CN114673826A - Valve and heating system - Google Patents

Abstract

The embodiment of the application discloses valve and heating system. The valve comprises a valve body, a valve component, a pressure regulating component and a temperature sensing component; the valve body is provided with a first cavity and a second cavity, the valve body is provided with a fluid inlet, a fluid outlet and a pressure stabilizing port, the fluid inlet and the fluid outlet are communicated with the first cavity, the pressure stabilizing port is communicated with the second cavity, the pressure stabilizing port is communicated with the fluid outlet, and the valve assembly is arranged in the first cavity; the pressure regulating assembly is arranged in the second chamber and is configured to regulate the opening degree of the valve assembly at the fluid outlet according to the fluid pressure in the second chamber; the temperature sensing assembly is connected between the pressure regulating assembly and the valve assembly and is configured to regulate the opening degree of the valve assembly at the fluid outlet according to the temperature of the fluid in the valve body. This application can adjust the fluid parameter of the fluid exit of valve, has good control effect.

Description

Valve and heating system

Technical Field

The application relates to the technical field of heating and ventilation equipment, in particular to a valve and a heating system.

Background

Central heating is one of the main modes of heating in winter in modern cities. A plurality of valves are arranged on a heat supply pipeline of the heat supply system, so that opening and closing control, flow direction control or parameter adjustment of fluid in the heat supply pipeline are realized.

In the related art, a ball valve is generally used as a valve for controlling the heat supply amount. The ball valve comprises a valve body and a spherical valve core, wherein a liquid inlet and a liquid outlet are symmetrically arranged on two sides of the central line of the valve body, the valve core is installed in the valve body, and a through hole which is vertical to the central line direction of the valve body is formed in the valve core. When the ball valve is used, the valve core is controlled to rotate around the central line of the valve body, so that the through hole is communicated between the liquid inlet and the liquid outlet to open the ball valve, or the valve core is blocked between the liquid inlet and the liquid outlet to close the ball valve; and the fluid flow at the liquid outlet is adjusted by controlling the rotation angle of the valve core around the central line of the valve body, so that the heat supply amount of the fluid is adjusted.

However, the control effect of the ball valve in the above technical solution is not good.

Disclosure of Invention

In view of the above problems, the present application provides a valve and a heating system, which can adjust a fluid parameter at a fluid outlet of the valve, and have a good control effect.

In order to achieve the above purpose, the present application provides the following technical solutions:

a first aspect of an embodiment of the present application provides a valve, which is applied to a heating system, and includes a valve body, a valve component, a pressure regulating component, and a temperature sensing component;

the valve body is provided with a first cavity and a second cavity, the valve body is provided with a fluid inlet, a fluid outlet and a pressure stabilizing port, the fluid inlet and the fluid outlet are communicated with the first cavity, the pressure stabilizing port is communicated with the second cavity, the pressure stabilizing port is communicated with the fluid outlet, and the valve assembly is arranged in the first cavity;

the pressure regulating assembly is arranged in the second chamber and is configured to regulate the opening degree of the valve assembly at the fluid outlet according to the fluid pressure in the second chamber;

the temperature sensing assembly is connected between the pressure regulating assembly and the valve assembly and is configured to regulate the opening degree of the valve assembly at the fluid outlet according to the temperature of the fluid in the valve body.

In one possible embodiment, the valve body has a chamber with a partition disposed therein, the partition dividing the chamber into the first chamber and the second chamber.

In an implementation mode, the pressure regulating assembly comprises a first baffle plate, a second baffle plate and an elastic piece, and the pressure stabilizing port is located on a cavity wall surface of the second cavity on the side close to the baffle plate;

the first baffle and the second baffle are positioned on two opposite sides of the pressure stabilizing port, and the first baffle is positioned on one side of the second baffle close to the baffle;

the peripheral surface of the first baffle and the peripheral surface of the second baffle are attached to the wall surface of the cavity of the second cavity, and the elastic piece is connected between the first baffle and the second baffle.

In an implementation manner, the valve body is provided with an exhaust hole, and the exhaust hole is communicated with the second cavity on the side of the first baffle far away from the second baffle.

In an implementation mode, the device further comprises a power assembly, wherein the power assembly is connected to the second baffle plate and drives the second baffle plate to reciprocate close to or far away from the first chamber.

In one implementation, the system further comprises a controller,

the controller is electrically connected with the power assembly;

and/or the fluid outlet is provided with a flow sensor electrically connected with the controller;

and/or the fluid outlet is provided with a temperature sensor electrically connected with the controller;

and/or the fluid outlet is provided with a pressure sensor electrically connected with the controller.

In one possible embodiment, the valve assembly comprises a first valve, a second valve and a connecting mechanism, and the fluid outlet is positioned on the cavity wall surface of the first cavity on the side close to the partition;

the first valve and the second valve are arranged at intervals along the direction from the first chamber to the second chamber and are respectively positioned at two opposite sides of the fluid outlet;

the connecting mechanism is connected between the first valve and the second valve, and the first valve and the second valve move in opposite directions or in opposite directions.

