WO2013098835A2 - A variable rod-in-tube pressure reducer with thermal and safety relief valve device - Google Patents
A variable rod-in-tube pressure reducer with thermal and safety relief valve device Download PDFInfo
- Publication number
- WO2013098835A2 WO2013098835A2 PCT/IN2012/000679 IN2012000679W WO2013098835A2 WO 2013098835 A2 WO2013098835 A2 WO 2013098835A2 IN 2012000679 W IN2012000679 W IN 2012000679W WO 2013098835 A2 WO2013098835 A2 WO 2013098835A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thermal
- precision
- safety relief
- relief valve
- tubular body
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
- G05D16/103—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger the sensing element placed between the inlet and outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/105—Three-way check or safety valves with two or more closure members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
Definitions
- Present invention relates to a Variable rod-in-tube pressure reducer with thermal and safety relief valve assembly. More particularly the Variable rod-in-tube pressure reducer with thermal and safety relief valve device is a compact version of High Pressure reduction and High Temperature Sample line shutoff.
- U.S. Patent No. RE37, 153 A variable pressure reducing device for reducing high pressure in steam and hot water samples forces the liquid through an annular passageway between a pair of rods within a complementary pair of tubes.
- the flow rate through the rod-in-tube device, or the pressure drop across the device, is adjustable by means of a rotatable guide screw for adjusting the position of the rods within the tubes.
- the rods are tapered to provide a smooth flow of liquid through the device.
- the seal around the guide screw is self energized by means of a seal jacket between a valve gland and a stem portion of the guide screw constructed so that the biasing force of a spring on the seal jacket is supplemented by pressure from liquid flowing through the device
- the guide screw is centered within the valve gland to keep the guide screw properly aligned, particularly when the device is used with a motor for rotating the guide screw to adjust the position of the rods. But the device of this patent is not having feature for High Pressure reduction and High Temperature Sample line shutoff.
- Object of the present invention is to develop a Variable rod-in-tube pressure reducer with thermal and safety relief valve assembly.
- Yet another object of the present invention is to develop a system having online cleaning facility.
- variable rod-in-tube pressure reducer with thermal and safety relief va!ve device comprising a tubular body provided at one end with a bonnet engaged by a bonnet nut holding a cap nut mounted therein a spindle with an operating handle; a pair tapered rod assembly movabiy engaged to the said spindle mounted in a pair of precision holes in the direction longitudinal parallel to the axis extending from the said bonnet in the said tubular body; other end of the said tubular body having a manifold provided therein a pair of precision holes extending at partial length at one end joined to the said matching respective precision holes of tubular body; other end of the one of the said precision hole provided with inlet connector and other end of the second of the said precision hole provided with on line drain with plug through a on line drain valve; the said second precision hole extended further to the manifold out let provided with thermal shut off valve; a sample isolation valve provided in the said extended portion of second precision hole to connect to the a sample out let port with plug; a safety
- Figure 1 shows front view of the a variable rod-in-tube pressure reducer with thermal and safety relief valve device according to invention
- Figure 1A is schematic diagram of figure 1 ;
- FIG. 2A sectional front view of the a variable rod-in-tube pressure reducer with thermal and safety relief valve device according to invention
- Figure 2B sectional plan view of device figure T;
- Figure 2C end view of figure 2A
- FIG. 1 Figure 2D end view of figure 2B
- Figure 3A is sectional plan view of figure 1 showing the normal steam flow through the isolation valve
- Figure 3B shows the schematic diagram flow of steam in the device of figure 3A
- Figure 4 A is sectional plan view of figure 1 showing the blow down steam flow through blow down valve
- Figure 4B show the schematic diagram steam flow through device of figure 4A
- Figure 5A is sectional plan view of figure 1 showing the critical steam flow through the safety relief valve
- Figure 5B is schematic diagram of figure 5A.
- a variable rod-in-tube pressure reducer with thermal and safety relief valve device comprising a tubular body 5 provided at one end with a bonnet 4 with bonnet nut 3 holding a cap 2 nut mounted therein a spindle 1A with an operating handle 1.
- a pair tapered rod 4A assembly movably engaged to the said spindle mounted in a pair of precision holes in the direction longitudinal parallel to the axis extending from the said bonnet 4 in the said tubular body.
