CN208417730U - Differential type nozzle flapper pressure regulating device - Google Patents
Differential type nozzle flapper pressure regulating device Download PDFInfo
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- CN208417730U CN208417730U CN201821214621.XU CN201821214621U CN208417730U CN 208417730 U CN208417730 U CN 208417730U CN 201821214621 U CN201821214621 U CN 201821214621U CN 208417730 U CN208417730 U CN 208417730U
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Abstract
The utility model relates to differential type nozzle flapper pressure regulating device, which includes baffle plate assembly, shell and two nozzles；The baffle of two pieces of linkages is installed, two baffles generate a pair of of difference displacement signal under the effect of same external drive source on baffle plate assembly；Baffle plate assembly fixes a nozzle carrier two baffle corresponding positions are each, nozzle carrier is respectively threadedly coupled a thread bush, thread bush respectively connects a nozzle, so that the outlet side of nozzle is narrowly focused towards baffle, it will be in guide groove of the holding screw by nozzle carrier insertion nozzle, the inlet end of nozzle is docked on shell, and bleed pressure input port is opened up on shell, and external air source pressure inputs two nozzles by bleed pressure input port；It states and is also provided with two on shell for measuring the pressure port of nozzle air pressure, pressure port is connected one by one with nozzle, and accurate, convenient, visual, simple locking is realized in the micro adjustment of this programme nozzle-flapper gap, and realizing reduces energy consumption, reduces driving volume source.
Description
Technical field
The utility model belongs to regulating valve field, one of the core component of intellectual valve positioner, to pneumatic amplification
Device provides high-precision control pressure, and in particular to a kind of differential type nozzle-baffle pressure regulating device.
Background technique
Such as Fig. 1, valve positioner is the main accessories of regulating valve, it is with the standard signal that system exports 4~20mA
The operating power source of work order and locator, after adjusting valve events, displacement of valve rod amount is by the displacement sensor in feedback component
It is converted to valve position signal and feeds back to system by being converted to 4~20mA standard valve position signal after PCB cell processing, system is according to valve position
Signal exports the standard signal of 4~20mA, then by exporting control electric current Im(exciting current after PCB cell processing) make baffle with inclined
Turn center and deflect that nozzle-flapper gap X is made to change, Fig. 4 is nozzle-baffle characteristics curve, as exciting current Im
Increase gap X to increase to reduce nozzle back pressure Pn, exciting current Im reduces gap X and reduces to increase nozzle back pressure Pn
Greatly.
By Fig. 3, the change of Pn causes pneumatic amplifier diaphragm seat to generate axial movement to realize to valve positioner
The control of gas source output, is also achieved that the control to valve position.
Such as Fig. 2, Fig. 3, nozzle-flapper gap stirs spray with driver plate in 0.02~0.10mm when locator works normally
The mode of the screw mechanism of mouth come obtain reasonable nozzle-flapper gap X difficulty be it is high, be difficult to realize high-volume automate
Production, and debugging process, using Static output performance as foundation, the quality problems of each associated component are covered with static properties qualification,
This is unfavorable to the raising of locator performance while increasing debugging cost of labor.
Such as Fig. 1, valve positioner does not have other power inputs only using the standard signal of 4~20mA of system output as energy
Source is closed to save the energy in the iron nickel that the selection of electrical component, magnetic circuit material is expensive low-power consumption element and high magnetic efficiency
Gold, cost price are high.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of differential type nozzle flapper pressure regulator
Structure, realizes nozzle-flapper gap differential variation, and accurate, convenient, visual, simple lock is realized in the micro adjustment of nozzle-flapper gap
Only, realizing reduces energy consumption, reduces driving volume source.
The purpose of this utility model is achieved through the following technical solutions:
Differential type nozzle flapper pressure regulating device, the mechanism include baffle plate assembly, shell and two nozzles；
The baffle of two pieces of linkages is installed, two baffles under same external drive source (magnetic field) effect on the baffle plate assembly
Generate a pair of of difference displacement signal；
The baffle plate assembly fixes a nozzle carrier two baffle corresponding positions are each, and the nozzle carrier is respectively threadedly coupled one
Thread bush, the thread bush respectively connects a nozzle, so that the outlet side of nozzle is narrowly focused towards baffle, by a holding screw
In guide groove by nozzle carrier insertion nozzle；
The inlet end of the nozzle is docked on shell, and bleed pressure input port, external air source pressure are opened up on the shell
Power inputs two nozzles by bleed pressure input port；
Two are also provided on the shell for measuring the pressure port of nozzle air pressure, the pressure port is led one by one with nozzle
Logical, pressure port installs pressure transmitter when pressure regulation, and pressure regulation terminates to block pressure port；
Before pressure regulation, manually adjusts thread bush and make the gap between two nozzles and baffle equal.