In one embodiment, the connecting mechanism includes a first rack, a gear and a second rack, the first rack is connected to the first valve, the second rack is connected to the second valve, the second rack extends in a direction close to the first rack, and the second rack is disposed opposite to at least a part of the first rack, and the gear is engaged between the first rack and the second rack.

In one implementation mode, the temperature sensing assembly comprises a supporting tube and a thermal bulb, and a temperature sensing medium which expands and contracts when being subjected to heat is filled in the thermal bulb;

the first end of the supporting pipe is connected to the second valve, the bulb is located in the supporting pipe, the second end of the supporting pipe is abutted to the first baffle, and part of the first baffle extends into the supporting pipe.

A second aspect of the embodiments of the present application provides a heating system, including heating pipeline and foretell valve, the valve set up in heating pipeline is last.

The embodiment of the application provides a valve and heating system. The valve is suitable for a heating system, the valve is provided with a first cavity and a second cavity, a fluid inlet and a fluid outlet are communicated with the first cavity, and a pressure stabilizing port is communicated with the fluid outlet, so that fluid at a heat source end of the heating system can enter the first cavity through the fluid inlet and flows to the heating end of the heating system through the fluid outlet. Fluid from the fluid outlet may also enter the second chamber through the pressure-stabilizing port.

Be provided with the pressure regulating subassembly in the second cavity, the fluid pressure of pressure regulating subassembly in the second cavity is according to, adjusts the valve member in the first cavity at fluid open-ended aperture to when the fluid pressure in the first cavity changes, can carry out automatically regulated through the fluid pressure of pressure regulating subassembly fluid outlet.

The temperature sensing assembly is arranged between the pressure regulating assembly and the valve assembly, senses the temperature of fluid in the valve assembly and regulates the opening of the valve assembly in the first chamber at the fluid opening, so that when the temperature of the fluid in the valve assembly changes, the pressure of the fluid at the fluid outlet can be automatically regulated through the pressure regulating assembly.

From this, the valve body has realized carrying out the automatically regulated of the fluid pressure of fluid export according to the fluidic pressure in the second chamber and the fluidic temperature in the valve body, and then can carry out automatically regulated to the fluid flow of fluid export and fluid heating load, labour saving and time saving, and temperature and heating load adjust suitably, and control effect is good, the energy can be saved.

This heating system is provided with above-mentioned valve, has same beneficial effect.

The construction and other objects and advantages of the present application will be more apparent from the description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of a valve provided in an embodiment of the present application;

FIG. 2 is a front view of a valve provided in accordance with an embodiment of the present application;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a view taken along line A-A of FIG. 3;

fig. 5 is a view from direction B-B of fig. 3.

Description of reference numerals:

100-a valve;

110-a valve body;

111-a first chamber; 112-a second chamber; 113-vent; 114-a separator; 115-a fluid outlet; 116-a pressure stabilization port; 117 — inlet line; 118-outlet line; 119-a branch line;

120-a valve assembly;

121-a first valve; 122-a second valve; 123-a connection mechanism; 1231 — a first rack; 1232 — second rack; 1233-gear; 124-connecting column; 125-a catheter;

130-a voltage regulation component;

131-a first baffle; 132-a second baffle; 133-an elastic member;

140-a temperature sensing component;

141-a support tube; 142-temperature bag;

150-a power assembly;

151-motor; 152-a lead screw; 153-a bearing; 154-a nut;

160-a controller;

161-temperature sensor; 162-a pressure sensor; 163-flow sensor.

Detailed Description

In the related art, a ball valve is arranged on a heat supply pipeline of a heat supply system and used for adjusting heat supply quantity. The ball valve comprises a valve body and a valve core. The valve body is provided with a liquid inlet, a liquid outlet and a cavity, the liquid inlet and the liquid outlet are symmetrically arranged on two sides of the central line of the valve body, and the cavity is communicated between the liquid inlet and the liquid outlet. The valve core is arranged in the cavity, the valve core and the cavity are of spherical structures which are matched with each other, and a through hole which is vertical to the central line of the valve body is arranged on the valve core. When the valve is used, the valve core is controlled to rotate around the central line of the valve body, so that the through hole is communicated between the liquid inlet and the liquid outlet to open the ball valve, or the valve core is blocked between the liquid inlet and the liquid outlet to close the ball valve; and the fluid flow at the liquid outlet is adjusted by controlling the rotation angle of the valve core around the central line of the valve body, so that the heat supply amount of the fluid is adjusted.

However, when the ball valve in the above technical scheme is used for heat adjustment, the angle of the valve core rotating around the central line of the valve body needs to be manually adjusted according to the temperature of the user side, so that the problems of time and labor waste, improper temperature adjustment, poor control effect and serious heat loss exist.

