Unpowered temperature sensing type louver valve component

Abstract

The invention discloses an unpowered temperature sensing type louver valve component, belongs to the technical field of valves, solves the technical problems that a temperature bulb type valve is complex in structure and long in thermal response time, and an electric temperature control valve is high in cost, and comprises a valve body, a louver valve plate and a temperature sensing component, the shutter valve plate is arranged in an inner cavity of the valve body in a crossing mode through the valve shaft, the outer end of the valve shaft penetrates through the side wall of the valve body and extends out of the valve body, the outer end of the valve shaft is fixedly connected with one end of the crank, the other end of the crank is hinged to the movable connecting rod, and the movable connecting rod is arranged in the vertical direction. The multiple temperature sensing components penetrate through the side wall of the valve body and make contact with the corresponding louver valve plates, and the temperature sensing components drive the louver valve plates to rotate. The device is simple in structure, does not depend on additional power equipment to adjust the opening degree of the valve, achieves self-adaptive adjustment through the liquid amount difference of the temperature sensing working medium caused by the temperature difference between the temperature sensing end and the reference end, and is short in thermal response time, stable in operation and convenient to operate.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to a non-powered temperature-sensitive shutter valve component. Background Art

[0002] Valves are important control components to ensure equipment operation and maintenance. The adjustment and opening and closing of valves directly affect the key parameters of the fluid direction, pressure, flow rate, etc. in the fluid distribution system. The automatic control of valves is to change the area of ​​the flow channel according to the pressure changes caused by the flow velocity or temperature changes in the flow channel under the action of pressure, temperature or other forms of sensor signals, and then change the area of ​​the flow channel according to the predetermined action.

[0003] Traditional self-operated temperature control valves use the principle of thermal expansion of temperature-sensitive working fluids (liquids or gases) and the incompressibility of liquids to achieve automatic adjustment. However, the valve structure designed based on this principle is relatively complex and the thermal response time is relatively long. For example, according to the standard "JB / T 11048-2010 Self-operated temperature regulating valves", the time constant of direct temperature bag type valves is about 100s; while traditional electric temperature control valves use temperature sensors to convert temperature into electrical signals and transmit them back to the controller to control the valve. This structure has high adjustment accuracy and a small time constant, but it is expensive and consumes electricity. The valve cannot be opened or closed when the power is off. Summary of the invention

[0004] The main purpose of the present invention is to overcome the deficiencies in the prior art and to provide a non-powered temperature-sensitive shutter valve component which has a simple structure, is inexpensive, has a fast thermal response time, is stable in operation, and can automatically adjust according to changes in the working environment.

[0005] The present invention is implemented through the following technical scheme: a non-powered temperature-sensitive shutter valve component, which includes a valve body, a shutter valve plate and a temperature-sensitive component, wherein: a valve shaft is respectively arranged at the head and tail ends of the shutter valve plate, the shutter valve plate is arranged across the left and right opposite side walls of the inner cavity of the valve body through the valve shaft, and a plurality of the shutter valve plates are arranged in sequence from top to bottom; the outer end of the valve shaft penetrates the side wall of the valve body and extends to the outside of the valve body, the outer end of the valve shaft is fixedly connected to one end of a crank, the other end of the crank is hinged to a movable connecting rod, and the movable connecting rod is arranged in a vertical direction; a plurality of the temperature-sensitive components respectively penetrate the side wall of the valve body and contact the corresponding shutter valve plates, and the temperature-sensitive components drive the shutter valve plates to rotate; The temperature sensing component includes a temperature sensing end, a reference end and a heat conducting tube. The temperature sensing end and the reference end are both configured as hollow spheres. The temperature sensing end is configured in the inner cavity of the valve body. The temperature sensing end contacts the corresponding shutter valve plate. A temperature sensing medium is added to the temperature sensing end. The reference end is configured outside the valve body. The heat conducting tube runs through the side wall of the valve body. The temperature sensing end and the reference end are connected through the heat conducting tube. The temperature sensing end and the reference end are configured in different planes. A short rod is fixedly configured on the heat conducting tube located outside the valve body. The end of the short rod is hinged to the movable connecting rod. The hinged position of the end of the short rod is alternately configured with the hinged position of the crank end. Assuming that the temperature inside the valve body is higher than the temperature outside the valve body in the initial state, the liquid temperature-sensing medium in the temperature-sensing end is heated to become a vaporized temperature-sensing medium, and the vaporized temperature-sensing medium flows to the reference end through the heat pipe and is cooled again in the reference end to condense into a liquid temperature-sensing medium. The weight of the reference end increases and the weight of the temperature-sensing end decreases, thereby driving the temperature-sensing component to rotate. The short rod drives the crank to drive the valve shaft to rotate through the movable connecting rod, and the shutter valve plate rotates around the valve shaft, and the shutter valve plate opens, otherwise the shutter valve plate closes. In the present invention, the temperature-sensing medium can automatically control the valve opening according to the temperature difference between the temperature-sensing end and the reference end, without the need for additional power equipment.

