CN102252801A - Function centralized operation type differential pressure detection instrument connecting device - Google Patents
Function centralized operation type differential pressure detection instrument connecting device Download PDFInfo
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- CN102252801A CN102252801A CN 201110116415 CN201110116415A CN102252801A CN 102252801 A CN102252801 A CN 102252801A CN 201110116415 CN201110116415 CN 201110116415 CN 201110116415 A CN201110116415 A CN 201110116415A CN 102252801 A CN102252801 A CN 102252801A
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Abstract
The invention relates to a function centralized operation type differential pressure detection instrument connecting device which is characterized by comprising a valve group mechanism and a transmission mechanism, wherein two groups of pressure taking valves and a balance valve are arranged in a valve body of the valve group mechanism, and the two groups of the pressure taking valves are connected through a transmission shaft coupling for realizing synchronous revolution; the balance valve can realize the revolution under the action of the transmission mechanism; a pressure leading pore canal is further processed in the valve body; and the transmission mechanism comprises two groups of incomplete gear intermittent mechanisms and a support plate. The device has the benefits that the requirements can be completed by only inserting a handle into a hexagonal hole for rotation; the centralized operation of connection ways required by various functions during the use of a differential pressure detection instrument can be realized, thereby being simple and convenient; and by adopting time sequence control of transmission and intermittence of incomplete teeth and a locking arc of the transmission, adverse consequences because the stopping and closing positions of the valves are not in place due to failure or careless operation and even deliberate operation can be avoided.
Description
Technical field
Patent of the present invention relates to the measuring instrument coupling arrangement, particularly a kind of global function centralized operation formula differential pressure measuring instrument coupling arrangement.
Background technology
In the process Detection ﹠ Controling, pressure differential (or double pressure) measuring instrument has suitable use amount.This type of instrument is generally as the pressure difference value (or double measuring pressure value) of secondary instrument in order to the output of detection front end primary device.For example, differential pressure pick-up, differential pressure transmitter, dual bellows differential gauges, differential pressure type flow converter etc., back two types of instrument are detected pressures difference and force value simultaneously.
The pressure difference detection instrument in use has the connection request of 4 kinds of application states, is respectively: running status, band are pressed the connection request of zero detection, pressure differential calibration, blowdown operation etc.; Instrument for the measuring pressure of holding concurrently also has " pressure calibration " connection request.
The pressure difference detection instrumentation is that output is connected with primary device high and low pressure side respectively with instrument high and low pressure pressurized room when " running status "; When instrumentation when " band press zero detect ", be that the working pressure with instrument both sides pressurized room is communicated with, the indicating value with the zero-pressure of the high and low side of measuring instrument under same pressure state when not good enough; When carrying out " blowdown operation " in instrument, then be when the working pressure with instrument both sides pressurized room is communicated with, again with pressure at both sides loop and external communications, utilization has the outer spray effect of the actuating medium fluid of pressure, and the non-medium " dirty " that may deposit in the pressurized room of instrument both sides is discharged; Measuring instrument also need regularly carry out field calibration, at this moment should be described by next paragragh, earlier instrument is withdrawed from the connection of " running status ", and make instrument break away from the working pressure loop, afterwards, lay down the jointing of a relevant side again with instrument, insert calibrating device; When " pressure calibration ", then be instrument both sides pressurized room to be in connect under the connection status situation calibration of pressurizeing; When " pressure differential calibration ", need make instrument " high pressure " side pressurized room and calibrating device on-state again, instrument " low pressure " side room is communicated with atmosphere, carries out the calibration of pressure differential.