- the other end of the said tubular body 5 having a manifold 14 provided therein a pair of precision holes extending at partial length at one end joined to the said matching respective precision holes of tubular body 5.
- the said pair of precision holes provided of partial length in the tubular body in the longitudinal direction parallel to axis and partially in the manifold.
- the holes are tapered matching with that of tapered rods4A.
- the said rods 4A fixed to a strip member having threaded hole engaged to the said spindlelA screw threads. This facilitates moving the of said tapered rod to and pro by rotation of handle 1.
- the said tapered rods 4A made of stainless steel.
- the said tubular body 5 and manifold 14 made by casting in situ made of stainless steel material.
- VRTS is used to control the pressure and temperature control. This device reduces the pressure and also cut-off the liquid flow in case of high temperature by using temperature control valve.
- ON-Line cleaning Clean in place-lf blockage occurs, the rods can be retracted by handle so that system pressure can blow the solid matter through via online drain port.
- Double stage pressure reduction VRTS is reducing the pressure by two rods and also there is one more isolation valve is provided on the manifold. The fluctuation and precise pressure control will be done by secondary isolation valve.
- High-temperature Design Generally most of the pressure reducers used for sampling system is having maximum operating temperature of 80 deg C to 200 Deg C. Our new can withstand very high operating temperature up to 550Deg C. for maintaining these high temperatures, we have used Graphite rings and metal to metal seating arrangement which is unique
- the pressure reducers of this invention designed to work at 550 Deg C & 400
- the pressure reducer shall not fail during sample cooler coil ruptures / failures, cooling water supply failures, power supply failures etc.
- the pressure reducing valve shall have Bulit-in sample Blowdown valve and Sample pressure relief valve (Safety valve) In the event of Higher temperature cut-off, provision shall be made for on-line grab sample collection. These valves shall have built-in grab sample valve
- the pressure reducer must have built in High Temperature cut off System shall be through automatic high temperature sample shutoff valve with automatic reset, These valves shall be rated for 3000 PSIG pressure & body temperature shall be upto 600 Deg F. These valves shall be purely mechanical &does not use any power or air supply to protect the analyzer sensors from over temperature sample, should be used. Thermal shut off valve, should be installed for high temperature sample shut off.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Safety Valves (AREA)
Abstract
The invention relate to a variable rod-in-tube pressure reducer with thermal and safety relief valve device. The said comprises a tubular body 5 provided at one end with a bonnet 4 with bonnet nut 3 holding a cap 2 nut mounted therein a spindle 1A with an operating handle 1. A pair tapered rod 4A assembly movably engaged to the said spindle mounted in a pair of precision holes extending from the said bonnet 4 in the said tubular body. The other end of the said tubular body 5 having a manifold 14 provided therein a pair of precision holes extending at partial length at one end joined to the said matching respective precision holes of tubular body 5. The other end of the one of the said precision hole provided with inlet connector 6 and other end of the second of the said precision provided with on line drain port with plug through a on line drain valve 7. The said second precision hole extended further to the manifold out let provided with thermal shut off valve 10. A sample isolation valve 9 provided in the said extended portion of second precision hole to connect to a sample out let port with plug 11. A safety relief valve 8 connected to the said extended portion of the said the precision hole.
Description
T1TLE:-
A VARIABLE ROD-IN-TUBE PRESSURE REDUCER WITH THERMAL AND SAFETY RELIEF VALVE DEVICE
FIELD OF THE INVENTION:-
Present invention relates to a Variable rod-in-tube pressure reducer with thermal and safety relief valve assembly. More particularly the Variable rod-in-tube pressure reducer with thermal and safety relief valve device is a compact version of High Pressure reduction and High Temperature Sample line shutoff.
BACK GROUND OF INVENTION:- In modern Power Plants requires Steam and Water Analysis System for Chemical Analysis of water and. steam samples/ Reliable and stable high pressure reduction & High Temperature shutoff are presents sampling problems for the system designer. VRTS is designed to solve both reliable high pressure reductions by rod-in-tube technOlogy and high temperature sample cut off by thermal expansion/contraction of element technology. Also inbuilt clean in place valve avoids plugging of valves. The Annual Book of ASTM Standards, ASTM Designation D3370 recommends rod in tube pressure reducer for samples pressure greater than 500 psig (34.5barg).