In order to solve the technical problem, the embodiment of the application provides a valve and a heating system. The valve is suitable for a heating system, the valve is provided with a first cavity and a second cavity, a fluid inlet and a fluid outlet are communicated with the first cavity, and a pressure stabilizing port is communicated with the fluid outlet, so that fluid at a heat source end of the heating system can enter the first cavity through the fluid inlet and flows to the heating end of the heating system through the fluid outlet. Fluid from the fluid outlet may also enter the second chamber through the pressure regulation port.

Be provided with the pressure regulating subassembly in the second cavity, the fluid pressure of pressure regulating subassembly in the second cavity is according to, adjusts the valve member in the first cavity at fluid open-ended aperture to when the fluid pressure in the first cavity changes, can carry out automatically regulated through the fluid pressure of pressure regulating subassembly fluid outlet.

The temperature sensing assembly is arranged between the pressure regulating assembly and the valve assembly, senses the temperature of fluid in the valve assembly and regulates the opening of the valve assembly in the first chamber at the fluid opening, so that when the temperature of the fluid in the valve assembly changes, the pressure of the fluid at the fluid outlet can be automatically regulated through the pressure regulating assembly.

From this, the valve body has realized carrying out the automatically regulated of the fluid pressure of fluid export according to the fluidic pressure in the second chamber and the fluidic temperature in the valve body, and then can carry out automatically regulated to the fluid flow of fluid export and fluid heating load, labour saving and time saving, and temperature and heating load adjust suitably, and control effect is good, the energy can be saved.

This heating system is provided with above-mentioned valve, has same beneficial effect.

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The heating system provided in the embodiment of the present application will be explained below.

The embodiment of the application provides a heating system, including heating pipeline and valve 100, valve 100 sets up on heating pipeline.

The heating system can be used for central heating of cities and can also be used in other fluid systems capable of providing certain heat supply. The heating system is provided with a heating pipeline through which fluid with a certain temperature flows. The valve 100 is installed on a heating pipeline, which can regulate the heating amount of fluid flowing through the valve 100.

The valve 100 provided in the embodiment of the present application will be described below with reference to fig. 1 to 5.

The embodiment of the present application provides a valve 100, which is applied to a heating system, and the valve 100 includes a valve body 110, a valve assembly 120, a pressure regulating assembly 130, and a temperature sensing assembly 140.

The valve body 110 has a first chamber 111 and a second chamber 112, the valve body 110 is opened with a fluid inlet (not labeled), a fluid outlet 115 and a pressure-stabilizing port 116, the fluid inlet and the fluid outlet 115 are both communicated with the first chamber 111, the pressure-stabilizing port 116 is communicated with the second chamber 112, and the pressure-stabilizing port 116 is communicated with the fluid outlet 115.

Wherein, the valve body 110 can be made of common heating and ventilation materials. The fluid inlet may be connected to a heat supply end of the heat supply pipeline and the fluid outlet 115 may be connected to a heat supply end of the heat supply pipeline.

In some embodiments, the fluid inlet may be integrally connected with an inlet pipeline 117, the fluid outlet 115 may be integrally connected with an outlet pipeline 118, and the connection of the valve body 110 and the heat supply pipeline may be facilitated by the arrangement of the inlet pipeline 117 and the outlet pipeline 118. A branch line 119 may be provided in the outlet line 118 to communicate with the surge port 116, thereby providing communication between the surge port 116 and the fluid outlet 115.

Thus, fluid from the heat source side of the heating system may enter the first chamber 111 via the fluid inlet and be discharged to the heating side of the heating system via the fluid outlet 115. And, the fluid discharged from the fluid outlet 115 also enters the second chamber 112 through the pressure-stabilizing port 116.

A valve assembly 120 is disposed in the first chamber 111.

The valve assembly 120 can block the fluid outlet 115 to prevent the fluid from flowing out, can completely expose the fluid outlet 115 to allow the fluid to flow out at the maximum flow rate, and can block part of the fluid outlet 115 to allow the fluid to flow out at the set flow rate. Thus, the valve assembly can have a set degree of openness at the fluid outlet 115, such that the fluid pressure and fluid flow at the fluid outlet 115 can be adjusted, and thus the fluid heating load can be adjusted.

A pressure regulating assembly 130 is disposed within the second chamber 112, the pressure regulating assembly 130 being configured to regulate the opening of the valve assembly 120 at the fluid outlet 115 based on the fluid pressure within the second chamber 112.

It is understood that the pressure regulating assembly 130 may have a reference pressure value, and the valve assembly 120 has a certain degree of openness at the fluid outlet 115 when the pressure at the fluid outlet 115 is at the pressure reference value. When the fluid pressure in the first chamber 111 is higher than the reference pressure value, the opening degree of the valve assembly 120 at the fluid outlet 115 can be reduced by the adjustment of the pressure regulating assembly 130, so that the fluid pressure at the fluid outlet 115 is reduced; when the fluid pressure in the first chamber 111 is lower than the reference pressure value, the opening degree of the valve assembly 120 at the fluid outlet 115 can be increased by the adjustment of the pressure adjusting assembly 130, so that the fluid pressure at the fluid outlet 115 is increased.