Further, the shell interposed membrane seat fixes diaphragm on the diaphragm seat, which is divided into left and right for shell
Symmetrical two control chambers, two control chambers pass through constant throttling orifice respectively and are connected with bleed pressure input port, two nozzle inlet ends with
Two control chambers dock conducting one by one.
Further, the constant throttling orifice is respectively configured with a throttling bolt.
Further, one section of filter chamber is formed between the constant throttling orifice and bleed pressure input port, is filled out in the filter chamber
Filled with filter packing.
Further, one section of left hand thread and right-handed thread built in the thread bush, left hand thread and nozzle carrier screw thread connect
It connects, right-handed thread is connect with nozzle threads, and left hand thread aperture excircle part is evenly distributed with visual groove, and the nozzle carrier outer circle is visual
Carve a reference line in position.
Further, it is ipsilateral to be located at baffle plate assembly for two baffle, and two baffles central point of having mercy on rotates to form a pair of of differential bit
Shifting signal.
Further, two baffle is located at baffle plate assembly two sides, synchronizes it by connecting rod connection between two baffles and transports
It is dynamic to form a pair of of difference displacement signal.
The beneficial effects of the utility model are: using difference nozzle-baffle mechanism such as Fig. 8, (being encouraged in external drive source
Magnetoelectricity stream Im) it acts on lower two baffles and generates a pair of synchronous, equivalent, reversed difference displacement signal △ X, then two flapper gap X
Opposite variation is 2 ︱ △ X ︱, and the variation of gap X caused by the identical exciting current Im of original structure shown in Fig. 1 is △ X, so
The variation of the utility model intermediate gap improves i.e. twice sensitivity to exciting current Im response and improves twice, is maintaining sensitivity
Exciting current Im can significantly be reduced under permanence condition, reduce the material that electronic component low-power consumption requires, reduces magnetic circuit element
It is required that declining cost.Such as Fig. 5, Fig. 6, adds the differential microfeed structure of screw thread and Fig. 5 adds the pressure port of nozzle back pressure, out
Pressure transmitter is loaded at pressure port when factory's detection, debugging can be realized by the differential microfeed of computer system combination screw thread
Mechanism is debugged, and is determined qualified or not and is stored print quality report, can reduce a large amount of detection, debugging cost in this way.
Detailed description of the invention
Fig. 1 is existing intellectual valve positioner working principle diagram；
Fig. 2 is a kind of locator nozzle-baffle arrangement schematic diagram of Japan's production；
Fig. 3 is the relation schematic diagram of a kind of Japan the locator nozzle back pressure chamber produced and reference pressure chamber；
Fig. 4 is nozzle-baffle characteristics curve；
Fig. 5 is the structural schematic diagram of the utility model embodiment 1；
Fig. 6 is the structural schematic diagram of the utility model embodiment 2；
Fig. 7 is the working principle diagram of the utility model；
Fig. 8 is difference nozzle-baffle mechanism displacement relation schematic diagram；
In Fig. 1-4,01- baffle plate assembly, 02- baffle, 03- nozzle carrier, 04- locking plate, 05- driver plate, 06- nozzle, 07- gear
Plate, 08- driving source, 09- magnetic circuit component；
In Fig. 5-8,20- baffle plate assembly, 21- baffle, 22- nozzle carrier, 23- holding screw, 24- nozzle, 25- thread bush,
26- shell, 27- diaphragm, 28- diaphragm seat, 29- throttling bolt, 30- constant throttling orifice, 31- filter packing, 32- pressure port, 33- control
Chamber processed, 34- input interface, 35- filter chamber；
Ps- external equipment bleed pressure；
X- nozzle-flapper gap；
Control pressure inside Pn-;
Po- amplifier output pressure.
Specific embodiment
The technical solution of the utility model, but the guarantor of the utility model are described in further detail combined with specific embodiments below
Shield range is not limited to as described below.
