US3825060A - System for filling and emptying of heat exchangers - Google Patents

System for filling and emptying of heat exchangers Download PDF

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Publication number
US3825060A
US3825060A US00303166A US30316672A US3825060A US 3825060 A US3825060 A US 3825060A US 00303166 A US00303166 A US 00303166A US 30316672 A US30316672 A US 30316672A US 3825060 A US3825060 A US 3825060A
Authority
US
United States
Prior art keywords
conduit
heat exchangers
filling
supply conduit
emptying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00303166A
Other languages
English (en)
Inventor
L Heller
L Forgo
M Horvath
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Transelektro Magyar Villamossagi Kulkereskedelmi
Original Assignee
Transelektro Magyar Villamossagi Kulkereskedelmi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Transelektro Magyar Villamossagi Kulkereskedelmi filed Critical Transelektro Magyar Villamossagi Kulkereskedelmi
Application granted granted Critical
Publication of US3825060A publication Critical patent/US3825060A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
    • F28B9/06—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid with provision for re-cooling the cooling water or other cooling liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/06—Safety or protection arrangements; Arrangements for preventing malfunction by using means for draining heat exchange media from heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/18—Safety or protection arrangements; Arrangements for preventing malfunction for removing contaminants, e.g. for degassing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7869—Biased open
    • Y10T137/7871—Weight biased
    • Y10T137/7874—Edge pivoted valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7869—Biased open
    • Y10T137/7875—Pivoted valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7898—Pivoted valves
    • Y10T137/7903—Weight biased