Thus, when only the fluid pressure in the first chamber 111 changes without considering other (e.g., temperature) parameters, the pressure regulating assembly 130 can change the fluid pressure at the fluid outlet 115 accordingly, so as to regulate the fluid flow rate and the fluid heating amount at the fluid outlet 115.

The temperature sensing assembly 140 is connected between the pressure regulating assembly 130 and the valve assembly 120, and is configured to adjust the opening degree of the valve assembly 120 at the fluid outlet 115 according to the temperature of the fluid in the valve body 110.

Similarly, the temperature sensing element 140 has a reference temperature value, and the valve assembly 120 has a certain opening degree at the fluid outlet 115 when the temperature of the fluid in the first chamber 111 is at the reference temperature value. When the temperature of the fluid in the first chamber 111 is higher than the reference temperature, the opening degree of the valve assembly 120 at the fluid outlet 115 can be reduced by adjusting the temperature sensing assembly 140, so that the fluid pressure at the fluid outlet 115 is reduced; when the temperature in the first chamber 111 is lower than the reference temperature, the opening degree of the valve assembly 120 at the fluid outlet 115 can be increased by adjusting the temperature sensing assembly 140, so that the fluid pressure at the fluid outlet 115 is increased.

Thus, when the temperature of the fluid in the first chamber 111 changes, the pressure regulating assembly 130 can correspondingly change the pressure of the fluid at the fluid outlet 115, so as to regulate the fluid flow rate of the fluid outlet 115 and the heat supply amount of the fluid.

So far, combining the combined action of the pressure regulating component 130 and the temperature sensing component 140, the valve 100 can automatically regulate the fluid pressure of the fluid outlet 115 according to the change of either or both of the reference pressure value and the reference temperature value, so as to regulate the fluid flow and the fluid heat supply amount, the control process is controllable, the regulating temperature is suitable, the time and the labor are saved, and the problem of heat waste is avoided.

In the above embodiments of the present application, the fluid inlet of the valve 100 is connected to the heat source end, and the fluid outlet 115 of the valve 100 is connected to the heat source end. It is understood that when the fluid inlet of the valve 100 is connected to the cold source end and the fluid outlet 115 of the valve 100 is connected to the cold supply end, the same advantages can be obtained, and the description is omitted.

In one possible embodiment, as shown in FIG. 4, the valve body 110 has a chamber with a diaphragm 114 disposed therein, the diaphragm 114 dividing the chamber into a first chamber 111 and a second chamber 112.

The partition plate 114 may be closely attached to the wall surface of the chamber, or may be fixedly connected to the wall surface of the chamber. Here, "close fit" refers to the fit between the diaphragm 114 and the chambers, which prevents fluid from flowing between the first chamber 111 and the second chamber 112 through the diaphragm 114. The cross-sectional shape of the chamber includes a circle or a rectangle. In some embodiments, the cross-sectional shape of the chamber may also include a polygon.

Thus, a chamber is directly formed in the valve 100 and is divided into the first chamber 111 and the second chamber 112 by the partition plate 114, so that the first chamber 111 and the second chamber 112 share the partition plate 114, thereby simplifying the internal structure of the valve body 110 and reducing the volume of the valve body 110.

In one possible embodiment, as shown in fig. 4 and 5, the valve assembly 120 includes a first valve 121, a second valve 122, and a connecting mechanism 123, and the fluid outlet 115 is located on the wall surface of the first chamber 111 on the side close to the partition 114.

The first valve 121 and the second valve 122 are disposed at intervals along a direction from the first chamber 111 to the second chamber 112, and are respectively located at two opposite sides of the fluid outlet 115.

The connecting mechanism 123 is connected between the first valve 121 and the second valve 122, and the first valve 121 and the second valve 122 move toward or away from each other.

The peripheries of the first valve 121 and the second valve 122 on the sides close to the fluid outlet 115 are attached to the wall surface of the cavity where the fluid outlet 115 is located, so that the opening degree of the fluid outlet 115 is adjusted by the mutual movement of the first valve body 110 and the second valve body 110. It is understood that when the first valve 121 and the second valve 122 move toward each other, the opening degree of the fluid outlet 115 becomes smaller, and the fluid pressure and the fluid flow rate of the fluid outlet 115 become smaller. When the first valve 121 and the second valve 122 move away from each other, the opening degree of the fluid outlet 115 becomes larger, and the fluid pressure and the fluid flow rate of the fluid outlet 115 become larger.