PRIOR ART:-
U.S. Patent No. RE37, 153 A variable pressure reducing device for reducing high pressure in steam and hot water samples forces the liquid through an annular passageway between a pair of rods within a complementary pair of tubes. The flow rate through the rod-in-tube device, or the pressure drop across the device, is adjustable by means of a rotatable guide screw for adjusting the position of the rods within the tubes. The rods are tapered to provide a smooth flow of liquid through the device. The seal around the guide screw is self energized by means of a seal jacket between a valve gland and a stem portion of the guide screw constructed so that the biasing force of a spring on the seal jacket is supplemented by pressure from liquid
flowing through the device The guide screw is centered within the valve gland to keep the guide screw properly aligned, particularly when the device is used with a motor for rotating the guide screw to adjust the position of the rods. But the device of this patent is not having feature for High Pressure reduction and High Temperature Sample line shutoff.
Present used systems of pressure reduction are very old method and bulky design. These systems are having lot of maintenance, less features, bulky design and not rated to higher temperature and pressure which is essential for true representative sampling. Presently most of the companies use eight different components for each of every control. System was much bulky, number of mandays are spent for cleaning, maintenance, and other issues. Electricity is also used for wet sampling which is hazardous for operator. Following are the disadvantages and/or drawbacks of the prior art:
· Not rated for high temperature (550 Deg C)
» On-line cleaning is not possible
• Every time system to shut-down for 3 days. Due to this lot of chemicals are wasted in the downstream of system
• On-line laboratory sampling is not possible
· No-high temperature contact are available
• Lot of tubing and fitting are used which are leak points
• More time required for assembly
• System is bulky
• Very difficult to operate
· Safety valve is not built-in which is hazard to operator and damage the instruments
• No-secondary pressure control is possible
• Power supply is used for high temperature control which is not recommended for liquid systems which are designed for wet conditions and many more
o Tubing will bend during assembly and product will be of no-use if tube bends
• lot of welding is used and during welding process there is air pollution
• Many engineers and technicians are required for maintenance and also lot of wastage of cables and other electrical items
OBJECT OF THE PRESENT INVENTION:-
Object of the present invention is to develop a Variable rod-in-tube pressure reducer with thermal and safety relief valve assembly.
It is also object of the present invention to eliminate the drawbacks and/or disadvantages of the prior art.
It is also the object of the present invention to develop a system having the pressure reducer rated for high temperature upto 550 Deg C and high pressure.
Yet another object of the present invention is to develop a system having online cleaning facility.
STATEMENT OF INVENTION:-
Accordingly the invention provides a variable rod-in-tube pressure reducer with thermal and safety relief va!ve device comprising a tubular body provided at one end with a bonnet engaged by a bonnet nut holding a cap nut mounted therein a spindle with an operating handle; a pair tapered rod assembly movabiy engaged to the said spindle mounted in a pair of precision holes in the direction longitudinal parallel to the axis extending from the said bonnet in the said tubular body; other end of the said tubular body having a manifold provided therein a pair of precision holes extending at partial length at one end joined to the said matching respective precision holes of tubular body; other end of the one of the said precision hole provided with inlet connector and other end of the second of the said precision hole provided with on line drain with plug through a on line drain valve; the said second precision hole extended further to the manifold out let provided with thermal shut off valve; a sample isolation valve provided in the said extended portion of second precision hole to connect to the a sample out let port with plug; a safety relief valve connected to the said extended portion of the said the precision hole.
BRIEF DESCRIPTION OF DRAWINGS:-
The invention is described with reference to figures of the accompanying drawing wherein;
Figure 1 shows front view of the a variable rod-in-tube pressure reducer with thermal and safety relief valve device according to invention;
Figure 1A is schematic diagram of figure 1 ;
Figure 2A sectional front view of the a variable rod-in-tube pressure reducer with thermal and safety relief valve device according to invention;
Figure 2B sectional plan view of device figure T;
Figure 2C end view of figure 2A;
Figure 2D end view of figure 2B;
Figure 3A is sectional plan view of figure 1 showing the normal steam flow through the isolation valve;
Figure 3B shows the schematic diagram flow of steam in the device of figure 3A;
Figure 4 A is sectional plan view of figure 1 showing the blow down steam flow through blow down valve;
Figure 4B show the schematic diagram steam flow through device of figure 4A;
Figure 5A is sectional plan view of figure 1 showing the critical steam flow through the safety relief valve;
Figure 5B is schematic diagram of figure 5A.