Definitions

  • the communication conduit has an oblique position inclined towards the supply conduit so that the regulating flap in it will be closed only in normal operation of the system where the flap of the device is pressed down on its seat by the overpressure prevailing in the supply conduit with respect to the v reflux conduit.
  • the advantage oi the arrangement consists in that the heat exchangers can be filled up in the reverse direction and emptied through a drain conduit quickly and simultaneous deareating and air introduction,
  • the heat exchangers ought to be filled up with water slowly. With slow filling up, however, the water introduced into the cold heat exchangersmay freeze in in the tubes or in a part thereof duringsuch filling. Therefore, in cold weather, filling up has to be carried out quickly and with ensuring a perfect deaeration.
  • Such displaced air may withdraw through air escape valves provided on top the heat exchangers and no air will be trapped in the return flows or branches thereof which might cause 'opertional troubles and deteriorate the heat transmission capacity or cause the cooling water to freeze in individual tubes and destroy the heat exchanger in cold weather.
  • air bubbles are trapped in the forward branch or flow of the heat exchanger, they will be carried towards the air escape valves once normal-water flow sets in.
  • an air bubble in the return branch or flow would try to approach the air escape valve by flowing in a direction whichis opposite to the direction of normal flow and would be prevented from such upward displacement by the downwardly directed normal flow of the cooling medium. The result is that the air bubble stays 'at theplace where it has been trapped and forms an air plugwhich stops the water flow in the respective tube.
  • the main object of the present invention is to obviate the aforesaid difficulties without abandoning the principle of reverse. filling up which may be carried out quickly and without temperature strains caused by operational delays.
  • the system for filling up and emptying heat exchangers of the multiflow type comprises, in combination, a heatexchanger with an inlet-and an outlet for a cooling liquid, associated each with another flow of the heat exchanger, a supply conduit connected to said inlet, a return conduit connected to said outlet, and a drain conduit branching off said supply conduit; shut-off means being provided in'each of said supply conduit, return to the accompanying drawings which show, by way of 7 example, various embodiments of the system according to the invention and in which:
  • FIGS. 3 and 4 are connection diagrams of further exemplified embodiments of the system according to the invention. t
  • FIG, 1 shown a system comprising a series of heat exchangers 8 connected in parallel between a supply conduit or distributing line 6 and a return conduit or collecting line 7.
  • a drain conduit 17 branches off the supply conduit 6. All three conduits 6, 7 and 17 are'provided with shut off means such as valves 1, 2 and 3,'respectively.
  • Reference numeral refers to automatic air escape valves on top the heat ex changers 8.
  • a communication conduit 9 is providedbetween the supply conduit 6 and the return conduit 7 which comprises a regulating flap 4 arranged for permitting a flow from the return conduit 7 into the supply conduit 6 whereas a flow in the opposite direction is prevented thereby.
  • the regulating flap '4 is disposed in an oblique portion of the communication conduit inclined toward the supply conduit 6 as shown in FlGJl.
  • a cooler liquid such as cooling water is admitted through the open shut off valve 1 into the supply conduit 6. After having traversed the heat exchangers 8 the cooling water withdraws through the return conduit 7 and the open shut off valve 2 is indicated by arrows.
  • the regulating flap 4 in the communication conduit 9 is closed so that no cooling water will flow from the return conduit 7 into the supply conduit 6 through the communication conduit 9 which would mean a short-circuiting of the system.
  • shutoff valves 1 and 2 are closed and the shut off valve 3 is opened. Then, the cooler liquid will be drained from the heat exchangers 8 through both the supply conduit 6 and the return conduit 7 as well as the communication conduit 9 and the drain conduit 17. Ambient air is automatically permitted to enter the heat exchangers 8 through the air escape valves 5 so as to prevent the generation of vacuum in the system and, thereby, to prevent the water from flowing out of the heat exchangers 8.
  • shut off valve 3 in the drain conduit 17 is closed while the shut off valve 2 in the return conduit 7 is opened with the shut off valve 1 in the supply conduit 6 left closed. Then, warm cooling water will enter the exit sides or flows (banks of tubes) of the heat exchangers 8 through the return conduit 7 pushing the air in front of them out of the heat exchangers 8 through the air escape valves 5 into the ambiency.
  • the system is provided with a time pattern control means such as program control unit 12 which is operatively connected to the shut off valves 1, 2 and 3 by means'of actuators 13, '14 and 15, respectively, as suggested by dotted lines in the drawing.
  • Thepr ogram control unit 12 ensures an automatic operation of the system in such amanner that after the shut off valve 3 being closed, first the actuator 13 of shut off valve 2 is given an opening impulse whereafter with a certain delay obtained e.g., by means of a time relay the actuator 14 of shut off valve 1 is operated so .that the'above described sequence of valve operation is obtained automatically.
  • the represented embodiments have been provided with automatic air escape valves.
  • stand pipes connected to individual conduits or to a common conduit might be arranged on top the heat exchangers.
  • the time period of opening of the shut off valve 1 may be selected optionally and has not to beadapted to filling conditions.
  • Filled up condition of the heat exchangers may be ascertained by relatively simple means suchas swimmers which operate switches. Moreover, in case of automatic control, impulses given by such swimmer operated switches may be used for triggering the opening procedure of shut off valve 1.
  • the system according to the invention permits a reliable deaeration even if individual heat exchangers or groups thereof are started in sequence- I
  • the amount of the cooler liquid traversing already started heat exchangers will not be altered by the amount of cooler liquid used for and by the speed of filling up.
  • the communication conduit 9 comprising the regulating flap 4 is connected to the deepest point of the return conduit 7 and is disposed at an inclined position with respect to the supply conduit 6 so that the valve disk 10 normally does not engage its seat 11 as has been explained above. Therefore, the regulating flap 4 does not require any pressure difference for being opened and for the cooler liquid being entirely drained off the return conduit 7.
  • the inclination of the regulating flap 4 is selected so that the pressure difference appearing in normal operation of the system and caused mainly by the flow resistance in the heat exchangers will keep the regulating flap 4 in its closed position.
  • the system according to the invention has the advantage that only three shut off means rather than four have to be operated manually or distance controlled.
  • a supply conduit connected to said inlet, a return conduit connected to said outlet, a drain conduit branching'off said supply conduit, shut off means in each of said supply conduit, return conduit and drain conduit, a communication conduit connecting said supply conduit with said return conduit, and a regulating flap in said communication conduit arranged for permitting a flow from said return conduit into said supply conduit, and to prevent a flow in the opposite direction.
  • a time pattern control means comprising a feeler for triggering the opening of the shut off means in said supply conduit, said feeler being arranged for yielding a triggering impulse upon said heat exchangers being filled up with cooler liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Check Valves (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
US00303166A 1971-11-05 1972-11-02 System for filling and emptying of heat exchangers Expired - Lifetime US3825060A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUEE1969A HU165035B (fr) 1971-11-05 1971-11-05