Thus, the first valve 121 or the second valve 122 can be directly connected to the temperature sensing element 140, so that the valve assembly 120 is indirectly connected to the pressure regulating element 130. The pressure regulating assembly 130 senses the change of the fluid pressure in the second chamber 112, the temperature sensing assembly 140 senses the change of the fluid temperature in the first chamber 111, and when any one or two of the above-mentioned assemblies senses the corresponding change, the first valve 121 and the second valve 122 can move mutually to realize the change of the opening degree of the first valve on the fluid outlet 115, so as to automatically regulate the fluid pressure and the fluid flow of the fluid outlet 115, and further automatically regulate the heat supply amount of the fluid.

In one possible embodiment, as shown in fig. 4 and 5, the connecting mechanism 123 includes a first rack 1231, a gear 1233, and a second rack 1232, the first rack 1231 is connected to the first valve 121, the second rack 1232 is connected to the second valve 122, the second rack 1232 extends toward the first rack 1231, and the second rack 1232 is disposed opposite to at least a portion of the first rack 1231, and the gear 1233 is engaged between the first rack 1231 and the second rack 1232.

In the embodiment, the fluid inlet and the fluid outlet 115 are disposed opposite to each other, the first valve 121 and the second valve 122 are both disposed on a side close to the fluid outlet 115, and the first valve 121 is disposed on a side far from the second chamber 112. The orthographic projection of the second valve 122 on the first valve 121 covers the first valve 121. The side wall surfaces of the first valve 121 and the second valve 122 on the side close to the fluid outlet 115 are connected in a sliding manner along the wall surface of the first chamber.

Illustratively, when the cross-section of the first chamber 111 is rectangular, the fluid outlet 115 is located on the chamber wall corresponding to the long side of the rectangle, and the fluid outlet 115 is located at the center of the chamber wall. The cross-sectional shapes of the second valve 122 and the first valve 121 may each be rectangular. Wherein, in the width direction of the cross section of the first chamber 111, the width of the cross section of the second valve 122 and the first valve 121 may be each half of the width of the cross section of the first chamber 111. The length of the cross section of the second valve 122 may be equal to the length of the cross section of the first chamber 111 in the length direction of the cross section of the first chamber 111, the length of the cross section of the first valve 121 may be slightly greater than the diameter of the fluid opening, and the positions of the first valve 121 and the fluid opening correspond to each other.

In this embodiment, the connection mechanisms 123 may be symmetrically disposed on two sides of the first valve 121. The following description will be given by taking only the connecting mechanism 123 provided on one side as an example.

The first rack 1231 may be connected to a side of the second valve 122 away from the second chamber 112 and extend toward the first valve 121, and the first chamber 111 and the first rack 1231 may be slidably connected. For example, a slide way is formed on one of the cavity wall surface of the first cavity 111 and the first rack 1231, and a slide bar is arranged on the other one of the cavity wall surface of the first cavity 111 and the first rack 1231, and the slide bar is in sliding fit with the slide way.

The second rack 1232 may be fixedly connected to the first valve 121, or may be integrally formed with the first valve 121.

The gear 1233 is mounted on the valve body 110 through a central shaft, and the gear 1233 is engaged between the first rack 1231 and the second rack 1232. When the gear 1233 rotates, the first rack 1231 and the second rack 1232 move toward or away from each other, so that the first valve 121 and the second valve 122 move toward or away from each other, thereby closing or opening the fluid outlet 115, and thus, the opening degree of the valve assembly 120 on the fluid outlet 115 is changed.

In the embodiment of the present application, it is considered that the side of the second valve 122 close to the second chamber 112 needs to be connected with the temperature sensing assembly 140, so that the contact area of the second valve 122 with the fluid is reduced. A connecting column 124 is arranged between the first valve 121 and the second valve 122, and the first valve 121 and the second valve 122 are provided with sliding grooves corresponding to each other. One end of the connecting column 124 closely fits and slides in the sliding groove of the first valve 121, and the other end of the connecting column 124 closely fits and slides in the sliding groove of the second valve 122. The center of the connecting column 124 is provided with an air vent which is communicated with the chutes of the first valve 121 and the second valve 122. The second valve 122 is connected with a conduit 125, one end of the conduit 125 is communicated with the chute on the second valve 122 or the first valve 121, and the other end of the conduit 125 passes through the first chamber 111 and is communicated with the outside atmosphere. Thus, the connecting post 124 is tightly attached to the chute so that no fluid can flow into the chute. The duct 125 can communicate the chute with the outside atmosphere, preventing the gas remaining in the chute from affecting the movement of the connecting column 124. Therefore, the first valve 121, the second valve 122 and the connecting mechanism 123 can achieve a force balance in the first cavity.

In one possible embodiment, as shown in fig. 4, the pressure regulating assembly 130 includes a first baffle 131, a second baffle 132 and an elastic member 133, and the pressure stabilizing port 116 is located on the chamber wall surface of the second chamber 112 on the side close to the partition 114.