Embodiment 1
As shown in figure 5, differential type nozzle flapper pressure regulating device, which includes baffle plate assembly 20, shell 26 and two
Nozzle 24；The baffle 21 of two pieces of linkages is installed, two baffles 21 are located at baffle plate assembly 20 as seen from Figure 1 on baffle plate assembly 20
Ipsilateral, the two baffles 21 central point O that haves mercy on rotates to form a pair of of difference displacement signal, two baffles 21 under the effect of same external drive source
A pair of of difference displacement signal is generated, the driving source in the present embodiment selects magnetic field, structural reference Fig. 8；Baffle plate assembly 20 is two
21 corresponding position of baffle is each to fix a nozzle carrier 22, and the nozzle carrier 22 is respectively threadedly coupled a thread bush 25, the screw thread
Set 25 respectively connects a nozzle 24, so that the outlet side of nozzle 24 is narrowly focused towards baffle 21；The inlet end of nozzle 24 is docked at
On shell 26, bleed pressure input port 34 is opened up on the shell 26, external air source pressure is inputted by bleed pressure input port 34
A piece holding screw 23 is inserted into the guide groove of nozzle 24 by two nozzles 24 by nozzle carrier 22；Two are also provided on shell 26
A for measuring the pressure port 32 of 24 air pressure of nozzle, the pressure port 32 is connected one by one with nozzle 24, the peace of pressure port 32 when pressure regulation
Pressure transmitter is filled, pressure regulation terminates to block pressure port 32, before pressure regulation, manually adjusts thread bush 25 and make two nozzles 24 and baffle
Gap between 21 is equal, and for convenience of adjusting, one section of left hand thread and right-handed thread built in the thread bush 25, nozzle carrier 22 spray
Mouth 24 is respectively charged into thread bush 25, and 25 aperture excircle part of thread bush is evenly distributed with visual groove, the visual position of 22 outer circle of nozzle carrier
It sets and carves a reference line.26 interposed membrane seat 28 of shell fixes diaphragm 27 on the diaphragm seat 28, which divides shell 26
For symmetrical two control chambers 33, two control chambers 33 are connected by constant throttling orifice 30 and bleed pressure input port 34 respectively,
Two nozzles, 24 inlet end docks conducting with two control chambers 33 one by one.Constant throttling orifice 30 is placed in 29 center of throttling bolt, the permanent section
One section of filter chamber 35 is formed between discharge orifice 30 and bleed pressure input port 34, is filled with filter packing 31 in the filter chamber 35, by
Fig. 5 can be seen that pressure port 32 and is directly connected with control chamber 33 by constant throttling orifice 30, and control chamber 33 and nozzle 24 are connected,
The pressure value measured from pressure port 32 is the pressure of nozzle 24, big by adjusting the gap between nozzle 24 and baffle 21
Small that pressure in control chamber 33 is changed, which is shown by pressure gauge, when two pressure gauge readings reach rule
Debugging operations are completed when definite value, in order to enable the storage of reading, result is more intuitively, conveniently, are become in this programme using pressure
Device is sent to be passed to Computer display, storage and management.
Embodiment 2
As shown in fig. 6, the difference of the present embodiment and embodiment 1 is only that two nozzles 24 are located at 21 two sides of baffle, baffle group
Part deflects and generates a pair of of difference displacement signal at baffle both ends.
Working principle explanation:
As shown in fig. 7, passing through gap of the thread bush 25 roughly between two baffles 21 of adjustment and nozzle 24 before input gas source Ps
It is equal.
It loads onto pressure transmitter at the pressure port 32 at both ends, inputs gas source Ps, filter chamber 35 of the Ps through both ends, permanent throttling
Hole 30, throttling bolt 29 separately flow into control chamber 33, nozzle 24A and the nozzle 24B of 27 two sides of diaphragm, most afterwards through nozzle face hole
It sprays.
It stirs thread bush 25 and changes gap between baffle 21 and nozzle 24, while also changing 33 internal pressure of control chamber of two sides
Power, i.e. the display pressure of display, when the display pressure of display reaches authorized pressure, debugging efforts are completed and lock differential machine
Structure removes pressure transmitter and blocks pressure port 32.
Shown in two baffles are set by symmetrical centre of rotating fulcrum O on baffle plate assembly, in external drive source (magnetic field
This patent is not directed to) it acts on left end gap when lower two baffles are rotated clockwise around O point and is reduced to XIt is leftRight end gap increases-△ X simultaneously
Greatly XIt is right+ △ X, left end gap is increased to X when two baffles are rotated counterclockwise around O pointIt is left+ △ X is reduced to X in right end gap simultaneouslyIt is right-△
X produces a pair of synchronous, equivalent, reversed differential signal at both ends, the pressure difference of two control chambers makes diaphragm seat generate axial fortune
It is dynamic.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form, should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and
Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model
It is required that protection scope in.