Publications (1)

Publication Number Publication Date
US3825060A true US3825060A (en) 1974-07-23

Family

ID=10995401

Family Applications (1)

Application Number Title Priority Date Filing Date
US00303166A Expired - Lifetime US3825060A (en) 1971-11-05 1972-11-02 System for filling and emptying of heat exchangers

Country Status (14)

Country Link
US (1) US3825060A (fr)
JP (1) JPS5544878B2 (fr)
AT (1) AT317946B (fr)
AU (1) AU462324B2 (fr)
CA (1) CA968340A (fr)
CH (1) CH549770A (fr)
DE (1) DE2253339C3 (fr)
FI (1) FI55257C (fr)
FR (1) FR2158538B1 (fr)
GB (1) GB1390529A (fr)
HU (1) HU165035B (fr)
IT (1) IT972253B (fr)
SE (1) SE394742B (fr)
SU (1) SU543361A3 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962999A (en) * 1974-09-09 1976-06-15 Aqua-Chem, Inc. Heat transfer fluid heater with continuously flushed vent and drain
US4129180A (en) * 1976-12-06 1978-12-12 Hudson Products Corporation Vapor condensing apparatus
US4649019A (en) * 1983-09-29 1987-03-10 Jawor John C Draining down of a nuclear steam generating system
US4653577A (en) * 1986-01-23 1987-03-31 Shiley, Inc. Unitary heat exchanger and debubbler for a liquid
WO1988002093A1 (fr) * 1986-09-08 1988-03-24 Cmi Corporation Appareil de chauffage et/ou sechage
US5000908A (en) * 1989-10-02 1991-03-19 Tennessee Valley Authority Pulsed high-pressure (PHP) drain-down of steam generating system
US5426941A (en) * 1994-04-18 1995-06-27 Lewis; Stan Vapor condensation and liquid recovery system
US5548958A (en) * 1995-04-13 1996-08-27 Lewis; W. Stan Waste heat recovery system
US5609571A (en) * 1995-01-26 1997-03-11 Sorin Biomedical Inc. Apparatus and method of cardioplegia delivery
US5643191A (en) * 1995-01-26 1997-07-01 Sorin Biomedical Inc. Cardioplegia delivery system and method for converting from warm cardioplegia to cold cardioplegia
US5702358A (en) * 1995-02-23 1997-12-30 Sorin Biomedical Inc. Cardioplegia delivery apparatus and method of use
CN103256826A (zh) * 2013-04-28 2013-08-21 陈银轩 一种用于冷凝装置的水箱温控机构
US20140138051A1 (en) * 2012-11-19 2014-05-22 Robert Cooney Expansion Relief Header for Protecting Heat Transfer Coils in HVAC Systems
US20220136776A1 (en) * 2019-04-18 2022-05-05 Guntner GMBH & co. KG Heat exchanger assembly having at least one multi-pass heat exchanger and method for operating a heat exchanger assembly

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1200592B (it) * 1985-02-22 1989-01-27 Erba Strumentazione Metodo e dispositivo per regolare la temperatura di raffreddamento di una trappola per campioni in un'apparecchiatura di analisi gascromatografica
HU193135B (en) * 1985-10-24 1987-08-28 Energiagazdalkodasi Intezet Auxiliary plant for operating air-cooled equipments particularly preventing winter injuries and air-cooled cooling tower provided with such auxiliary plant
DE202019103830U1 (de) 2019-07-11 2019-11-13 Seifert Systems Ltd. Anordnung zum Betreiben mehrerer parallel verschalteter Luft-Flüssigkeits-Wärmetauschereinheiten
JP7384782B2 (ja) * 2020-12-28 2023-11-21 株式会社神戸製鋼所 積層型流体加温器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1140417A (fr) * 1954-12-22 1957-07-22 Licencia Talalmanyokat Dispositif pour le remplissage et la vidange de condenseurs refroidis par l'air
GB1020448A (en) * 1962-04-19 1966-02-16 English Electric Co Ltd Steam power plants
GB1074550A (en) * 1964-09-04 1967-07-05 English Electric Co Ltd Water storage systems for closed steam turbine condensate cooling systems

