[0053] Referring to the drawings showing embodiments of the present invention, the present invention will be described in more detail below. However, the present invention can be implemented in many different forms and should not be construed as being limited by the embodiments presented herein. On the contrary, these embodiments are proposed to achieve a full and complete disclosure, and to enable those skilled in the art to fully understand the scope of the present invention. In these drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity.
[0054] Reference now Figure 1-7 , The present invention provides a self-operated temperature regulator that can adjust the temperature at a fixed point, which is suitable for various controlled media such as non-corrosive liquids, gases and steams, and plays a role of temperature control in various heating systems. The self-operated temperature regulator with fixed-point temperature adjustment includes a temperature sensing component 1, a capillary component 2, a temperature regulating component 3, a power output component 4, a connecting component 5 and a cylinder component 6 which are connected in sequence.
[0055] Specific, such as figure 2 As shown, the temperature sensing component 1 includes a spiral temperature sensing rod 11, the spiral temperature sensing rod 11 is filled with a temperature sensing agent 12 with a large expansion coefficient, and the temperature sensor component 1 is inserted into the controlled medium during operation, the spiral temperature sensing rod 11 The temperature of the controlled medium is transmitted to the temperature sensing agent 12, and the temperature sensing agent 12 expands or contracts under the action of the temperature, and the volume change of the temperature sensing agent 12 is transmitted to the temperature adjustment component 3 through the capillary member 2. In this embodiment, the spiral temperature sensing rod 11 is directly loaded with temperature sensing agent to reduce the temperature transmission link, so that the temperature error is reduced, and the adjustment accuracy is greatly increased; at the same time, the spiral structure of the temperature sensing rod increases the temperature sensing The area makes the corresponding speed of the whole machine faster.
[0056] In this embodiment, as image 3 As shown, the capillary part 2 includes a capillary tube 21. One end of the capillary tube 21 is connected to the temperature sensing part 1 by argon arc welding. The capillary tube 21 is filled with a temperature sensing agent and is compatible with the temperature sensing agent in the temperature sensing agent sheath 12. Circulation. The other end of the capillary tube 21 is communicated with the temperature adjustment component 3 through a joint 22.
[0057] In this embodiment, as Figure 4 As shown, the temperature adjusting component 3 is composed of a temperature controller upper body 36, a temperature adjusting nut 31, an adjusting screw 32, an adjusting piston 35, a thrust bearing 33, and a pointer 34. Among them, a first liquid chamber 38 is provided in the upper body 36 of the temperature controller, and a temperature adjusting nut 31 is arranged on the upper end of the upper body 36 of the temperature controller; the temperature adjusting nut 31 is connected to the adjusting screw 32 through a thrust bearing 33, The lower end of the adjusting screw 32 is connected with an adjusting piston 35, which is located in the first liquid chamber 38 from the upper end of the first liquid chamber 38; wherein, the thrust bearing 33 plays a role of reducing the operating force. The upper body 36 of the temperature controller is also provided with a pointer 34, and the outer side of the upper body 36 of the temperature controller is provided with a temperature identification plate, such as Figure 5 As shown, the pointer 34 is fixedly connected to the regulating piston 35. The regulating piston 35 drives the pointer 34 to move up and down along the temperature identification plate during the up and down movement, and indicates on different temperature scales, so that the pointer 34 is guided and pointed to the set temperature. The role of.
[0058] Since the self-operated temperature regulator with fixed-point temperature adjustment provided by the present invention relies on the expansion or contraction of the temperature-sensing agent volume to adjust the temperature, the entire self-operated temperature regulator with fixed-point temperature adjustment is equipped with temperature sensing The volume capacity of the agent is the main basis for temperature adjustment. According to this principle, the present invention strictly designs and calculates the volume capacity of the temperature-sensing agent installed in the thermostat, and the design conforms to the temperature scale corresponding to the change in the volume capacity, so only the temperature adjustment component is required. 3 The upper temperature adjustment cap 31 drives the piston to move up and down to the corresponding scale, and the valve can be automatically opened or closed at the set temperature during operation to achieve precise adjustment.
[0059] In this embodiment, the lower end of the first liquid cavity is open and communicates with the capillary member 2, the specific capillary 21 is connected to the upper body 36 of the temperature controller through a joint, and the first liquid cavity below the regulating piston 35 is filled with a temperature sensitive agent, In addition, the temperature sensing agent in the first liquid cavity communicates with the temperature sensing agent in the capillary 21. The upper body 36 of the temperature controller is also provided with an opening, which is connected to the lower end of the first liquid chamber, and a plug 37 is provided on the opening, which can connect to the first liquid chamber, the capillary member 2 and the temperature sensor through the opening. Temperature sensor is injected into component 1.
