SU972183A1

SU972183A1 - Thermal valve

Info

Publication number: SU972183A1
Application number: SU813288402A
Authority: SU
Inventors: Вячеслав Михайлович Мурашко; Виктор Иванович Савенко; Андрей Андреевич Чижов; Александр Иванович Шабанов
Original assignee: Предприятие П/Я Р-6219
Priority date: 1981-05-18
Filing date: 1981-05-18
Publication date: 1982-11-07

Description

1one

Изобретение относитс к пневмогидротехнике и может быть использовано дл дистанционного открыти и перекрыти гидравлических и газовых магистралей.The invention relates to a pneumohydraulic technique and can be used to remotely open and close hydraulic and gas lines.

Известен термоклапан, в корпусе которого установлены шток, св занный с запорным органом, и нагреватель, причем корпус и шток выполнены из материалов с различными коэффициентами линейного расширени I .A thermal valve is known, in the body of which a stem connected to the shut-off member and a heater are installed, the housing and the stem being made of materials with different coefficients of linear expansion I.

Недостатками указанного устройства вл ютс невысокие надежность и быстродействие за счет того, что врем закрыти клапана не может регулироватьс , точность и посто нство времени закрыти зависит от посто нства внешних и внутренних факторов , кроме того, имеетс опасность самопроизвольного открыти клапана при случайном равномерном прогреве клапана.The disadvantages of this device are low reliability and speed due to the fact that the valve closure time cannot be adjusted, the accuracy and constancy of the closure time depends on the constancy of external and internal factors, in addition, there is a danger of the valve spontaneous opening if the valve is uniformly randomly heated.

Известен термоклапан, содержаший корпус с входным и выходным патрубками, в котором установлен нагруженный упруги.м элементом запорный орган, кинематически св занный со штоком, снабженным нагревательным элементом 2 .A thermal valve is known that contains a housing with inlet and outlet nozzles, in which a locking member loaded with an elastic element is installed, which is kinematically connected to a rod equipped with a heating element 2.

(54) ТЕРМОКЛАПАН(54) THERMAL VALVE

Недостатками известного клапана вл ютс невысокие надежность и быстродействие .The disadvantages of the known valve are low reliability and speed.

Цель изобретени - повышение надежности и быстродействи клапана. 5Поставленна цель достигаетс тем, чтоThe purpose of the invention is to increase the reliability and speed of the valve. 5 The goal is achieved by the fact that

корпус снабжен дополнительным нагревательным элементом, причем между штоком и корпусом размещен тепловой экран. Корпус и шток выполнены из материалов с одинаковым коэффициентом линейного расширени . На чертеже показан термоклапан, разрез.the case is provided with an additional heating element, with a heat shield placed between the rod and the case. The body and stem are made of materials with the same linear expansion coefficient. The drawing shows a thermal valve section.

В корпусе 1 установлен нагруженный упругим эле.ментом 2 запорный орган 3, и шток 4, снабженный нагревательным элементом 5. Снаружи корпуса размешен дополнительный нагревательный элемент 6, а между штоком 4 и корпусом 1 установлена теплоизол ци в виде теплового экрана 7. Попадание рабочего тела в зазор междуIn case 1, a locking member 3 is loaded with elastic element 2, and a stem 4 equipped with a heating element 5. An additional heating element 6 is placed outside the case, and heat insulation in the form of a heat shield 7 is installed between the rod 4 and case 1. in the gap between

Claims

20, the stem and housing are prevented with the aid of the membrane 8. So that the temperature regime is provided by the radiator 9. The thermal valve works as follows. When the heater 5 is turned on, the stem 4, heated, expands and mixes, the shut-off member 3, the valve opens. The presence of a heat shield 7 does not allow the body 1 to warm up and heat is released through the radiator 9. If the valve is closed, the heater 6 is turned on, which heats the body 1, the latter in turn expands, displaces the stem, which in turn releases the locking member and the valve closes. By increasing the capacity of the body heater, the valve closure time can be shortened. At a given heater power and valve cross-section (and, consequently, a given stroke), the valve speed is determined by the coefficients of thermal expansion of the body and the stem. In this design, it is possible to manufacture both the housing and the stem from materials with the highest possible thermal expansion coefficients independently of one another, thereby obtaining the maximum speed. Such a thermal valve design improves the reliability and speed of the valve. A thermal valve comprising a housing with inlet and outlet connections, in which a locking member loaded with an elastic element is installed, kinematically connected with a rod equipped with a heating element, characterized by the fact that, in order to increase reliability, the housing is equipped with an additional heating element between the rod and the housing is placed a heat shield. Sources of information taken into account during the examination 1. USSR author's certificate No. 703717, cl. F 16 K 31/00, 1978.

2. USSR author's certificate number 777310, cl. F 16 K 31/02, 1978.