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1. (WO2001001104) IMPROVED STREAM SWITCHING SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/001104 International Application No.: PCT/US2000/015833
Publication Date: 04.01.2001 International Filing Date: 09.06.2000
Chapter 2 Demand Filed: 15.01.2001
IPC:
F16K 27/00 (2006.01) ,G01N 1/00 (2006.01) ,G01N 1/22 (2006.01) ,G01N 1/26 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
27
Construction of housings; Use of materials therefor
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1
Sampling; Preparing specimens for investigation
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1
Sampling; Preparing specimens for investigation
02
Devices for withdrawing samples
22
in the gaseous state
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1
Sampling; Preparing specimens for investigation
02
Devices for withdrawing samples
22
in the gaseous state
26
with provision for intake from several spaces
Applicants:
DANIEL INDUSTRIES, INC. [US/US]; 9753 Pine Lake Drive Houston, TXS 77055, US
Inventors:
XU, Yang; US
LECHNER-FISH, Teresa; US
Agent:
GRAY, Robert; Conley, Rose & Tayon, P.C. P.O. Box 3267 Houston, TX 77253-3267, US
MARKS & CLERK; Sussex House 83-85 Mosley Street Manchester M2 3LG, GB
Priority Data:
09/538,45530.03.2000US
60/141,35728.06.1999US
Title (EN) IMPROVED STREAM SWITCHING SYSTEM
(FR) SYSTEME AMELIORE DE COMMUTATION DE FLUX
Abstract:
(EN) An improved double block and double bleed stream switching system (modifiable to, for example, a double block, single bleed stream switching system) includes a common stream path for a multitude of gas streams from, for example, a process pipeline. The improved stream switching system (700) includes a heating mechanism and insulation oven to help temperature stabilization, along with a structure to separate temperature sensitive solenoids (750-757) from the heated area. Pre-heat coils (760, 761) are located between the sample switching system and the sample shut off system to warm the gas sample and to act as a flow restrictor. A first embodiment is suited for the Division 1 environment and a second embodiment is suited for Division 2 uses. The improved stream switching system may also feature membrane or cartridge filters located upstream of the sample wetted portion of the stream switching system.
(FR) Un système amélioré de commutation de flux à double bloc et double purge (pouvant être modifié, par exemple en un système de commutation de flux à double bloc et simple purge) comprend un chemin de flux commun pour une multitude de flux de gaz provenant, par exemple, d'un pipeline de traitement. Le système amélioré (700) de commutation de flux comprend un mécanisme de chauffage et un four d'isolement aidant à stabiliser la température, ainsi qu'une structure destinée à séparer les solénoïdes thermosensibles (750-757) de la zone chauffée. Des bobines de préchauffage (760, 761) sont situées entre le système de commutation d'échantillon et le système de coupure d'échantillon pour chauffer l'échantillon de gaz et faire office de restricteur de débit. Un premier mode de réalisation est adapté à l'environnement de la division 1 et un second mode de réalisation est adapté aux utilisations de la division 2. Le système amélioré de commutation de flux peut également comprendre des filtres à membrane ou à cartouche situés en amont de la partie humidifiée par l'échantillon du système de commutation de flux.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)