[0006] Furthermore, connecting flanges are arranged around the outer wall of the valve body for pressing and sealing the valve and the control channel.

[0007] Furthermore, the heat conducting tube is a thin-walled hollow copper tube.

[0008] Furthermore, a sealing plug is provided at the contact position between the outer wall of the heat conducting pipe and the side wall of the valve body.

[0009] Furthermore, lubricating oil is coated on the inner wall of the sealing plug to reduce the rotational resistance of the heat conducting pipe.

[0010] Furthermore, the temperature-sensitive working fluid is ether, dichloromethane or water, and the type of the temperature-sensitive working fluid is determined according to the temperature difference between the inside and outside of the valve body, the working fluid temperature and the actual response temperature range.

[0011] Furthermore, the installation angle between the crank and the valve shaft is 45°, and the rotation range of the crank is ±45°; when the rotation angle of the crank is -45°, the louver valve plate is fully open; when the rotation angle of the crank is 45°, the louver valve plate is fully closed.

[0012] Furthermore, elastic silicone strips are provided on the upper and lower edges of the shutter valve plate and along the length direction of the shutter valve plate to ensure that the elastic silicone strips are squeezed against each other to form a seal when the shutter valve plate is fully closed.

[0013] Furthermore, the projection angle between the reference end and the temperature sensing end on the coaxial plane is 90° to 95°, which is more conducive to ensuring the normal operation of the valve.

[0014] The beneficial effects of the present invention are: 1. The present invention does not rely on additional power equipment to adjust the valve opening. The temperature difference between the temperature sensing end and the reference end causes the liquid volume difference of the temperature sensing medium to achieve adaptive adjustment. It can be widely used for flow control of high, medium and low temperature fluids, and has energy-saving effect in the process of fluid transportation and distribution; 2. The present invention has a simple structure, and each component is independent of each other, which is easy to disassemble. It can be applied to different working conditions by replacing the temperature sensing component, which is convenient and quick during inspection and maintenance; 3. The reference end liquid level and the rotation angle in the present invention respectively indicate the local and minimum temperatures of the fluid. By driving the connecting rod movement together by multiple temperature sensing components, the erroneous opening or closing of the valve caused by local fluid overheating or overcooling can be reduced, thereby ensuring stable transmission of the device and reliable opening and closing of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure of the temperature sensing component from a top view; Figure 3 It is a schematic diagram of the left-side structure of the temperature sensing component; Figure 4 It is a schematic diagram of the assembly structure of the shutter valve plate and the valve shaft; Figure 5 It is a comparison diagram of the operating status of the present invention.

