the development of liquid flow mearuement technology, above-mentioned stream
Body switching device has not been well positioned to meet the higher and higher requirement of instrument measurement precision, therefore the problem of expose in use
Also it is more and more.Such as the flow disturbance problem of enclosed fluid switching device, carried out suddenly in enclosed fluid switching device convection body
During switching, rate of flow of fluid and pressure in pipeline will all occur drastically to change, and produce and moved compared with high current bulk wave, and this fluid fluctuation will
It can be propagated along pipeline to entrance, thus cause the disturbance of the fluid of steady flow condition, and then influence the metering of flowmeter
Performance.Because above-mentioned flow disturbance problem is the major defect that enclosed switching device can not overcome, therefore type fluid switching fills
The usage amount put in liquid flow standard device is fewer and fewer, is not produced the type open type stream not in the same direction of disturbance by convection body gradually
Body switching device substitutes.
Fig. 1 gives type open type open type fluid switching device structure composition not in the same direction.In Fig. 1, type open type fluid not in the same direction
Switching device includes commutation nozzle (1), current divider (17), the first switching runner (181), the second switching runner (182), switching dress
Put timing guide rod (19) and optical-electrical converter (20).Wherein, current divider (17) has adjacent the first shunting funnel (171) and second
Funnel (172) is shunted, the first shunting funnel (171) and the second lower end for shunting funnel (172) are corresponding with the first guide wire respectively
And the second guide wire (1722) (1711)；In addition, the lower end of the first guide wire (1711) and the second guide wire (1722) is right respectively
It is placed in answering in the first commutation runner (181) and the second commutation runner (182).Fluid switching device timing guide rod (19) and shunting
Device (17) is fixedly connected and is engaged generation timing control signals with optical-electrical converter (20).The work of the type fluid switching device
Principle and corresponding fluid switching discharge model can be represented by Fig. 2.The type fluid switching device is worked as seen from Figure 2
Journey can be divided into following several stages：
t 0—t 10Stage, at this stage fluid switching device start by fluid from bypass pipe to work measuring instrument switch, nozzle
The fluid of ejection is gradually switched inflow work measuring instrument by bypass pipe, now timer not timing, and the process flows into work measuring instrument
The cumulant of fluid represented with A.
t 10—t 20Stage, at this stage fluid switching device fluid is gradually switched into work measuring instrument completely, and
And timer start byt 10Moment timing, the fluid cumulative amount that work measuring instrument is flowed into during being somebody's turn to do are represented with B.
t 20—t 30The finishing switching in stage, at this stage fluid switching device convection body, the fluid that nozzle sprays are complete
Into work measuring instrument, timer continuest 10—t 20Stage continues continuous timing, and the process flows into the fluid of work measuring instrument
Cumulant is represented with G.
t 30—t 40Stage, at this stage fluid switching device start to be switched out from work measuring instrument to bypass pipe, nozzle
The fluid of ejection gradually flows into bypass pipe by work measuring instrument, and timer continuest 20—t 30Stage continues continuous timing, should
The fluid cumulative amount that process flows into work measuring instrument is represented with E.
t 40—t 50Stage, at this stage fluid switching device fluid is gradually switched into bypass by work measuring instrument completely
Pipe, timer is at the momentt 40Stop timing, the fluid cumulative amount that the process flows into work measuring instrument is represented with F.
Known according to above-mentioned analysis, the whole handoff procedure of fluid switching device convection body can be divided into switch into/switch
Go out two processes, the two fluid handoff procedures of the type fluid switching device are process in opposite direction, therefore the type fluid
In the whole fluid handoff procedure of switching device, switch into/to switch out be not in the same direction.According to the work of the type fluid switching device
Make beginning and the finish time of process and timing, the type fluid switching device can be obtained and flowed during switching/switching out
The fluid cumulative amount entered in work measuring instrument isQ=A+B+G+E+F, timing time section aret 10 — t 40, it is hereby achieved that the type stream
Average discharge in body switching device fluid switching cycle isq=Q/( t 40 - t 10).Due to the type fluid switching device spray nozzle part
Point rate of flow of fluid skewness and the type fluid switching device convection body switch when switch into/switch out not in the same direction, cause
Above-mentioned flow is not the actual flow in the type fluid switching device fluid switching cycle interior conduit, the actual flow in pipeline
Should be：q 1=(B+C+G+D+E)/(t 4 -t 1).Causeq=q 1, it is necessary to have：A+B+G+E+F=B+C+G+D+E, i.e. A+F=C+D.
Meet A+F=C+D, it is necessary to the pulse-triggered position of timer is adjusted according to rate of flow of fluid distribution.