The pressure difference detection instrument all is the bilateral pressurized, needing measuring instrument to withdraw from that " running status " is preceding must open the valve that is referred to as " equalizing valve " earlier, instrument two pressurized rooms are communicated with, after both sides are in " pressure equilibrium " state, turn-off both sides " pressure measuring valve " again, avoid differing with this, make a certain compression chamber bear " bias voltage " because of the priority that the both sides pressure measuring valve turn-offs; When the needs measuring instrument enter " running status " preceding, also must so operate to avoid " bias voltage ".Pressure difference detection instrument pressurized pressure that room bears may be from very little several kgfs to bigger tens kilograms even hundreds of kgf, and " bias voltage " may cause the damage that can not repair to some instrument; Even some pressure difference detection instrument design " compressive resistance is monolateral " structure, but also need one to recover the normal time of detecting afterwards at " bias voltage ".Therefore in the application of pressure difference detection instrument, it is indispensable having the form of " equalizing valve " connection in the application especially accurate, that measure in real time and carrying out " pressure equilibrium " operation.
At present, realize the connection of the above-mentioned different application state requirement of pressure difference detection instrument, all adopt valve, joint, the pressure guiding pipe line or belt of independent operation to have the valve in impulse duct that web joint (being commonly called as 3 valve groups, 5 valve groups) is installed in the industry.By to connecting the sequential operation of valve, make the impulse loop be in different impulse connection status to satisfy the instrument application requirements.
Obviously, existing interconnection technique operation is very loaded down with trivial details; In loaded down with trivial details operating process, often make mistakes or thick operation. especially exist, when other connection status are returned to " running status " and connect,, make " pressure distortion " because of a certain connection valve stops the tiny leakage that causes not in place that turn-offs.In process control, can influence the judgment accuracy of control even cause out of control; The untrue monitoring result that then causes of data that gained is measured is invalid.When serious, consequence is inestimable.The design people's long-term work is at the defeated collection of high-risk natural gas tube gas distribution station measurement and control area, knows very well having a strong impact on that above-mentioned drawback may cause.If, may produce serious safe consequence because of the tiny leakage that causes not in place of a certain connection valve termination shutoff makes internal pressure monitoring on the low side can not in time enforcement in station control shutoff air inlet or emptying pressure release; Metering in if stand is with exporting the measure monitor distortion in the feasible station of the tiny leakage that causes not in place that is not intended to or has a mind to of pressure differential measuring instrument because of a certain connection valve termination scram position, in the trade transaction metering, concern people's livelihood interests, cause the metering dispute of both sides of supply and demand.For this reason, occurring a kind of " pressure measuring valve " that will connect pressure differential measuring instrument both sides on the market is designed to by operating structure positive and negative thread mechanism control, that can open synchronously or close synchronously, be combined into " 3 valve group " disadvantage that may occur at any time in order to " pressure measuring valve " switch that overcomes the instrument both sides again with another " equalizing valve "; But its " pressure equilibrium " operation still need be by producing drawback not in place to " equalizing valve " with twice operation of " pressure measuring valve ".The design people is for the consideration to safety (pressure protect) and just (trade transaction metering), designed in 1998 once that " patent No. is
ZL 98 2 49848.9 A kind of two formula stable equilibrium valves", adopt the monolever centralized operation, realize that measuring instrument is in the requirement that enters or the " RUN " state of deactivating connects gas circuit, to solve the defective of above-mentioned connection.But it can not satisfy the requirement that the measuring instrument global function is used; Structural design is also not too perfect, the reliability raising of still needing.
Summary of the invention
The purpose of patent of the present invention provide a kind of safe, can stop metering distortion and the very simple and reliable global function centralized operation formula differential pressure measuring instrument coupling arrangement of operation, to fill up the deficiencies in the prior art.
The technical scheme of patent of the present invention is: function centralized operation formula differential pressure measuring instrument coupling arrangement, it is characterized in that: comprise valve group mechanism and gear train, be provided with two groups of pressure measuring valves and equalizing valve in the valve body of valve group mechanism, turn round synchronously by the connection realization of driving linked shaft joint between two groups of pressure measuring valves; Equalizing valve is realized revolution under the gear train effect; Also be processed with the impulse duct in the valve body; Gear train is made up of two groups of partial gear indexing mechanisms and back up pad.