[0016] In the figure, 1-valve body; 2-louver valve plate; 3-valve shaft; 4-heat conduction tube; 5-temperature sensing end; 6-reference end; 7-connecting flange; 8-movable connecting rod; 9-crank; 10-sealing plug; 11-short rod. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] like Figures 1 to 4 A non-powered temperature-sensitive shutter valve component is shown, which comprises a valve body 1, a shutter valve plate 2 and a temperature-sensitive component, wherein: a valve shaft 3 is respectively arranged at the head and tail ends of the shutter valve plate 2, and the shutter valve plate 2 is arranged across the left and right opposite side walls of the inner cavity of the valve body 1 through the valve shaft 3, and a plurality of the shutter valve plates 2 are arranged in sequence from top to bottom; the outer end of the valve shaft 3 penetrates the side wall of the valve body 1 and extends to the outside of the valve body 1, the outer end of the valve shaft 3 is fixedly connected to one end of a crank 9, and the other end of the crank 9 is hinged to a movable connecting rod 8, and the movable connecting rod 8 is arranged in the vertical direction; a plurality of the temperature-sensitive components respectively penetrate the side wall of the valve body 1 and contact the corresponding shutter valve plates 2, and the temperature-sensitive components drive the shutter valve plates 2 to rotate; The temperature sensing component includes a temperature sensing end 5, a reference end 6 and a heat conducting tube 4. The temperature sensing end 5 and the reference end 6 are both configured as hollow spheres. The temperature sensing end 5 is configured in the inner cavity of the valve body 1. The temperature sensing end 5 contacts the corresponding shutter valve plate 2. A temperature sensing medium is added to the temperature sensing end 5. The reference end 6 is configured outside the valve body 1. The heat conducting tube 4 penetrates the side wall of the valve body 1. The temperature sensing end 5 and the reference end 6 are connected through the heat conducting tube 4, and the temperature sensing end 5 and the reference end 6 are configured in different planes. A short rod 11 is fixedly configured on the heat conducting tube 4 located outside the valve body 1. The end of the short rod 11 is hinged to the movable connecting rod 8, and the hinged position of the end of the short rod 11 is alternately configured with the hinged position of the end of the crank 9. Assuming that the temperature inside the valve body 1 is higher than the temperature outside the valve body 1 in the initial state, the liquid temperature-sensing medium in the temperature-sensing end 5 is heated to become an evaporated temperature-sensing medium, and the evaporated temperature-sensing medium flows to the reference end 6 through the heat pipe 4 and is cooled again in the reference end 6 to condense into a liquid temperature-sensing medium. The weight of the reference end 6 increases and the weight of the temperature-sensing end 5 decreases, thereby driving the temperature-sensing component to rotate. The short rod 11 drives the crank 9 through the movable connecting rod 8 to drive the valve shaft 3 to rotate, and the louver valve plate 2 rotates around the valve shaft 3, and the louver valve plate 2 is opened, otherwise the louver valve plate 2 is closed.

[0019] Furthermore, connecting flanges 7 are arranged around the outer wall of the valve body 1 .

[0020] Furthermore, the heat conducting tube 4 is a thin-walled hollow copper tube.

[0021] Furthermore, a sealing plug 10 is provided at the contact position between the outer wall of the heat conducting pipe 4 and the side wall of the valve body 1 .

[0022] Furthermore, lubricating oil is coated on the inner wall of the sealing plug 10 to reduce the rotation resistance of the heat pipe 4 .

[0023] Furthermore, the temperature-sensitive working fluid is ether, dichloromethane or water, and the type of the temperature-sensitive working fluid is determined according to the temperature difference between the inside and outside of the valve body 1, the working fluid temperature and the actual response temperature range.

[0024] Furthermore, the installation angle between the crank 9 and the valve shaft 3 is 45°, and the rotation range of the crank 9 is ±45°; when the rotation angle of the crank 9 is -45°, the louver valve plate 2 is fully open; when the rotation angle of the crank 9 is 45°, the louver valve plate 2 is fully closed.