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962999A (en) * 1974-09-09 1976-06-15 Aqua-Chem, Inc. Heat transfer fluid heater with continuously flushed vent and drain
US4129180A (en) * 1976-12-06 1978-12-12 Hudson Products Corporation Vapor condensing apparatus
US4649019A (en) * 1983-09-29 1987-03-10 Jawor John C Draining down of a nuclear steam generating system
US4653577A (en) * 1986-01-23 1987-03-31 Shiley, Inc. Unitary heat exchanger and debubbler for a liquid
WO1988002093A1 (fr) * 1986-09-08 1988-03-24 Cmi Corporation Appareil de chauffage et/ou sechage
US5000908A (en) * 1989-10-02 1991-03-19 Tennessee Valley Authority Pulsed high-pressure (PHP) drain-down of steam generating system
US5426941A (en) * 1994-04-18 1995-06-27 Lewis; Stan Vapor condensation and liquid recovery system
US5609571A (en) * 1995-01-26 1997-03-11 Sorin Biomedical Inc. Apparatus and method of cardioplegia delivery
US5643191A (en) * 1995-01-26 1997-07-01 Sorin Biomedical Inc. Cardioplegia delivery system and method for converting from warm cardioplegia to cold cardioplegia
US5702358A (en) * 1995-02-23 1997-12-30 Sorin Biomedical Inc. Cardioplegia delivery apparatus and method of use
US5548958A (en) * 1995-04-13 1996-08-27 Lewis; W. Stan Waste heat recovery system
US20140138051A1 (en) * 2012-11-19 2014-05-22 Robert Cooney Expansion Relief Header for Protecting Heat Transfer Coils in HVAC Systems
US20150144322A1 (en) * 2012-11-19 2015-05-28 Robert Cooney Method for controlling an expansion relief header for protecting heat transfer coils in hvac systems
US9448018B2 (en) * 2012-11-19 2016-09-20 Robert Cooney Expansion relief header for protecting heat transfer coils in HVAC systems
US9541338B2 (en) * 2012-11-19 2017-01-10 Robert Cooney Method for controlling an expansion relief header for protecting heat transfer coils in HVAC systems
CN103256826A (zh) * 2013-04-28 2013-08-21 陈银轩 一种用于冷凝装置的水箱温控机构
US20220136776A1 (en) * 2019-04-18 2022-05-05 Guntner GMBH & co. KG Heat exchanger assembly having at least one multi-pass heat exchanger and method for operating a heat exchanger assembly
US20220205724A1 (en) * 2019-04-18 2022-06-30 Guntner GMBH & co. KG Heat exchanger assembly having at least one multi-pass heat exchanger and method for operating a heat exchanger assembly
US11976883B2 (en) * 2019-04-18 2024-05-07 Gunter Gmbh & Co. Kg Heat exchanger assembly having at least one multi-pass heat exchanger and method for operating a heat exchanger assembly

Also Published As

Publication number Publication date
HU165035B (fr) 1974-06-28
FI55257C (fi) 1979-06-11
CA968340A (en) 1975-05-27
DE2253339B2 (de) 1980-05-29
AU4842572A (en) 1974-05-02
SU543361A3 (ru) 1977-01-15
FI55257B (fi) 1979-02-28
GB1390529A (en) 1975-04-16
FR2158538B1 (fr) 1976-10-29
CH549770A (de) 1974-05-31
JPS4854543A (fr) 1973-07-31
DE2253339A1 (de) 1973-05-10
SE394742B (sv) 1977-07-04
FR2158538A1 (fr) 1973-06-15
AT317946B (de) 1974-09-25
IT972253B (it) 1974-05-20
AU462324B2 (en) 1975-06-19
JPS5544878B2 (fr) 1980-11-14
DE2253339C3 (de) 1981-02-12

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