The first baffle 131 and the second baffle 132 are located on opposite sides of the surge port 116, and the first baffle 131 is located on a side of the second baffle 132 adjacent to the partition 114.

The outer peripheral surface of the first baffle 131 and the outer peripheral surface of the second baffle 132 are both fitted to the wall surface of the second chamber 112, and the elastic member 133 is connected between the first baffle 131 and the second baffle 132.

The first baffle 131 and the second baffle 132 can slide along the wall surface of the second chamber 112, and the elastic member 133 can include springs, and one or more sets of springs can be provided, and one or more sets of springs are connected between the first baffle 131 and the second baffle 132.

When the valve 100 is in the initial state, the first and second shutters 131 and 132 are kept apart by the elastic force of the elastic member 133, the first shutter 131 is connected to the second valve 122, and the first and second valves 121 and 122 are moved away from each other, so that the fluid outlet 115 is fully opened. Fluid enters from the heat source end through the fluid inlet and fills the first chamber 111, a part of the fluid flows to the heat supply end through the fluid outlet 115, and a part of the fluid enters the pressure stabilizing port 116 and fills between the first baffle 131 and the second baffle 132.

Since the fluid has a certain pressure, the fluid exerts pressure on the first barrier 131 and the second barrier 132, and as the fluid in the second chamber 112 increases, the pressure of the fluid overcomes the elastic force of the elastic member 133 between the first barrier 131 and the second barrier 132, so that the distance between the first barrier 131 and the second barrier 132 is away from each other. When the pressure of the fluid and the elastic force of the elastic member 133 are offset and reach equilibrium, the first baffle 131 and the second baffle 132 are away from each other and in a steady state, and the first valve 121 and the second valve 122 form a partial seal to the fluid outlet 115, so that the fluid outlet 115 has a steady fluid pressure and a steady fluid flow (the fluid pressure can be considered as the reference pressure value).

As the fluid pressure in the first chamber 111 increases, the fluid pressure in the second chamber 112 increases. The increased fluid pressure overcomes the elastic force of the elastic member 133 to move the first and second shutters 131 and 132 further away from each other, and further move the first and second valves 121 and 122 closer to each other, thereby forming a restriction to the fluid flow of the fluid outlet 115 and reducing the fluid pressure of the fluid outlet 115.

At this time, the fluid pressure of the fluid outlet 115 is reduced synchronously with the fluid pressure in the second chamber 112, and the reduced fluid pressure relatively approaches the distance between the first and second shutters 131 and 132 and relatively moves the distance between the first and second valves 121 and 122 under the elastic force of the elastic member 133, so that the fluid pressure of the fluid outlet 115 is relatively increased again. The fluid pressure in the fluid outlet 115 and the fluid pressure in the second chamber 112 go through the above-mentioned negative feedback process several times, and the fluid pressure in the second chamber 112 and the elastic force of the elastic member 133 reach a new equilibrium.

It is worth noting that during the negative feedback, the distance between the first baffle 131 and the second baffle 132 is still in an increased state compared to when the fluid pressure of the fluid outlet 115 is at the reference pressure value, and the distance between the two changes by a smaller amount compared to the instant when the fluid pressure in the first chamber 111 increases, and thus is said to be "relatively close". Likewise, the "relative distance" between the first valve 121 and the second valve 122, and the "relative increase" of the fluid pressure at the fluid outlet 115 have the same meaning, i.e. the parameter remains "distance" or "increase" with respect to the state when the fluid pressure at the fluid outlet 115 is at the reference pressure value, but the amount of change of the parameter is small with respect to the state when the fluid pressure in the first chamber 111 is increased. Thereby, the value of the fluid pressure in the second chamber 112 at the time of increasing the fluid pressure with respect to the first chamber 111 becomes smaller, so that the pressure of the fluid outlet 115 is reduced and maintained at the reduced pressure value.

Similarly, when the pressure of the fluid in the first chamber 111 becomes lower, the pressure of the fluid in the second chamber 112 and the elastic force of the elastic member 133 reach a new balance, so that the pressure of the fluid outlet 115 is increased and maintained at the increased pressure value.

Thus, the pressure and flow rate of the fluid at the fluid outlet 115 can be automatically adjusted by the pressure adjusting assembly 130, and thus the heat supply amount of the fluid can be automatically adjusted.

In one possible embodiment, as shown in fig. 1 and 4, the valve body 110 is opened with a gas discharge hole 113, and the gas discharge hole 113 is communicated with the second chamber 112 located on the side of the first baffle 131 far from the second baffle 132.

Thus, the side of the first blocking plate 131 close to the first chamber 111 is at atmospheric pressure, which can avoid extra load on the elastic member 133, so that the movement resistance of the first blocking plate 131 is smaller than that of the second blocking plate 132, and the change of the fluid pressure in the second chamber 112 is reflected on the movement of the first blocking plate 131, so that the pressure regulating effect of the pressure regulating assembly 130 can be more sensitively transmitted to the valve assembly 120.