Described function centralized operation formula differential pressure measuring instrument coupling arrangement is characterized in that: described pressure measuring valve is that a middle part is spherical column, and the O RunddichtringO is installed at the two ends of cylinder, and the centre of sphere radial section of middle part spheroid is drilled with
гThe intercommunicating pore of font, the end design of one of pressure measuring valve have square key to connect with the corresponding engaged wheel of gear train, and other end design has the in-line key to link to each other with the crosshead shoe shaft coupling.
Described function centralized operation formula differential pressure measuring instrument coupling arrangement is characterized in that: described equalizing valve is that a middle part is spherical column, and the O RunddichtringO is installed at the two ends of cylinder, and the centre of sphere radial section of middle part spheroid is drilled with
тThe intercommunicating pore of font makes the centre of sphere axial section direction of crossing of spheroid communicate with the latter half of radial section direction of right cylinder, and the front end face design of equalizing valve has the in-line key, links to each other with gear train by the crosshead shoe shaft coupling.
Described function centralized operation formula differential pressure measuring instrument coupling arrangement, it is characterized in that: described gear train comprises that one group is driving wheel with the annular wheel, and outer rotor is interior external tooth engagement partial gear indexing mechanism and one group of external tooth engagement partial gear indexing mechanism of engaged wheel; The ratio of gear of two groups of indexing mechanism driving wheels and engaged wheel imagination tooth is designed to 2:1; The driving wheel design of two groups of indexing mechanisms can be driven synchronously by handle in same rotating shaft and rotate, design has the transmission engaged section that satisfies 5 kinds of application functions of measuring instrument, driving wheel is an engaged section with per 45 ° (per 90 ° of engaged wheels), reality in each engaged section has tooth to cooperate with the locking arc, driven equilibrium valve or pressure measuring valve rotate respectively, the path of realizing a kind of application requirements of measuring instrument connects, each is used link position and is located by steel ball by the locating slot on the annular wheel cylindrical, indicates each to use link position by the outer panels tick lables.Initial and the final position of gear train is limited by the stopper slot of stop screw and gear face.
Described function centralized operation formula differential pressure measuring instrument coupling arrangement, it is characterized in that: the crosshead shoe shaft coupling structure is all adopted in being in transmission connection of described pressure measuring valve and equalizing valve.
Beneficial effect of the present invention is: the present invention only needs handle is inserted hexagonal hole, turns to required application function by the indication of panel and can finish connection request.Realized the differential pressure type measuring instrument use in the centralized operation of connected mode of various functional requirements, finish the troublesome operation that each function is connected with existing technology and compare, very simple and convenient; More significant effect is, by the transmission of incomplete tooth of gear train and locking arc and the sequential control that rests, can stop reliably because of error or thick operation, or even (pressure difference detection in the trade transaction metrology applications) had a mind to and is that the valve that causes stops the scram position adverse consequences that causes not in place.
Description of drawings
Fig. 1 is the outside drawing of the embodiment of the invention.
Fig. 2 is the outside drawing at another visual angle of Fig. 1.
Fig. 3 is pressure measuring valve and hermetically-sealed construction thereof and the synoptic diagram that is in transmission connection of the embodiment of the invention.
Fig. 4 is the pressure measuring valve and the sealing impulse gas channels synoptic diagram thereof of the embodiment of the invention
Fig. 5 is equalizing valve and hermetically-sealed construction thereof and the synoptic diagram that is in transmission connection of the embodiment of the invention.
Fig. 6 is the gas circuit pressure equilibrium guide structure synoptic diagram of the embodiment of the invention.
Fig. 7 is the pressure measuring valve pore passage structure synoptic diagram of the embodiment of the invention.
Fig. 8 is the equalizing valve pore passage structure synoptic diagram of the embodiment of the invention.
Fig. 9 is the driving mechanism group structural representation of the embodiment of the invention.
Figure 10 is the driving mechanism assembly structure synoptic diagram of the embodiment of the invention.
Below by embodiment, and in conjunction with the accompanying drawings the present invention is further described.
Embodiment
Embodiment.