In fact, during flow difference, the rate of flow of fluid distribution that fluid switching device nozzle sprays is also different, if by pulse
Trigger position is adjusted according to the rate of flow of fluid distribution under a certain flow and is placed in a fixed position, then is flowed down in the flow
Uncertainty will be smaller caused by body switching device, and under other flows, velocity flow profile and pulse-triggered position cause to flow
Uncertainty will be greatly increased caused by body switching device, and the mode of pulse-triggered position is constantly adjusted again according to different flow
Without feasibility, therefore this type fluid switching device is difficult to realize A+F=C+D, so the type fluid switching device convection current
The average discharge obtained in a cycle that body switches/switched out when switching has larger error with actual flow, and this just gives
Liquid flow standard device brings larger uncertainty.Want preferably solve type open type fluid switching device convection current not in the same direction
The larger problem of uncertainty do not brought in the same direction by " switch into/switch out " when body switches, more feasible method are just so that
" switch into/switch out " when open type fluid switching device convection body switches is equidirectional, and the utility model is exactly to be asked to solve this
Topic and the equidirectional fluid switching device of one kind " switch into/switch out " proposed.
The content of the invention
The purpose of this utility model is to provide the type open type fluid switching device in the same direction in a kind of liquid flow standard device.
To achieve the above object, technical solution adopted in the utility model is：
The utility model mainly includes nozzle, stepper motor, shaft coupling, rotary shaft, disk, transmissive slit, the first photoelectricity
Converter, the second optical-electrical converter, chronoscope frequency device, the first distributing damper, the second distributing damper, semicircle column jecket, rectification face,
Bypass pipe, housing, work measuring instrument.The stepper motor is connected by shaft coupling with rotary shaft；Disk, which is provided with, is capable of printing opacity
Slit, it is fixedly mounted on the rotating shaft；First optical-electrical converter and the second optical-electrical converter respectively symmetrically are arranged on any solid
On fixed support, it is connected by shielding line with chronoscope frequency device；First distributing damper and the second distributing damper are symmetrically solid
Dingan County is mounted in rotary shaft both sides, and perpendicular through semicolumn pipe diameter, the side-closed of semicircle column jecket is formed together with rotary shaft
Plate；Semicircle column jecket is the half of cylinder, passes perpendicularly through housing bottom, feed liquor part wherein more than housing bottom and following
Dispensing parts are semicircle column jecket, are wholecircle column jecket with housing bottom contact portion；Semicircle column jecket dispensing parts bottom goes out
Liquid mouth is relative with work measuring instrument inlet；The contact portion of wholecircle column jecket and housing bottom is sealed using encapsulant, close
When envelope requirement should reach half (complete) cylindrical tube with housing bottom progress relative rotary motion, fluid will not be by sealing seepage；It is whole
Stream interface is half cone-shaped, and gap is left between its bottom and housing bottom, and axis is fixedly connected with the rotating shaft；Semicircle column jecket with it is whole
Stream interface is symmetrically fixed on rotary shaft both sides；Housing is located above work measuring instrument, is fixed in any bracket, bottom is provided with out liquid
Mouth is connected with bypass pipe.
Compared with prior art, the utility model has the advantages of simple in construction, commutation robustness is good, not only solves stream
Body switching device the problem of convection body switches in the same direction, it is often more important that the same direction fluid realized by the device is cut
Change, substantially reduce fluid switching caused by uncertainty, improve the accuracy of measurement of liquid flow standard device.
Brief description of the drawings
Fig. 1 is the structure chart of type open type fluid switching device not in the same direction；
Fig. 2 is the fluid switching discharge model figure of type open type fluid switching device not in the same direction；
Fig. 3 is the structure chart of the utility model type open type fluid switching device in the same direction；
Fig. 4 is the fluid switching discharge model figure of the utility model type open type fluid switching device in the same direction；
Fig. 5 ~ Fig. 7 is the utility model type open type fluid switching device fluid handoff procedure figure in the same direction.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The utility model has abandoned the design structure of traditional type open type fluid switching device not in the same direction completely, employs one
The brand-new design structure of kind.As shown in figure 3, mainly include nozzle 1, stepper motor 2, shaft coupling 3, rotary shaft 4, disk 5, printing opacity
Slit 6, the first optical-electrical converter 7, the second optical-electrical converter 8, chronoscope frequency device 9, the first distributing damper 10, the second shunting gear
Plate 11, semicircle column jecket 12, rectification face 13, bypass pipe 14, housing 15, work measuring instrument 16.