The conduit 125 in the first chamber 111 may also communicate with the second chamber 112 at the exhaust port 113, so that the chute of the valve assembly 120 communicates with the outside atmosphere through the exhaust port 113.

In one possible embodiment, as shown in fig. 1-4, the valve 100 further includes a power assembly 150, and the power assembly 150 is connected to the second shutter 132 and drives the second shutter 132 to reciprocate toward and away from the first chamber 111.

In the present embodiment, the power assembly 150 includes a motor 151, a bearing 153, and a lead screw 152. A motor mounting seat is integrally connected to one side of the valve 100 close to the second baffle 132, and a motor 151 is fixed to the motor mounting seat. The output end of the motor 151 is connected to a lead screw 152, and a bearing 153 is installed between the lead screw 152 and the valve 100. The lead screw 152 penetrates into the second chamber 112 on the side of the second barrier 132 remote from the first barrier 131. The second baffle 132 is provided with a nut 154, and the screw 152 is in threaded connection with the nut 154. Under the driving of the motor 151, the lead screw 152 rotates and drives the nut 154 to move on the lead screw 152, so that the second baffle 132 reciprocates close to or away from the first chamber 111.

Thus, driving the second flap 132 closer to or away from the first chamber 111 via the power assembly 150 provides a more direct change in the position of the second valve 122, facilitating a greater range of fluid pressure regulation at the fluid outlet 115.

The power unit 150 may generate resistance against the second baffle 132, and thus, the change in the fluid pressure in the second chamber 112 may be reflected in the first baffle 131, thereby improving the pressure adjustment sensitivity of the pressure adjustment unit 130.

In one possible embodiment, as shown in fig. 1-2, the valve 100 further includes a controller 160, the controller 160 is electrically connected to the power assembly 150, and the fluid outlet 115 is provided with a flow sensor 163 electrically connected to the controller 160, a temperature sensor 161 electrically connected to the controller 160, and a pressure sensor 162 electrically connected to the controller 160.

Among them, the flow sensor 163, the temperature sensor 161, and the pressure sensor 162 may be provided on the outlet line 118. The flow sensor 163 is used to collect the flow at the fluid outlet 115 and transmit it to the controller 160. The temperature sensor 161 is used to collect the temperature at the fluid outlet 115 and transmit it to the controller 160. The pressure sensor 162 may collect the pressure at the fluid outlet 115 and communicate to the controller 160. The controller 160 may be connected to the motor 151 to drive the motor 151 to reciprocate the second shutter 132 toward or away from the first chamber 111.

In this way, the controller 160 can obtain the temperature, the pressure or the flow rate of the fluid at the fluid outlet 115, and drive the second baffle 132 based on the above-mentioned parameters, so that the pressure regulating assembly 130 and the temperature sensing assembly 140 have more pertinence to the regulation of the fluid pressure and the fluid flow rate of the fluid outlet 115, and the regulation efficiency is improved.

In some embodiments, only one or two of the above-described sensors may be provided at the fluid outlet 115.

In one possible embodiment, as shown in fig. 4, the temperature sensing assembly 140 includes a support tube 141 and a thermal bulb 142, and the thermal bulb 142 is filled with a temperature sensing medium that expands and contracts when exposed to heat.

The first end of the support tube 141 is connected to the second valve 122, the bulb 142 is located in the support tube 141, the second end of the support tube 141 abuts against the first baffle 131, and a portion of the first baffle 131 extends into the support tube 141.

Wherein the support tube 141 is fixedly connected with the second valve 122, and the thermal bulb 142 can be placed in the support tube 141. The thermal bulb 142 can be understood as a thermal bulb 142 type temperature sensor 161, which belongs to a mechanical temperature sensitive element, and converts the change of temperature into the change of displacement or force by using the expansion of some substances when heated. Illustratively, the substance within the bulb 142 may include paraffin.

When the temperature of the fluid in the first cavity is at the reference temperature value, the volume of the thermal bulb 142 is heated to expand, and one end of the thermal bulb 142 close to the pressure regulating assembly 130 is blocked and cannot be displaced, so that the thermal bulb 142 pushes the second valve 122 to move in the direction away from the second cavity 112, and the first baffle 131 and the support tube 141 slide. The movement of the second valve 122 causes the first valve 121 and the second valve 122 to approach each other and block a portion of the fluid outlet 115 for throttling, so that the fluid pressure and the fluid flow of the fluid outlet 115 are kept stable.

When the temperature of the fluid in the first cavity is higher than the reference temperature value, the volume of the bulb 142 is heated to expand, the bulb 142 further pushes the second valve 122 to move away from the second cavity 112, so that the first valve 121 and the second valve 122 approach each other to further throttle the fluid outlet 115, and the fluid pressure and the fluid flow of the fluid outlet 115 become smaller.