The structure explanation of present embodiment: a kind of global function centralized operation formula differential pressure measuring instrument coupling arrangement comprises valve group mechanism's I and gear train II; In the valve body 1 of valve group mechanism I pressure measuring valve 2 and 3 are installed, pressure measuring valve 2 and 3 is that the middle part is spherical column, and the cylinder two ends are equipped with the O RunddichtringO, and there is the in-line key termination of pressure measuring valve, connects two valves by crosshead shoe shaft coupling 4; The front end of pressure measuring valve 3 is provided with the square key that is connected with driven wheel 10, and designing on pressure measuring valve 2 and the 3 spherical body centre of sphere radial sections has
гFont intercommunicating pore A; Be positioned at 4 mutual upright positions of pressure measuring valve 2 and 3 spherical centre of sphere radial sections at valve body 1, be separately installed with two groups of pressure gas circuits and connect sealing-plug 5, instrument gas circuit connection sealing-plug 6, calibration gas circuit connection sealing-plug 7 and blowdown gas circuit connection sealing-plug 8, the axial section that the instrument gas circuit connects sealing-plug 6 is provided with
+Font intercommunicating pore C, the axial section that other gas circuits connect sealing- plug 5,7,8 is provided with axially extending bore B, D, E; In the valve body 1 of valve group mechanism I equalizing valve 20 is installed also, is connected with driven wheel 13 by crosshead shoe shaft coupling 19, the axial section of equalizing valve 20 is provided with
тFont intercommunicating pore F; Side in the spherical centre of sphere radial level tangent plane position of equalizing valve 20 is equipped with the balance gas circuit and connects sealing-plug 22, and opposite side is equipped with sealing-plug 21, and the axial section that the balance gas circuit connects sealing-plug 22 is provided with
тFont intercommunicating pore G; Be processed with in the valve body 1 and lead to impulse duct H and I, the J that two groups of instrument gas circuits connect the hole C on the sealing-plug 6.
The gear train II comprises two groups of partial gear indexing mechanisms, be installed on the back up pad 14, wherein one group is the interior outer rotor indexing mechanism that drives pressure measuring valve, by outer rotor 10 and annular wheel 11 engaged transmission, the outer rotor 10 imaginary number of teeth 28 teeth are provided with 3 sections locking arcs that take a backlash in 0 ° of its gear ring, 3 positions of 90 °, 180 °; The annular wheel 11 imaginary number of teeth 56 teeth, on the annular wheel gear ring, be engaging element with per 45 °, be provided with the reality that satisfies follower gear 10 transmission requirements tooth and locking arc are arranged, be provided with positioning hole groove 18 on 5 positions of 0 °, 45 °, 90 °, 135 °, 225 ° of the external cylindrical surface of annular wheel 11, locate by the steel ball positioning component that is installed on the valve body 1 during rotation, by the 17 indication working positions of the location mark board on the back up pad 14, annular wheel 11 1 has outrigger shaft, and axle head has the hexagonal hole that connects handle; The outer rotor indexing mechanism of another group driven equilibrium valve, by outer rotor 12 and outer rotor 13 engaged transmission, the gear 13 imaginary number of teeth 28 teeth are provided with 4 sections locking arcs that take a backlash in 0 ° of its gear ring, 4 positions of 90 °, 180 °, 270 °; Driving gear 12 is installed on the outrigger shaft of annular wheel 11, the imagination number of teeth is 56 teeth, design has two sections realities that satisfy follower gear 13 transmission requirements to have tooth and two-phase lock to end arc on gear ring, the end face of driving gear 12 designs the stopper slot 16 of restricted two driving wheels, 11,12 corners (being 270 °), with the position limiting structure of stop screw 15 composition gear trains.
User mode operation and parts action specification are as follows.
The differential pressure type measuring instrument is used application state, " RUN " always.
