The temperature control system of a heat supply of buildings
(57) Abstract:The temperature controller is designed for automatic control of the temperature of the mixed (reverse) of water in the district heating systems of buildings. The technical result of the invention is to provide a simple, reliable and more affordable to the consumer regulator (Elevator). The temperature controller includes a housing with an inlet channel for supplying fluid from the forward and reverse lines of the heating system, the outlet in the form of a diffuser, located coaxially with the nozzle and throttle needle, bellows for the throttle needle and gauge thermosysteme. New technical solution is that the regulator is provided with a control channel and a valve associated with the outlet pressure of thermal system, and installed in the housing guide sleeve for accommodating therein with clearance of the throttle needle, provided with at least one longitudinal profiled groove. The needle is rigidly connected with the movable end of the bellows is placed in the hollow chamber, and a spring-loaded, and inside the throttle needle made channel that tells the inlet valve of a straight line with a hollow chamber, and the internal cavity of the bellows through the C control channel, blocked by control valve, is connected with the inner cavity of the channel inlet return water. The temperature controller is characterized by simple construction, has a low weight and performance and increased reliability. 1 Il. The invention relates to the field of automatic control and can be used in district heating systems.Known temperature controllers for heating systems in buildings (elevators) with bellows throttle needle, providing its axial movement and change in performance of the Elevator, see, e.g., auth. St. USSR N 1441366, CL G 05 D, 23/02, selected as a prototype.Know another device for controlling the flow of fluid, e.g., auth. St. N 1439547, CL G 05 D 23/00, with other method of changing the coolant flow rate. This device may be similar.The disadvantage of the prototype is that the amount of movement of the throttle needle is proportional to the amount of filler in the inner cavity of the bellows. This principle of construction regulator requires a long stroke of the bellows filled with a heat sensitive liquid that when the temperature reverse the Torah.In addition, the issue of protection of the bellows during overloads, when the needle will make its full stroke, block the saddle, and under the influence of any reason the temperature of the return fluid continues to increase. In this case, the heat-sensitive liquid within the bellows increases its volume, closes the bellows and incapacitate the entire Elevator.The technical result of the invention is to provide a simple, reliable and more affordable Elevator.The technical result is achieved in that the temperature control system of a heat supply of buildings in the form of an Elevator, comprising a housing with an inlet channel for supplying fluid from the supply and return pipe of the heating system, the outlet in the form of a diffuser, located coaxially with the nozzle and throttle needle, and bellows for the throttle needle and gauge thermosysteme, provided with a control channel and control valve associated with the outlet gauge system and installed in the housing guide sleeve for accommodating therein with clearance of the throttle needle, provided with at least one longitudinal profiled groove, spring and rigidly connected with podvijnymi of a straight line with a hollow chamber, moreover, the internal cavity of the bellows through the gap between the throttle needle and a guide sleeve connected to the input channel of a straight line, and via the control channel, blocked by control valve, is connected with the input channel of the return line.The figure presents a diagram of the proposed temperature controller heating buildings. It consists of a body 1 with an inlet 2 and 3 for supplying a coolant, respectively, of the forward and backward line of the outlet pipe 4 in the form of a diffuser, nozzle 5 and the throttle needle 6. The throttle needle, in turn, consists of a bellows 7, placed in the dead of the camera 8, which is rigidly connected with the rolling face with a butterfly needle, and the return spring 9. In case there is a guide sleeve 10 for placement in gap 11 of the throttle needle, provided with at least one longitudinal profiled groove 12. In the throttle needle 6 are channel 13, indicating the input channel 2 of a straight line with the chamber 8 and through the groove (or grooves) 12 input channel 2 is in communication with the internal cavity 14 of the bellows 7.The regulator is equipped with a control channel 15 and control valve 16 associated with the output pressure of thermal system. Through the return line. The actuator control valve 16 is carried out directly from the gauge of thermal system, which, in turn, from bulbs 17 and 18, the knob 19 and node 20 permutations of the control valve 16.Working temperature controller as follows.Hot water from a straight line heat through the channel 2 enters the chamber 21 of the regulator and then through the nozzle 5 is supplied to a mixing chamber 22 and then through the outlet 4 into the heating system.Under the action of ejecting the ability of the jet emerging from the nozzle 5, the mixing chamber 22 creates a zone of reduced pressure, allowing water from the reverse channel 3 sucked into the zone of suction and enjoys jet of hot water coming from the nozzle 5, the outlet 4 of the regulator, while mingling with her and lowering the temperature of the coolant at the output of the controller.The temperature of the mixed water is proportional to the amount of direct heat carrier flowing into the mixing chamber through the nozzle 5. The amount of fluid that