When the temperature of the fluid in the first cavity is lower than the reference temperature value, the volume of the thermal bulb 142 is shrunk due to cooling (or the volume of the thermal bulb 142 is considered to be decreased due to thermal expansion), the second valve 122 is moved toward the second chamber 112 by the shrinkage of the thermal bulb 142, so that the first valve 121 and the second valve 122 are far away from each other, and the fluid pressure and the fluid flow rate of the fluid outlet 115 are increased.

Thus, the temperature sensing assembly 140 can automatically adjust the fluid pressure and the fluid flow rate of the fluid outlet 115 according to the fluid temperature in the first cavity, so as to automatically adjust the heat supply amount of the fluid.

It should be noted that, unless otherwise specifically stated or limited in the description of the embodiments of the present application, the terms "mounted," "connected," and "connected" are to be construed broadly, and may for example be fixed or indirectly connected through intervening media, or may be connected through two elements or in the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the embodiments of the present application, the term "and/or" merely represents an association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. Additionally, the term "at least one" means any combination of any one or more of a variety of at least two, including, for example, A, B, and may mean any one or more elements selected from the group consisting of A, B and C.

In the description of the embodiments of the present application, the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Further, the term "plurality" means two or more unless specifically stated otherwise.

In the description of the embodiments of the present application, the terms "first," "second," "third," "fourth," and the like (if any) are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be implemented in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. The valve is characterized by being applied to a heating system and comprising a valve body, a valve component, a pressure regulating component and a temperature sensing component;

the valve body is provided with a first cavity and a second cavity, the valve body is provided with a fluid inlet, a fluid outlet and a pressure stabilizing port, the fluid inlet and the fluid outlet are communicated with the first cavity, the pressure stabilizing port is communicated with the second cavity, the pressure stabilizing port is communicated with the fluid outlet, and the valve assembly is arranged in the first cavity;

the pressure regulating assembly is arranged in the second chamber and is configured to regulate the opening degree of the valve assembly at the fluid outlet according to the fluid pressure in the second chamber;

the temperature sensing assembly is connected between the pressure regulating assembly and the valve assembly and is configured to regulate the opening degree of the valve assembly at the fluid outlet according to the temperature of the fluid in the valve body.

2. The valve of claim 1, wherein the valve body has a chamber with a baffle disposed therein, the baffle dividing the chamber into the first chamber and the second chamber.

3. The valve of claim 2, wherein the pressure regulating assembly comprises a first baffle plate, a second baffle plate and an elastic member, and the pressure stabilizing port is positioned on the cavity wall surface of the second cavity on the side close to the partition plate;

the first baffle and the second baffle are positioned at two opposite sides of the pressure stabilizing port, and the first baffle is positioned at one side of the second baffle close to the baffle;

the peripheral surface of the first baffle and the peripheral surface of the second baffle are attached to the wall surface of the cavity of the second cavity, and the elastic piece is connected between the first baffle and the second baffle.

4. The valve according to claim 3, wherein the valve body is provided with an exhaust hole, and the exhaust hole is communicated with the second chamber on the side of the first baffle plate far away from the second baffle plate.

5. The valve of claim 3, further comprising a power assembly coupled to the second flapper and driving the second flapper to reciprocate toward and away from the first chamber.

6. The valve of claim 5, further comprising a controller,

the controller is electrically connected with the power assembly;

and/or the fluid outlet is provided with a flow sensor electrically connected with the controller;

and/or the fluid outlet is provided with a temperature sensor electrically connected with the controller;

and/or the fluid outlet is provided with a pressure sensor electrically connected with the controller.

7. A valve according to any one of claims 3 to 6 wherein the valve assembly comprises a first valve, a second valve and a connecting means, the fluid outlet being located in a wall surface of the first chamber adjacent the partition;

the first valve and the second valve are arranged at intervals along the direction from the first chamber to the second chamber and are respectively positioned at two opposite sides of the fluid outlet;

the connecting mechanism is connected between the first valve and the second valve, and the first valve and the second valve move in a face-to-face or back-to-back mode.

8. The valve of claim 7, wherein the linkage comprises a first rack, a gear, and a second rack, the first rack being coupled to the first valve, the second rack being coupled to the second valve, the second rack extending in a direction adjacent to the first rack, and the second rack being disposed opposite at least a portion of the first rack, the gear being meshingly coupled between the first rack and the second rack.

9. The valve according to claim 7, wherein the temperature sensing assembly comprises a support tube and a thermal bulb, and the thermal bulb is filled with a temperature sensing medium which expands and contracts when being heated and cooled;

the first end of the supporting pipe is connected to the second valve, the bulb is located in the supporting pipe, the second end of the supporting pipe is abutted to the first baffle, and part of the first baffle extends into the supporting pipe.

10. A heating system comprising a heating pipeline and a valve as claimed in any one of claims 1 to 9, said valve being disposed on said heating pipeline.

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