Tick lables indication on gear train gear 12 transmission shafts is in the " RUN " position, and two groups of gear indexing mechanisms are in locking arc engagement place.At this moment, pressure measuring valve 2 and 3
гFont intercommunicating pore A connects hole B that two groups of pressure gas circuits connect sealing-plugs 5 is connected sealing-plug 6 with the instrument gas circuit hole C respectively; On the equalizing valve 21
тThe throughhole portions that font intercommunicating pore F connects spheroid is in vertical position, and interface channel G, H, I, J that the instrument gas circuit connects two hole C of sealing-plug 6 are blocked; The primary device high and low pressure wall pressure that this moment is monitored enters differential pressure type measuring instrument high and low pressure pressurized room respectively via hole B-hole A-hole C, and instrumentation is in the operation connection status.
Differential pressure type measuring instrument pressure differential work zero-bit detects to be used, " band presses zero ".
Handle clockwise rotates 45 ° with transmission shaft, and the tick lables indication is in " band presses zero " position.At this moment, first engaged section of the outer rotor indexing mechanism 12/13 of driven equilibrium valve 21 has the tooth engagement to rotate for real, when outer rotor 12 rotates 45 °, because ratio of gear is 2:1,13 of outer rotors are rotated 90 °, thereby driven equilibrium valve 21 turns round 90 °, makes on the equalizing valve 21
тThe throughhole portions that font intercommunicating pore F connects spheroid is horizontal, and two hole C that the instrument gas circuit connects sealing-plug 6 are switched on by passage F, G, H, I, J; In this corner of transmission shaft, the interior outer rotor indexing mechanism 10/11 that drives pressure measuring valve is in locking arc engaged section, pressure measuring valve
гFont intercommunicating pore A connection status is constant; So monitored primary device high side pressure is via hole B-hole A-hole C-hole I-hole J-hole F-hole G-hole H(or hole B-hole A-hole C-hole H-hole G-hole F-hole J-hole I) to down-group is connected with the hole C of differential pressure type measuring instrument low pressure pressurized room, make the measuring instrument both sides be in zero pressure difference state under the working pressure, the test of the pressure differential zero-bit when accepting to have pressure.
Pressure calibration when the differential pressure type measuring instrument has pressure detection concurrently is used, " correction power ".
Again the handle transmission shaft is clockwise rotated 45 °, tick lables is indicated in " correction power " position.Around here, second engaged section of the outer rotor indexing mechanism 12/13 of driven equilibrium valve is the engagement of locking arc, on the equalizing valve 21
тThe connection status of the throughhole portions of font intercommunicating pore F perforation spheroid is constant, that is measuring instrument high and low pressure pressurized room both sides still are in the state of being switched on; In this transmission engaged section, the inside and outside between cog that the drives pressure measuring valve mechanism 10/11 of having a rest enters and has the tooth engagement to rotate in fact, and driving wheel 10 rotates 45 °, because ratio of gear is 2:1, drives 90 ° of pressure measuring valves 2/3 revolutions thereby engaged wheel 11 clockwise rotates 90 °; So, pressure measuring valve 2/3
гFont intercommunicating pore A leaves the hole B that the pressure gas circuit connects sealing-plug 5, cut off the gas circuit that primary device high and low pressure wall pressure is led to measuring instrument high and low pressure room, and respectively the hole C of two groups of instrument gas circuits connection sealing-plugs 6 has been connected the hole D connection of sealing-plug 7 with the calibration gas circuit; The high and low pressure pressurized room of measuring instrument is via hole D-hole A-hole C-hole I-hole J-hole F-hole G-hole H(or hole D-hole A-hole C-hole H-hole G-hole F-hole J-hole I) to down-group is connected with the hole C of differential pressure type measuring instrument pressurized room, at this moment, unload arbitrary calibration interface plug 11, connect standard connecting pipe joint; Inject the normal pressure fluid media (medium) of standard output, differential pressure type measuring instrument both sides pressurized room bears the standard normal pressure simultaneously, carries out the pressure survey accuracy calibration of measuring instrument.
The pressure differential calibration application of differential pressure type measuring instrument, " school differential pressure ".