passes through the nozzle 5, in turn, is determined by the position of the throttling needle 6 with respect to the input section of the nozzle.The pressure of the coolant guide sleeve 10 into the internal cavity 14 of the bellows 7. When closed, the control valve 16, the differential pressure on the bellows 7 is missing, because the inside of the bellows and on its outer surface will be the pressure is the same as in the chamber 21.Under the influence of return spring 9, the needle 6 is fully opens the flow area of the nozzle 5.When you open (normally closed) control valve 16, the working fluid from the internal cavity 14 of the bellows 7 through a control channel 15 enters the channel 3, in which pressure is less than the channel 2. The pressure of the working fluid inside the bellows 7 will decrease due to the throttling of the fluid flow gap 11.Under the influence of the prevailing pressure difference on the bellows 7, the latter is compressed, moving the throttling needle 6 and reducing the flow area of the nozzle 5.As previously noted, the outer surface of the throttle needle 6 is made of at least one longitudinal profile groove 12, the cross-sectional area which increases along its length. When fully open flow cross-section of the throttle nozzle needle 6 is in the initial position and the bellows 7 in the free state. This groove 12 on the needle 6 is located in the gap 11 to its smaller cross-section, and at a maximum during the needle and the negative feedback on the throttle needle 6 depending on the opening of the control valve 16.A specific opening of the control valve 16 corresponds to a certain throttle needle 6. If under any circumstances the throttle, the needle will move to a higher level, it will increase the area of the orifice groove, the total resistance of the gap 11 will decrease, leakage of the working fluid in the internal cavity 14 of the bellows exceeds its discharge from the internal cavity of the bellows via the control valve 16 in channel 3 return water. The pressure inside the bellows will increase the differential pressure on the outer and inner surface of bellows decreases, the return spring 9 moves the throttle needle opening.If under any circumstances the throttle, the needle will move to a smaller value, the hydraulic resistance of the gap 11 will be increased, draining the working fluid from the internal cavity 14 of the bellows exceeds the flow through the gap 11. The pressure inside the bellows will be reduced, the bellows will move the throttle needle closure, equating the cost of the working fluid through the gap 11 and the control valve 16.Thus, the bellows and the throttle needle is constantly "listening" for the position of the control valve.The operating expenses of the LM is odasi working through the nozzle 5 of the regulator. The management of such small expenses allows the use of low control actuator, for example, miniature custom gauge thermosysteme. The main bulb 17 of thermal system, depending on the destination, may be embedded in the output line of the controller or in the input channel 3 return water.The setting of thermal system to maintain the set temperature determined by the graph of heat release, is the node configuration-unit 19.In the proposed controller, the main bulb 17 is placed in the outlet port of the regulator and monitors the temperature change of the coolant at the outlet of the regulator. When the temperature of the coolant heat-sensitive liquid contained in the bulb 17, increasing its volume, opens the flow area of the control valve 16, which leads to cover the needle orifice of the nozzle 6.The bulb 18 is installed outside the heated building and reacts to changes in the outdoor temperature. Lowering the temperature of the outside air automatically opens the flow area of the nozzle 6 and increases the temperature of the coolant at the output of the controller.For lowering the temperature the e and holidays unit 19 can be used as a manual throttle needle 6, allows you to change the temperature of the coolant at the outlet of the regulator by a certain amount.To automate this process unit 19 can also be provided with a software device.Thus, the proposed controller allows you to automatically maintain the set temperature in heating systems with correction for ambient temperature, creating a comfortable temperature in the living space and prevents them from overheating, and also allows additional heat saving in administrative and production premises at the expense of lowering the temperature outside.Technical characteristics of the proposed controller does not yield a series of electronic regulators, such as electronics P-1M, but much easier and more reliable, which makes the regulator more cheap and available to consumers. The temperature control system of a heat supply of buildings in the form of an Elevator, comprising a housing with an inlet channel for supplying fluid from the forward and reverse lines of the heating system, the outlet in the form of a diffuser, located coaxially with the nozzle and throttle needle, and the bellows is cash and the controlling valve, associated with the output pressure of thermal system, and installed in the housing guide sleeve for accommodating therein with clearance of the throttle needle, equipped with not less than one longitudinal profiled groove, spring and rigidly connected to a movable end of the bellows is placed in the hollow chamber and the inside of the throttle needle made channel, indicating the input channel of a straight line with a hollow chamber, and the internal cavity of the bellows through the gap between the throttle needle and a guide sleeve connected to the input channel of a straight line, and via the control channel, blocked by control valve, is connected with the input channel of the coolant from the return line.