[0025] Furthermore, elastic silicone strips are provided on the upper and lower edges of the shutter valve plate 2 and along the length direction of the shutter valve plate 2 to ensure that the elastic silicone strips are squeezed against each other to form a seal when the shutter valve plate 2 is fully closed.

[0026] Furthermore, the projection angle between the reference end 6 and the temperature sensing end 5 on the coaxial plane is 90° to 95°.

[0027] The use process and principle of the present invention are as follows: When the ambient temperature at the temperature sensing end 5 is greater than the ambient temperature at the reference end 7, Figure 5 As shown in the left part, the temperature-sensing medium at the temperature-sensing end 5 evaporates and liquefies at the reference end 7. At this time, the weight at the temperature-sensing end 5 decreases, and the weight at the reference end 7 increases. At this time, the reference end 7 rotates clockwise, and the short rod 11 transmits the torque at the heat pipe 4 to the movable connecting rod 8, driving the shutter valve plate 2 to rotate clockwise, and the opening of the valve gradually decreases. When the filling rate in the reference end 7 is 95%, the temperature in the flow channel reaches the maximum allowable temperature, and the valve is fully closed; When the ambient temperature at the temperature sensing end 5 is lower than the ambient temperature at the reference end 7, Figure 5 As shown in the right part, the temperature-sensitive medium at the reference end 7 evaporates and liquefies at the temperature-sensitive end 5. At this time, the weight at the temperature-sensitive end 5 increases, and the weight at the reference end 7 decreases. At this time, the reference end 7 rotates counterclockwise, and the short rod 11 transmits the torque at the heat pipe 4 to the movable connecting rod 8, driving the shutter valve plate 2 to rotate counterclockwise, and the valve opening gradually increases. When the reference end filling rate is 5%, the temperature in the flow channel reaches the minimum allowable temperature, and the valve is fully opened. When the reference end filling rate is less than 5%, the equipment should be stopped and the reason for the low fluid temperature should be checked.

[0028] In the present invention, the time constant τ of the temperature sensing component is related to the material selection and shape design. The temperature sensing medium can be determined according to the actual response temperature range and valve action temperature, and the shape of the temperature sensing component can be designed according to the pressure in the flow channel, the filling amount of the temperature sensing medium, the minimum torque for the shutter valve plate to start, and other parameters. The time constant τ of the temperature sensing component is calculated as follows: ; In the formula, ρ is the material density in kg / m³; V is the material volume, in m³; c p is the specific heat capacity of the material, in J / (kg·K); h c is the convection heat transfer coefficient between the temperature-sensing medium and the temperature-sensing end, in W / (m·K); A c is the convective heat transfer area at the reference end, in m 2 .

[0029] In this specific embodiment, the temperature sensing component is made of copper, the temperature sensing medium is water, the tube wall thickness is 1mm, and the temperature sensing end diameter is 30mm. When the convection heat transfer coefficient between the temperature sensing end and the temperature sensing medium is 5W / (m·K), the time constant τ of the temperature sensing end of the temperature sensing component is: .

[0030] Meanwhile, it can be known that the time constant of the present invention under the design parameters is much smaller than the time constant of the traditional temperature-controlled valve (about 100 s), and the present invention has the advantage of fast response speed.