Continuation clockwise rotates the 3rd 45 ° of corners with the handle transmission shaft, and tick lables is indicated in " school differential pressure " position.Around here, the outer rotor indexing mechanism 12/13 of driven equilibrium valve enters the 3rd engaged section the tooth engagement in fact, and driving wheel 12 is rotated 45 °, because ratio of gear is 2:1, thereby engaged wheel 13 rotates 90 ° of 90 ° of driven equilibrium valves, 21 revolutions, makes on the equalizing valve 21
тThe throughhole portions that font intercommunicating pore F connects spheroid goes to the upright position, and blocking-up connects passage G, H, I, the J that two groups of instrument gas circuits connect sealing-plug 6 hole C; In this corner of transmission shaft, the interior outer rotor indexing mechanism 10/11 that drives pressure measuring valve is in locking arc engaged section, pressure measuring valve
гThe connection status of font intercommunicating pore A is constant; So the hole D of two groups of calibration gas circuit connection sealing-plugs 7 is communicated with differential pressure type measuring instrument high and low pressure pressurized room respectively; At this moment, unload two calibration interface plugs 11, the calibration interface of standard connecting pipe joint with differential pressure type measuring instrument high pressure pressurized room one side is connected, the calibration interface emptying of differential pressure type measuring instrument low pressure pressurized room one side (connecting) with atmosphere, inject the normal pressure fluid media (medium) of standard output, the high side pressurized of differential pressure type measuring instrument room bears the standard normal pressure, carries out the pressure differential accuracy of measurement calibration of measuring instrument.
" blowdown " operation of differential pressure type measuring instrument.
The handle transmission shaft is clockwise rotated 90 ° (two engagement positions), tick lables is indicated in " blowdown " position again.Around here, the outer rotor indexing mechanism 12/13 of driven equilibrium valve enters the 4th, the 5th engaged section into the locking arc, equalizing valve
тThe throughhole portions that font intercommunicating pore F connects spheroid keeps constant with the connection status of " school differential pressure ", that is measuring instrument high and low pressure pressurized room both sides still are in the blocking-up connection status; In these 90 ° of corners of transmission shaft, the interior outer rotor indexing mechanism 10/11 that drives pressure measuring valve enters the 4th, the 5th has tooth engaged section, pressure measuring valve to be rotated 180 ° in fact; So two groups of pressure measuring valves 2/3
гThe hole B that font intercommunicating pore A connects sealing-plug 5 with two groups of logical pressure gas circuits respectively is connected sealing-plug 10 with the blowdown gas circuit hole E is connected, that is respectively the primary device high and low pressure side and the external space are connected, this moment, the pressure fluid medium in the primary device can outwards spray, then with in the pressurized room of measuring instrument both sides and " dirty " of the non-transmission pressure medium that may deposit in this device connecting hole carry and discharge.
As seen said process makes position indicator from five indicating positions of zero degree position rotation between 225 ° when using single handle to drive gear train, just can obtain the connection request of the required various application states of differential pressure type measuring instrument; And, no matter use arbitrary application function can both guarantee that the pressure difference detection instrument is before withdrawing from or enter the work " RUN " from clockwise or counter-clockwise direction, at first measuring instrument both sides pressurized room is communicated with " pressure equilibrium ", thereby protects instrument not to be subjected to " bias voltage " influence reliably; In operating process, do not exist to be not intended to or to have a mind to cause one of equalizing valve or pressure measuring valve switch " leakages " not in place yet, thereby overcome the drawback of prior art well to the condition that makes measuring instrument monitoring distortion and possible.
Claims (5)
1. function centralized operation formula differential pressure measuring instrument coupling arrangement, it is characterized in that: comprise valve group mechanism and gear train, be provided with two groups of pressure measuring valves and equalizing valve in the valve body of valve group mechanism, turn round synchronously by the connection realization of driving linked shaft joint between two groups of pressure measuring valves; Equalizing valve is realized revolution under the gear train effect; Also be processed with the impulse duct in the valve body; Gear train is made up of two groups of partial gear indexing mechanisms and back up pad.