FIELD: electrical and radio engineering; overtemperature protection of electric motors, domestic appliances, and other electrical apparatuses.
SUBSTANCE: proposed thermal relay has insulating case, fixed and movable contact holders, heat-sensing part made of material possessing shape memory effect, pusher, locking screw, and adjusting post. One of ends of heat-sensing part is attached to case and is bent in two points, ratio of bend radii being R1/R2 = 1/3; other end is attached to adjustment post mounted in case for displacement.
EFFECT: simplified design, enhanced system stiffness, facilitated setting control, enhanced reliability of relay.
1 cl, 2 dwg
FIELD: tool-making industry, in particular, direct action temperature controllers, possible use for automatic air temperature control in rooms fitted out with heating devices.
SUBSTANCE: temperature controller contains temperature sensor, mounted in a case, connected through a rod to a valve installed in heat carrier feeding pipeline and containing return spring, valve control unit, provided with two bushings, mounted coaxially and concentrically to the rod, inside bushings return spring is mounted together with supporting washer fastened on the rod. Temperature sensor case is connected to heat carrier feeding pipeline through replaceable layer. Valve holding device is mounted on the end of the rod, above the pass aperture of heat carrier pipeline wall. Locking device of the valve is made in form of bushing, supporting washer, packing layer and screw spring. Supporting washer and packing layer are rigidly held on external side of the bushing, and screw spring is held by one end in internal hollow of the bushing, while its outer end is held on the end of the rod.
EFFECT: decreased hydraulic resistance coefficient of the controller.
SUBSTANCE: return temperature limiter (1) is provided with flowing channel in the main direction (4) and heat-sensitive throttling valve (2). The said throttling valve is spring-loaded (12). The spring is enclosed into a shell with walls having, at least, one clearance (17) between spring coils (16). The size of the said clearance can change. The above mentioned spring is a compression spring (12) and included into a limiter housing (5) together with heat-sensitive element (14). The compression spring (12) presses the heat-sensitive element (14) to thrust face (8) of limiter housing (5).
EFFECT: simple design of return temperature limiter.
11 cl, 3 dwg
FIELD: instrument making.
SUBSTANCE: invention relates to temperature control device incorporating valve, temperature control element and protective element. Aforesaid temperature control element is furnished with a fastener to get fastened to/unfastened from aforesaid valve. Note that aforesaid protective element seats on the fastener outer surface to restrict access to the fastener, thus preventing temperature control element unfastening from the valve. Aforesaid protective element comprises a locking element to engage the temperature control element and/or valve in order to prevent rotation of protective element relative to temperature control element and/or valve.
EFFECT: perfected design of protective element.
11 cl, 6 dwg
FIELD: physics; control.
SUBSTANCE: invention relates to devices for controlling and automatic regulation of temperature and is meant for use in temperature regulation systems in buildings with forced circulation water heating. The control element used in the temperature regulator for the building heating system is a cylindrical cup placed in a mixing chamber with possibility of longitudinal displacement with a minimal gap between its outer lateral surface and the inner surface of the mixing chamber which is rigidly attached to the rod of the liquid thermomechanical converter (LTMC). On opposite lateral surfaces of the cup there are through-cuts which lie in such a way that during longitudinal displacement of the cup with complete covering of the opening of the inlet pipe for connecting to the heating system, the opening of the inlet pipe for return water is completely open and vise versa. The liquid thermomechanical converter used is a converter with a rigid body consisting of a cylindrical hollow casing with an end cap inside of which there is a gasket through which passes the rod of the liquid thermomechanical converter with a head in form of a disc. The diametre of the rod is considerably less than the inner diametre of the housing of the liquid thermomechanical converter, which provides the required sensitivity of the liquid thermomechanical converter. Between the end cap of the liquid thermomechanical converter and the heat insulating bushing of a partition there is a spring which presses the bottom of the liquid thermomechanical converter to an adjustment screw fitted in the end wall of the temperature control chamber.
EFFECT: increased efficiency and wider range of controlling the water temperature regulator in a heating system with increased reliability of the regulator and simplification of its design.