During using fluid switching device of the present utility model, stepper motor 2 can be connected by shaft coupling 3 with rotary shaft 4
Connect；The disk 5 for the slit 6 for being capable of printing opacity is provided with, is fixedly mounted in rotary shaft 4；First optical-electrical converter 7 and the second photoelectricity turn
Parallel operation 8 respectively symmetrically on the support of any fixation, is connected by shielding line with timer 9；First distributing damper
10 and second distributing damper 11 be symmetrically fixedly mounted on the both sides of rotary shaft 4, and perpendicular through the diameter of semicircle column jecket 12, with rotation
Axle 4 forms the side-closed plate of semicircle column jecket 12 together；Semicircle column jecket 12 is the half of cylinder, passes perpendicularly through the bottom of housing 15
Portion, wherein feed liquor the part more than bottom of housing 15 and following dispensing parts are semicircle column jecket 12, are connect with the bottom of housing 15
Contact portion is divided into wholecircle column jecket；The liquid outlet of the dispensing parts bottom of semicircle column jecket 12 is relative with the inlet of work measuring instrument 16；Wholecircle
Column jecket and the contact portion of the bottom of housing 15 are sealed using encapsulant, seal request should reach half (complete) cylindrical tube 12 and
When the bottom of housing 15 carries out relative rotary motion, fluid will not be by sealing seepage；Rectification face 13 is half cone-shaped, its bottom
Gap is left between the bottom of housing 15, axis is fixedly connected with rotary shaft 4；Semicircle column jecket 12 is symmetrically fixed on rectification face 13
The both sides of rotary shaft 4；Housing 15 is located above work measuring instrument, is fixed in any bracket, bottom is provided with liquid outlet and bypass pipe 14
It is connected.
Fluid switching device specific work process of the present utility model is as follows：
1）As shown in figure 5, drive rotary shaft 4 to rotate clockwise by shaft coupling 3 using stepper motor 2, the up time of rotary shaft 4
Pin, which rotates, drives disk 5, the first distributing damper 10, the second distributing damper 11, semicircle column jecket 12, rectification face 13 to rotate clockwise directly
It is located at the side of bypass pipe 14 to rectification face 13, semicircle column jecket 12 is located at the opposite side of bypass pipe 14, and the position is defined as type in the same direction and opened
0 ° of position of forward direction of formula fluid switching device；In the opening position, the rectified face 13 of fluid that nozzle 1 sprays is pooled to shell after shunting
The bottom of body 15, and the liquid outlet through the bottom of housing 15 enters bypass pipe, flows into circulation liquid pool.
2）As shown in fig. 6, driving rotary shaft 4 at the uniform velocity continuously to rotate clockwise by shaft coupling 3 using stepper motor 2, turn
Moving axis 4, which at the uniform velocity continuously rotates clockwise, drives disk 5, the first distributing damper 10, the second distributing damper 11, semicircle column jecket 12, whole
Stream interface 13 is at the uniform velocity continuously turned clockwise by positive 0 ° of position, until rotational angle stops when reaching positive 180 °, the position is determined
Justice is 180 ° of positions of forward direction of type open type fluid switching device in the same direction.In the opening position, semicircle column jecket 12 is located at bypass pipe 14 1
The lower section of side nozzle 1, rectification face 13 are located at the opposite side of bypass pipe 14, and the fluid that nozzle 1 sprays flows into work by semicircle column jecket 12
Make measuring device 16.When the at the uniform velocity continuous dextrorotation gyration of disk 5 reaches positive 90 °, the optical-electrical converter of transmissive slit 6 and first
7 coordinate generation photoimpact, are sent into chronoscope frequency device 9 and start timing.
3）As shown in fig. 7, driving rotary shaft 4 at the uniform velocity continuously to rotate clockwise by shaft coupling 3 using stepper motor 2, turn
Moving axis 4, which at the uniform velocity continuously rotates clockwise, drives disk 5, the first distributing damper 10, the second distributing damper 11, semicircle column jecket 12, whole
Stream interface 13 is at the uniform velocity continuously turned clockwise by positive 180 ° of positions, until rotational angle stops when reaching positive 360 °, the position
Just overlapped with positive 0 ° of position, this position is still defined as positive 0 ° of position.In the opening position, rectification face 13 is positioned at bypass
The side of pipe 14, semicircle column jecket 12 are located at the opposite side of bypass pipe 14, and the rectified face 13 of fluid that nozzle 1 sprays is pooled to shell after shunting
The bottom of body 15, and the liquid outlet through the bottom of housing 15 enters bypass pipe, flows into circulation liquid pool.It is at the uniform velocity continuous clockwise in disk 5
When the anglec of rotation reaches positive 270 °, the optical-electrical converter 8 of transmissive slit 6 and second, which coordinates, produces photoimpact, is sent into chronoscope
Frequency device 9 stops timing；Now, complete one of type open type fluid switching device in the same direction switch into/switch out process；Control step
Stepper motor drives rotary shaft at the uniform velocity continuously to rotate counterclockwise by shaft coupling, can equally complete another fluid handoff procedure.