2. function centralized operation formula differential pressure measuring instrument coupling arrangement as claimed in claim 1 is characterized in that: described pressure measuring valve is that a middle part is spherical column, and the O RunddichtringO is installed at the two ends of cylinder, and the centre of sphere radial section of middle part spheroid is drilled with
гThe intercommunicating pore of font, the end design of one of pressure measuring valve have square key to connect with the corresponding engaged wheel of gear train, and other end design has the in-line key to link to each other with the crosshead shoe shaft coupling.
3. function centralized operation formula differential pressure measuring instrument coupling arrangement as claimed in claim 1 is characterized in that: described equalizing valve is that a middle part is spherical column, and the O RunddichtringO is installed at the two ends of cylinder, and the centre of sphere radial section of middle part spheroid is drilled with
тThe intercommunicating pore of font makes the centre of sphere axial section direction of crossing of spheroid communicate with the latter half of radial section direction of right cylinder, and the front end face design of equalizing valve has the in-line key, links to each other with gear train by the crosshead shoe shaft coupling.
4. function centralized operation formula differential pressure measuring instrument coupling arrangement as claimed in claim 1, it is characterized in that: described gear train comprises that one group is driving wheel with the annular wheel, and outer rotor is interior external tooth engagement partial gear indexing mechanism and one group of external tooth engagement partial gear indexing mechanism of engaged wheel; The ratio of gear of two groups of indexing mechanism driving wheels and engaged wheel imagination tooth is designed to 2:1; The driving wheel design of two groups of indexing mechanisms can be driven synchronously by handle in same rotating shaft and rotate, design has the transmission engaged section that satisfies 5 kinds of application functions of measuring instrument, driving wheel is an engaged section with per 45 ° (per 90 ° of engaged wheels), reality in each engaged section has tooth to cooperate with the locking arc, driven equilibrium valve or pressure measuring valve rotate respectively, the path of realizing a kind of application requirements of measuring instrument connects, each is used link position and is located by steel ball by the locating slot on the annular wheel cylindrical, indicate each to use link position by the outer panels tick lables, the initial and final position of gear train is limited by the stopper slot of stop screw and gear face.
5. described function centralized operation formula differential pressure measuring instrument coupling arrangement, it is characterized in that: the crosshead shoe shaft coupling structure is all adopted in being in transmission connection of described pressure measuring valve and equalizing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110116415 CN102252801B (en) | 2011-05-06 | 2011-05-06 | Function centralized operation type differential pressure detection instrument connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110116415 CN102252801B (en) | 2011-05-06 | 2011-05-06 | Function centralized operation type differential pressure detection instrument connecting device |
Publications (2)
| Publication Number | Publication Date |
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| CN102252801A true CN102252801A (en) | 2011-11-23 |
| CN102252801B CN102252801B (en) | 2013-02-27 |
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| CN 201110116415 Expired - Fee Related CN102252801B (en) | 2011-05-06 | 2011-05-06 | Function centralized operation type differential pressure detection instrument connecting device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2379667Y (en) * | 1998-12-04 | 2000-05-24 | 宜宾机电一体化研究所 | Two position type safety and balancing valve |
| JP2002130502A (en) * | 2000-10-30 | 2002-05-09 | Toho Gas Co Ltd | Differential pressure drive valve |
| US20040237656A1 (en) * | 2003-06-02 | 2004-12-02 | Smc Corporation | Pressure regulator with gauge embedded handle |
| CN101603606A (en) * | 2008-06-13 | 2009-12-16 | 张锦 | Multifunctional five-group valve |
-
2011
- 2011-05-06 CN CN 201110116415 patent/CN102252801B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2379667Y (en) * | 1998-12-04 | 2000-05-24 | 宜宾机电一体化研究所 | Two position type safety and balancing valve |
| JP2002130502A (en) * | 2000-10-30 | 2002-05-09 | Toho Gas Co Ltd | Differential pressure drive valve |
| US20040237656A1 (en) * | 2003-06-02 | 2004-12-02 | Smc Corporation | Pressure regulator with gauge embedded handle |
| CN101603606A (en) * | 2008-06-13 | 2009-12-16 | 张锦 | Multifunctional five-group valve |
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| CN102252801B (en) | 2013-02-27 |
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