BRIEF DESCRIPTION OF THE iNVENTION:- Referring to figures 1 to 5A a variable rod-in-tube pressure reducer with thermal and safety relief valve device comprising a tubular body 5 provided at one end with a bonnet 4 with bonnet nut 3 holding a cap 2 nut mounted therein a spindle 1A with an operating handle 1. A pair tapered rod 4A assembly movably engaged to the said spindle mounted in a pair of precision holes in the direction longitudinal parallel to the axis extending from the said bonnet 4 in the said tubular body. The other end of the said tubular body 5 having a manifold 14 provided therein a pair of precision holes extending at partial length at one end joined to the said matching respective precision holes of tubular body 5. The other end of the one of the said precision hole provided with inlet connector 6 and other end of the second of the said
precision provided with on line drain port with plug through a on line drain valve 7. The said second precision hole extended further to the manifold out let provided with thermal shut off valve 10. A sample isolation valve 9 provided in the said extended portion of second precision hole to connect to the sample out let port with plug 1 1. A safety relief valve 8 connected to the said extended portion of the said the precision hole.
The said pair of precision holes provided of partial length in the tubular body in the longitudinal direction parallel to axis and partially in the manifold. The holes are tapered matching with that of tapered rods4A.
The said rods 4A fixed to a strip member having threaded hole engaged to the said spindlelA screw threads. This facilitates moving the of said tapered rod to and pro by rotation of handle 1.
The said tapered rods 4A made of stainless steel. The said tubular body 5 and manifold 14 made by casting in situ made of stainless steel material.
As per the recommendation of ASME PTC 19.1 1 standards, Sample pressures above 30 bar the pressure reduction should be achieved by fixed pressure reducing elements with Rod in tube type principle of operation. These pressure reducers should be cleaned Online without removing the components from the process pipeline. The cleaning operation shall be completed within Five minutes
Working:
VRTS is used to control the pressure and temperature control. This device reduces the pressure and also cut-off the liquid flow in case of high temperature by using temperature control valve. The step-by-step functions and operations are explained as follows
1 ) Pressure reduction The high pressure fluid enters at inlet port, flows past one rod, turns and flow past the other rod, then out via bottom port. Pressure drop is the function of the length of the rods inserted into barrel. The pressure is reduced smoothly under laminar flow conditions. The rod position is
controlled externally by turning the handle, and outlet pressure can be adjusted while sample is flowing.
) ON-Line cleaning: Clean in place-lf blockage occurs, the rods can be retracted by handle so that system pressure can blow the solid matter through via online drain port. In case of malfunctioning of pressure reducer,) Double stage pressure reduction: VRTS is reducing the pressure by two rods and also there is one more isolation valve is provided on the manifold. The fluctuation and precise pressure control will be done by secondary isolation valve.
) Built-in Safety Valve: In case of high pressure, the fluid will be diverted to drain through built-in safety valve. The set pressure of this safety valve will be adjusted by setting the grub-screw and knob provided inside the safety relief valve. If liquid pressure excess the set of pressure reducer, then the flow will be diverted and downstream will be protected from high pressure
) Built-in Temperature Control valve: At the bottom of the valve, there is automatic temperature control valve which senses the temperature and controls the flow of the liquid, if the temperature is this liquid crosses the set point, the liquid flow to process will be stopped and system installed on the downstream will be protected from high temperature
) Built-in Temperature contacts: The right bottom port is for temperature contact output for high sample temperature alarm in event of high sample temperature due to lack of cooling water quantity in sample cooler, the temperature sensor will provide the contacts to DCS system to customer.) Grab Sampling: In case of high temperature, the temperature control valve will cut-off the flow of liquid to process. As per the standard sampling procedures, the customer requires sample collection and off-line measurement every hour. To facilitate this, our new product is having one separate isolation valve to collect the sample at high temperatures without disturbing any process connections.