3 cl, 1 dwg
SUBSTANCE: in temperature control of building heating system, as temperature sensing element there used is liquid thermomechanical converter (LTC) with rigid housing, which consists of cylindrical hollow housing with a plug, and with a packing arranged in it, through which LTC stock moves, on inner end of which there is disc head which serves as a stop for LTC spring serving for easing backward movement of the stock at decrease of temperature of thermometric liquid with which the tight cavity of LTC is fully filled. At that, diametre of stock is considerably smaller than inner diametre of LTC housing, and between LTC plug and heat insulated bushing of partition there installed is spring pressing LTC bottom to adjustment screw installed in end wall of thermostatting chamber and serving for installation of thermostatting temperature of return water.
EFFECT: increasing efficiency and enlarging the control range of water temperature control in heating system at improving the reliability of control and simplifying its construction.
2 cl, 1 dwg
FIELD: power industry.
SUBSTANCE: temperature control device for service water heated by means of heat medium, namely by means of water of central heating station in heat exchanger, with service water gate regulating the service water flow to heat exchanger and with heat medium gate regulating the heat medium flow from heat exchanger. Service water gate includes service water valve seat and cylindrical or conical element of service water valve gate, which is movable relative to it, and heat medium gate includes heat medium valve seat and cylindrical or conical element of heat medium valve gate, which is movable relative to it. Service water gate and heat medium gate interact with each other by means of gate pin; at that, control adjusted as to pressure is provided, which acts depending on service water intake to the gate pin and as a result to service water gate, or adjusting or opening or closing one, and besides, known thermostatically controlled regulator is provided, which acts only on heat medium gate, mainly directly on the element of heat medium valve gate, or regulating it depending on service water temperature, namely measured with temperature sensor after service water leaves the heat exchanger. Element of heat medium valve gate is located in or on gate pin in movable way or with possibility of being moved or detached relative to longitudinal axis of gate pin, and service water gate is connected to gate pin firmly and rigidly. Heating element with the above mentioned device is also described.
EFFECT: simplifying and improving operating reliability, and implementing the independent temperature control.
26 cl, 5 dwg
SUBSTANCE: device has a temperature-dependent control element (15, 16), a driving element (13) and an actuator (23) which affects adjustment characteristics of the control element (15, 16), wherein said actuator (23) affects adjustment characteristics of the control element (15, 16) through an elastic coupling (26). The invention proposes to fit the actuator (23) with a spring mechanism, an electric motor, a force transducer, an electronic control unit and a digital display.
EFFECT: design of a thermostatic valve actuator which is universal in use and control.
13 cl, 3 dwg
SUBSTANCE: temperature regulator having a circular dial comprises: a selector which is electrically connected to the front side of a printed-circuit board module; a selector hand which is combined with the selector to turn the selector and has a protrusion on one side for differentiating temperature ranges; a housing which houses the printed-circuit board module and the selector; a display panel having holes at different points into which the protrusion enters, said holes corresponding to the protrusion for each temperature range set by turning the selector hand, and marked by temperature graduations corresponding to temperature ranges selected by the selector; a circular dial which can be easily installed detachably on the switch of the temperature regulator which is electrically connected to the front part of the printed-circuit module to set temperature within the temperature range selected by the selector; and a microcomputer which is programmed to convert a temperature signal corresponding to the turning angle of the circular dial into a temperature signal calculated in proportion to the temperature range selected on the selector and recognising the converted signal.
EFFECT: possibility of accurate measurement of temperature ranges of the regulator.
2 cl, 8 dwg
SUBSTANCE: thermostatic safety valve has a housing (12) having an inlet opening (14) and an outlet opening (16), a passage opening (17) which connects the inlet opening (14) and the outlet opening (16) for allowing mass flow. There is valve seat (18) in the passage opening (17), which can be closed by a valve element (19). At least one actuating element (31) acts between the valve element (19) or valve seat (18) and the housing (12), the actuating element (31) being configured to self-lock in two defined end positions (32, 37). In one end position (32), the valve element (19) or valve seat (18) is fixed an open position (34) with respect to the valve seat (18) or valve element (19), and in the other end position (37), the valve element (19) or valve seat (18) is fixed in a closed position (36) with respect to the valve seat (18) or valve element (19). The valve element (19) or the valve seat (18) is in contact with an actuating member (28) which, depending on temperature of the mass flow, generates at least one switching movement of the valve element (19) or valve seat (18) and moves the valve element (19) into the first end position (32) or the second end position (37).
EFFECT: design of a thermostatic valve for controlling mass flow, which is in form of a safety valve and indicates faults, for example, exceeding a given operating temperature.
21 cl, 14 dwg