[0031] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A non-powered temperature-sensitive shutter valve component, comprising a valve body (1), a shutter valve plate (2) and a temperature-sensitive component, characterized in that: A valve shaft (3) is respectively arranged at the head and tail ends of the shutter valve plate (2), and the shutter valve plate (2) is arranged across the left and right opposite side walls of the inner cavity of the valve body (1) through the valve shaft (3), and a plurality of the shutter valve plates (2) are arranged in sequence from top to bottom; the outer end of the valve shaft (3) penetrates the side wall of the valve body (1) and extends to the outside of the valve body (1), the outer end of the valve shaft (3) is fixedly connected to one end of a crank (9), and the other end of the crank (9) is hinged to a movable connecting rod (8), and the movable connecting rod (8) is arranged in the vertical direction; a plurality of the temperature sensing components respectively penetrate the side wall of the valve body (1) and contact the corresponding shutter valve plates (2), and the temperature sensing components drive the shutter valve plates (2) to rotate; The temperature sensing component comprises a temperature sensing end (5), a reference end (6) and a heat conducting tube (4); the temperature sensing end (5) and the reference end (6) are both configured as hollow spheres; the temperature sensing end (5) is disposed in the inner cavity of the valve body (1); the temperature sensing end (5) contacts the corresponding shutter valve plate (2); a temperature sensing medium is added to the temperature sensing end (5); the reference end (6) is disposed outside the valve body (1); the heat conducting tube (4) penetrates the side wall of the valve body (1); the temperature sensing end (5) and the reference end (6) are connected via the heat conducting tube (4); and the temperature sensing end (5) and the reference end (6) are disposed on different surfaces; a short rod (11) is fixedly disposed on the heat conducting tube (4) located outside the valve body (1); the end of the short rod (11) is hinged to the movable connecting rod (8); and the hinged position of the end of the short rod (11) and the hinged position of the end of the crank (9) are alternately disposed; Assuming that the temperature inside the valve body (1) is higher than the temperature outside the valve body (1) in the initial state, the liquid temperature-sensing medium in the temperature-sensing end (5) is heated to become an evaporating temperature-sensing medium, and the evaporating temperature-sensing medium flows to the reference end (6) through the heat-conducting pipe (4) and is cooled again in the reference end (6) to condense into a liquid temperature-sensing medium. The weight of the reference end (6) increases and the weight of the temperature-sensing end (5) decreases, thereby driving the temperature-sensing component to rotate. The short rod (11) drives the crank (9) through the movable connecting rod (8) to drive the valve shaft (3) to rotate, and the shutter valve plate (2) rotates around the valve shaft (3). The shutter valve plate (2) is opened, and vice versa.

2. The non-powered temperature-sensitive shutter valve component according to claim 1, characterized in that: Connecting flanges (7) are arranged around the outer wall of the valve body (1).

3. The non-powered temperature-sensitive shutter valve component according to claim 1, characterized in that: The heat conducting tube (4) is a thin-walled hollow copper tube.

4. The non-powered temperature-sensitive shutter valve component according to claim 1 or 3, characterized in that: A sealing plug (10) is provided at the contact position between the outer wall of the heat conducting pipe (4) and the side wall of the valve body (1).

5. The non-powered temperature-sensitive shutter valve component according to claim 4, characterized in that: Lubricating oil is coated on the inner wall of the sealing plug (10) to reduce the rotational resistance of the heat conducting pipe (4).

6. The non-powered temperature-sensitive shutter valve component according to claim 1, characterized in that: The temperature-sensitive working fluid is ether, dichloromethane or water, and the type of the temperature-sensitive working fluid is determined according to the temperature difference between the inside and outside of the valve body (1), the working fluid temperature and the actual response temperature range.

7. The non-powered temperature-sensitive shutter valve component according to claim 1, characterized in that: The installation angle between the crank (9) and the valve shaft (3) is 45°, and the rotation range of the crank (9) is ±45°; when the rotation angle of the crank (9) is -45°, the shutter valve plate (2) is fully open; when the rotation angle of the crank (9) is 45°, the shutter valve plate (2) is fully closed.

8. The non-powered temperature-sensitive shutter valve component according to claim 1, characterized in that: Elastic silicone strips are provided on the upper and lower edges of the shutter valve plate (2) and along the length direction of the shutter valve plate (2) to ensure that the elastic silicone strips are squeezed against each other to form a seal when the shutter valve plate (2) is fully closed.

9. The non-powered temperature-sensitive shutter valve component according to claim 1, characterized in that: The projection angle between the reference end (6) and the temperature sensing end (5) on the coaxial plane is 90° to 95°.

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