) High-temperature Design: Generally most of the pressure reducers used for sampling system is having maximum operating temperature of 80 deg C to 200 Deg C. Our new can withstand very high operating temperature up to
550Deg C. for maintaining these high temperatures, we have used Graphite rings and metal to metal seating arrangement which is unique
9) Compact Design : Since we have designed our VRTS which is equivalent to 10 different components and mounted in one simple manifold type design, it is saves lot of installation space, material, tubing and reduces maintenance time, cost, and very easy to operate
The pressure reducers of this invention designed to work at 550 Deg C & 400
Bar pressure. The pressure reducer shall not fail during sample cooler coil ruptures / failures, cooling water supply failures, power supply failures etc.
The pressure reducing valve shall have Bulit-in sample Blowdown valve and Sample pressure relief valve (Safety valve) In the event of Higher temperature cut-off, provision shall be made for on-line grab sample collection. These valves shall have built-in grab sample valve
The pressure reducer must have built in High Temperature cut off System shall be through automatic high temperature sample shutoff valve with automatic reset, These valves shall be rated for 3000 PSIG pressure & body temperature shall be upto 600 Deg F. These valves shall be purely mechanical &does not use any power or air supply to protect the analyzer sensors from over temperature sample, should be used. Thermal shut off valve, should be installed for high temperature sample shut off.
No power and Air supply should be required for High temperature protection used in sample conditioning systems. No temperature switch and Solenoid / pneumatic valves should be used for high temperature cut off as these require electrical power supply /instrument air supply. This is to avoid" any operator hazards in the event of short circuit due to wet conditions and also to avoid chattering problems of temperature switch and solenoid coil.
In the event of high temperature cut off the pressure reducers shall have in-built RTD
temperature output contacts and the same can be connected to DCS/recorder for annunciation purpose.
ADVANTAGES OF THE PRESENT INVENTION
• With new system, the pressure reducer is rated for high temperature upto 550 Deg C and high pressure
• No Filters are required
• Cleaning is on-line that too also without using any tools.
• No-shut-down is required. Cleaning can be done in just one min simply by rotating knob for 20 turns and re-apply the pressure
• During high temperature cut-off, the operator can collect the sample through separate port
• Much compact, fully stainless steel construction
• No waste of tubings, man power, assembly time,
• No power supply required (Energy Saving)
• Secondary pressure control is provided
• High temperature alarm contact are provided
• Safety valve is built-in with the system
« No-welding, no-tubing in the system (Energy savings and no pollution in manufacturing)
• It is replacement of almost 10 components with one,
• Easy maintenance with less components with long guarantee life of component
• Even a Bell boy can operate the system
Claims
CLAIM:-
A variable rod-in-tube pressure reducer with thermal and safety relief valve device comprising a tubular body provided at one end with a bonnet engaged by a bonnet nut holding a cap nut mounted therein a spindle with an operating handle; a pair tapered rod assembly movably engaged to the said spindle mounted in a pair of precision holes in the direction longitudinal parallel to the axis extending from the said bonnet in the said tubular body; other end of the said tubular body having a manifold provided therein a pair of precision holes extending at partial length at one end joined to the said matching respective precision holes of tubular body; other end of the one of the said precision hole provided with inlet connector and other end of the second of the said precision hole provided with on line drain with plug through a on line drain valve; the said second precision hole extended further to the manifold out let provided with thermal shut off valve; a sample isolation va!ve provided in the said extended portion of second precision hole to connect to the a sample out let port with plug; a safety relief valve connected to the said extended portion of the said the precision hole.
A variable rod-in-tube pressure reducer with thermal and safety relief vaive device as claimed in claim 1 wherein the said pair of precision holes partially in the tubular body and partially in the manifold tapered matching with that of tapered rods.
A variable rod-in-tube pressure reducer with thermal and safety relief valve device as claimed in claims 1 and 2 wherein the said rods fixed to a strip member having treaded hole engaged to the said spindle screw treads.
A variable rod-in-tube pressure reducer with thermal and safety relief valve device as claimed claims 1 to 3 wherein the said tapered rods made of stainless steel.
A variable rod-in-tube pressure reducer with thermal and safety relief valve device as claimed in claims 1 to 4 wherein the said tubular body and manifold made by casting in situ made of stainless steel material.
A variable r d-in-tube pressure reducer with thermal and safety relief valve device as claimed in claims 1 to 5 wherein the said sample out let port with plug provided with temperature sensor switching alarm to DCS system.