Claims (7)
1. differential type nozzle flapper pressure regulating device, which is characterized in that the mechanism includes baffle plate assembly (20), shell (26) and two
A nozzle (24)；
The baffle (21) of two pieces of linkages is installed, two baffles under the effect of same external drive source on the baffle plate assembly (20)
(21) a pair of of difference displacement signal is generated；
The baffle plate assembly (20) fixes a nozzle carrier (22) two baffles (21) corresponding position is each, further includes two thread bush
(25), one section of left hand thread and right-handed thread built in thread bush (25), the nozzle carrier (22) are respectively threadedly coupled a thread bush
(25), the thread bush (25) respectively connects a nozzle (24), so that the outlet side of nozzle (24) is narrowly focused towards baffle (21), it will
In guide groove of piece holding screw (23) by nozzle carrier (22) insertion nozzle (24)；
The inlet end of the nozzle (24) is docked on shell (26), opens up bleed pressure input port on the shell (26)
(34), external air source pressure inputs two nozzles (24) by bleed pressure input port (34)；
Two are also provided on the shell (26) for measuring the pressure port (32) of nozzle (24) air pressure, the pressure port (32)
It is connected one by one with nozzle (24), pressure port (32) installs pressure transmitter when pressure regulation, and pressure regulation terminates to block pressure port (32)；
Before pressure regulation, manually adjusts thread bush (25) and make the gap between two nozzles (24) and baffle (21) equal.
2. differential type nozzle flapper pressure regulating device according to claim 1, which is characterized in that film built in the shell (26)
Bar (28) fixes diaphragm (27) on the diaphragm seat (28), which is divided into symmetrical two for shell (26)
Control chamber (33), two control chambers (33) are connected by constant throttling orifice (30) and bleed pressure input port (34) respectively, two nozzles
(24) inlet end docks conducting with two control chambers (33) one by one.
3. differential type nozzle flapper pressure regulating device according to claim 2, which is characterized in that the constant throttling orifice (30) is each
Configured with a throttling bolt (29).
4. differential type nozzle flapper pressure regulating device according to claim 3, which is characterized in that the constant throttling orifice (30) with
One section of filter chamber (35) is formed between bleed pressure input port (34), is filled with filter packing (31) in the filter chamber (35).
5. differential type nozzle flapper pressure regulating device according to claim 4, which is characterized in that the thread bush (25) is left-handed
Threaded bores excircle part is evenly distributed with visual groove, and nozzle carrier (22) the outer circle viewing position carves a reference line.
6. differential type nozzle flapper pressure regulating device according to claim 1, which is characterized in that two baffle (21) is located at
Baffle plate assembly (20) is ipsilateral, and two baffles (21) rich central point (O) rotation forms a pair of of difference displacement signal.
7. differential type nozzle flapper pressure regulating device according to claim 1, which is characterized in that two baffle (21) is located at
Baffle plate assembly (20) two sides move synchronously it to form a pair of of difference displacement signal between two baffles (21) by connecting rod connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821214621.XU CN208417730U (en) | 2018-07-30 | 2018-07-30 | Differential type nozzle flapper pressure regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821214621.XU CN208417730U (en) | 2018-07-30 | 2018-07-30 | Differential type nozzle flapper pressure regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208417730U true CN208417730U (en) | 2019-01-22 |
Family
ID=65123451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821214621.XU Active CN208417730U (en) | 2018-07-30 | 2018-07-30 | Differential type nozzle flapper pressure regulating device |
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| CN (1) | CN208417730U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679294A (en) * | 2018-07-30 | 2018-10-19 | 辰星仪表（成都）有限公司 | Differential type nozzle flapper pressure regulating device |
| CN116498799A (en) * | 2023-06-25 | 2023-07-28 | 成都川力智能流体设备股份有限公司 | Household intelligent full-effect safety device |
-
2018
- 2018-07-30 CN CN201821214621.XU patent/CN208417730U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679294A (en) * | 2018-07-30 | 2018-10-19 | 辰星仪表（成都）有限公司 | Differential type nozzle flapper pressure regulating device |
| CN116498799A (en) * | 2023-06-25 | 2023-07-28 | 成都川力智能流体设备股份有限公司 | Household intelligent full-effect safety device |
| CN116498799B (en) * | 2023-06-25 | 2023-08-29 | 成都川力智能流体设备股份有限公司 | Household intelligent full-effect safety device |
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