The said structure of the utility model type open type fluid switching device in the same direction and its corresponding course of work realize together
Timing to type open type fluid switching device starts（The step 2 of the corresponding above-mentioned course of work）Terminate with timing（Corresponding above-mentioned work
Make the step 3 of process）Completed at same direction same position, i.e., type open type fluid switching device in the same direction is realized in the same direction
" switch into/switch out " of convection body.Fluid switching discharge model shown in Fig. 4 is type open type in the same direction of the present utility model
Discharge model corresponding to fluid switching device switching flow liquid process.By Fig. 4 it is recognised that because the discharge model is fluid switching
Fluid model corresponding to the fluid " switch/switch out " that device is realized in the same direction, it is achieved that A=D, C=F, A+ F=
C+D, overcome the open type fluid switching device not in the same direction A+F that " switch into/switch out " fluid is difficult in different directions
=C+D problems, therefore average discharge and actual flow phase in the timing time section of the final a cycle for realizing fluid switching
Deng：q 1=(B+C+G+D+E)/(t 4-t 1)=(A+B+G+E+F)/(t 4-t 1)=q。
Claims (1)
1. a kind of type open type fluid switching device, including nozzle (1) in the same direction, stepper motor (2), shaft coupling (3), rotary shaft (4),
Disk (5), transmissive slit (6), the first optical-electrical converter (7), the second optical-electrical converter (8), chronoscope frequency device (9), first
Distributing damper (10), the second distributing damper (11), semicircle column jecket (12), rectification face (13), bypass pipe (14), housing (15), work
Make measuring device (16), it is characterised in that：
The stepper motor (2) is connected by shaft coupling (3) with rotary shaft (4)；Disk (5) is provided with the slit for being capable of printing opacity
(6), it is fixedly mounted in rotary shaft (4)；First optical-electrical converter (7) and the second optical-electrical converter (8) respectively symmetrically are installed
On the support of any fixation, it is connected by shielding line with chronoscope frequency device (9)；First distributing damper (10) and second point
Stream baffle plate (11) is symmetrically fixedly mounted on rotary shaft (4) both sides, and perpendicular through semicircle column jecket (12) diameter, with rotary shaft
(4) the side-closed plate of semicircle column jecket (12) is formed together；Semicircle column jecket (12) is the half of cylinder, passes perpendicularly through housing
(15) more than bottom, wherein housing (15) bottom water inlet portion and following water part are semicircle column jecket (12), with shell
Body (15) bottom contact portion is wholecircle column jecket；The liquid outlet of semicircle column jecket (12) bottom and work measuring instrument (16) inlet phase
It is right；Wholecircle column jecket and the contact portion of housing (15) bottom are sealed using encapsulant, and seal request should reach semicolumn
When managing (12) or wholecircle column jecket with housing (15) bottom progress relative rotary motion, fluid will not be by sealing seepage；Rectification face
(13) it is half cone-shaped, gap is left between its bottom and housing (15) bottom, axis is fixedly connected with rotary shaft (4)；Semicircle
Column jecket (12) is symmetrically fixed on rotary shaft (4) both sides with rectification face (13)；Housing (15) is located above work measuring instrument, is fixed on
In any bracket, bottom is provided with liquid outlet and is connected with bypass pipe (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720645568.8U CN206905852U (en) | 2017-06-06 | 2017-06-06 | A kind of type open type fluid switching device in the same direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720645568.8U CN206905852U (en) | 2017-06-06 | 2017-06-06 | A kind of type open type fluid switching device in the same direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206905852U true CN206905852U (en) | 2018-01-19 |
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ID=61287016
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720645568.8U Expired - Fee Related CN206905852U (en) | 2017-06-06 | 2017-06-06 | A kind of type open type fluid switching device in the same direction |
Country Status (1)
| Country | Link |
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| CN (1) | CN206905852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131930A (en) * | 2017-06-06 | 2017-09-05 | 浙江省计量科学研究院 | A kind of type open type fluid switching device in the same direction and the method for fluid switching and timing |
-
2017
- 2017-06-06 CN CN201720645568.8U patent/CN206905852U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131930A (en) * | 2017-06-06 | 2017-09-05 | 浙江省计量科学研究院 | A kind of type open type fluid switching device in the same direction and the method for fluid switching and timing |
| CN107131930B (en) * | 2017-06-06 | 2019-11-22 | 浙江省计量科学研究院 | A kind of type open type fluid switching device in the same direction and the method for fluid switching and timing |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 Termination date: 20180606 |