A variable rod-in-tube pressure reducer with thermal and safety relief valve device as claimed in claimsl to 6 wherein the said tapered rods provided with graphite rings and metal to metal seating arrangement
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN1216/MUM/2011 | 2011-10-13 | ||
| IN1216MU2011 | 2011-10-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2013098835A2 true WO2013098835A2 (en) | 2013-07-04 |
| WO2013098835A3 WO2013098835A3 (en) | 2013-08-22 |
Family
ID=48698736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IN2012/000679 WO2013098835A2 (en) | 2011-10-13 | 2012-10-12 | A variable rod-in-tube pressure reducer with thermal and safety relief valve device |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2013098835A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU171369U1 (en) * | 2016-01-26 | 2017-05-29 | Марат Асгатович Гимадиев | MECHATRONIC SYSTEM OF PREPARATION OF THE Sample of the HEAT CARRIER |
| CN111689475A (en) * | 2020-06-16 | 2020-09-22 | 聊城鲁西双氧水新材料科技有限公司 | Online cleaning method and device for blockage of instrument source taking point |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333648A (en) * | 1992-10-13 | 1994-08-02 | Sentry Equipment Corp. | Variable pressure reducing device |
| US5363874A (en) * | 1992-10-08 | 1994-11-15 | Sentry Equipment Corp. | Automated sample conditioning module |
-
2012
- 2012-10-12 WO PCT/IN2012/000679 patent/WO2013098835A2/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5363874A (en) * | 1992-10-08 | 1994-11-15 | Sentry Equipment Corp. | Automated sample conditioning module |
| US5333648A (en) * | 1992-10-13 | 1994-08-02 | Sentry Equipment Corp. | Variable pressure reducing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU171369U1 (en) * | 2016-01-26 | 2017-05-29 | Марат Асгатович Гимадиев | MECHATRONIC SYSTEM OF PREPARATION OF THE Sample of the HEAT CARRIER |
| CN111689475A (en) * | 2020-06-16 | 2020-09-22 | 聊城鲁西双氧水新材料科技有限公司 | Online cleaning method and device for blockage of instrument source taking point |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013098835A3 (en) | 2013-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5363874A (en) | Automated sample conditioning module | |
| EP2818776B1 (en) | Bypass valve | |
| ITTO20060177A1 (en) | HYDRAULIC DEVICE, HYDRAULIC EQUIPMENT, HYDRAULIC SYSTEM AND METHOD FOR ITS USE | |
| WO2013098835A2 (en) | A variable rod-in-tube pressure reducer with thermal and safety relief valve device | |
| CN207540762U (en) | A kind of filter element circulating resistance test device | |
| CN104482238B (en) | A kind of high-temperature molten salt conveying throttle valve | |
| US20160377187A1 (en) | Severe service valve | |
| US20160153571A1 (en) | Bypass valve | |
| CN109459097B (en) | Matrix distributed flow measuring device for online descaling and cold-hot state comparison | |
| EP3084545B1 (en) | Dynamic balancing valve for control of flow rate independently of pressure | |
| US4828767A (en) | Method and system for installing steam desuperheaters | |
| KR102362417B1 (en) | sample pressure reducing valve | |
| WO2017087850A1 (en) | Wireless control valve | |
| EP3627015A1 (en) | Method of operating a valve with a dynamic unit | |
| CN209927761U (en) | Online real-time detection device for hydrocarbon dew point of gas pipeline | |
| CN105807793A (en) | Dust removal pipeline dust gas flow adjustment system | |
| RU2804451C1 (en) | Dosing device for corrosion and hydrate inhibitor | |
| GB2376066A (en) | A commissioning module for a fluid distribution system | |
| WO2002017028A1 (en) | Method for detecting plug wear | |
| CN219263911U (en) | High-precision high-temperature lubricating device of bearing tester | |
| CN215982027U (en) | Safe explosion-proof gas-liquid pressure boost heating device | |
| CN220418928U (en) | Intelligent sampling and monitoring device for high-temperature steam | |
| CN202638091U (en) | Back washing type filter | |
| CN218269011U (en) | Auxiliary energy-saving monitoring management system for gas-fired boiler | |
| CN105548260A (en) | Warm air core testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12861967 Country of ref document: EP Kind code of ref document: A2 |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 12861967 Country of ref document: EP Kind code of ref document: A2 |