[0060] In this embodiment, as Image 6 As shown, the power transmission part 4 includes a lower body 43 of the temperature controller, a push shaft 41 and a return spring 43. The lower body 43 of the temperature controller and the upper body 36 of the temperature controller are integrally arranged, and the upper end of the lower body 43 of the temperature controller is provided with a second liquid cavity 44. The second liquid cavity 44 is filled with a temperature-sensing agent and is connected with the first liquid cavity 38 and the capillary tube. Part 2 is the same. The second liquid cavity 44 is opposite and coaxial with the first liquid cavity 38, the connection between the capillary 21 and the upper body 36 of the temperature controller is relatively coaxial with the opening provided with the plug 37, the second liquid cavity 44 and the first liquid cavity 38 and the capillary 21 and the opening provided with the plug 37 are cross-distributed in a "cross" shape. The push shaft 41 is arranged on the inner side of the lower body 43 of the temperature controller through a return spring 43, the lower end of the second liquid chamber 44 is open, and the opening abuts against the upper end of the push shaft 41. The temperature-sensing agent in the second liquid chamber 44 will expand and contract with temperature when the temperature changes. When the temperature rises, the temperature-sensing agent expands and pushes the push shaft to move downward against the spring force. When the temperature decreases, the temperature-sensing The agent shrinks, the pressure applied to the upper end surface of the push shaft 41 is reduced, and the push rod 41 is reset under the action of the return spring 42.
[0061] The design of the return spring 43 on the power transmission part 4 enables the return spring 43 to rebound quickly when the temperature of the controlled medium decreases and the temperature needs to be increased quickly, which can quickly open the valve and increase the amount of heating medium (such as steam, heat transfer oil). So that the heating speed is fast.
[0062] In this embodiment, as Figure 7 As mentioned, the power transmission part 4 is connected to the valve body part through the connecting member 5. Specifically, the lower end 51 of the lower body of the temperature controller is connected to the upper end of the valve body portion 53 through a connecting nut 52. In this embodiment, the connecting nut 52 is used to facilitate disassembly and assembly. Of course, it is also connected by other means or equipment. No restriction; and the push rod 41 in the lower body of the temperature controller extends into the valve body part 53 and is connected to the valve rod 61 in the valve body part. The push rod 41 drives the valve rod 61 to move up and down during the up and down movement, thereby starting To open and close the valve of the valve body part.
[0063] According to general industrial needs, the temperature adjustment range of the present invention is set in 6 intervals: -20~50℃, 20~90℃, 40~110℃, 60-120℃, 110-180℃, 180~250℃, The corresponding temperature range is suitable for the control temperature range requirements of different working conditions. At the same time, each temperature range has a corresponding temperature label. The temperature label of different temperature ranges can be replaced on the outside of the upper body 36 of the temperature controller as needed. The following takes the most commonly used temperature range of 20~90℃ as an example to illustrate the principle of linear fixed-point adjustment:
[0064] The control temperature range is 20~90℃. When injecting the temperature sensor, first turn the adjusting nut 31 counterclockwise to drive the adjusting piston 35 to move down. After the adjusting nut 31 rotates 8 times, the pointer 34 reaches the temperature sign. The middle position of the dial points to a temperature of 55°C. The number of rotations is 8 turns, because the pitch of the adjusting screw 32 and the adjusting piston 35 is set to 1.25mm. After 8 turns, the adjusting piston has a total displacement of 1.25*8=10mm, and the temperature reaches 55°C, so the temperature of each piston rotation The change is: 35/10=3.5°C. The reason why the pointer 34 is moved to the middle position is that the temperature can be adjusted higher and lower in the middle position. The method for debugging in other temperature control zones is the same. Rotate the adjusting nut to move the pointer to the middle of the temperature indicator.
[0065] When the spiral temperature sensing rod 11 is working, it is inserted into the control medium to transmit temperature changes, and the temperature sensing agent thermally expands and contracts to produce volume changes. Therefore, the volume of the temperature sensing agent in the spiral temperature sensing rod 11 is the key to achieve linear adjustment. In this embodiment, the design volume of the spiral temperature sensing rod 11 is 120,000 mm 3 , The expansion coefficient of the temperature sensor is 9.45*10 -3. The following will take 55°C from the initial stage of commissioning as an example. When it is required to increase the temperature from 55°C to 62°C, turn the adjusting nut 31 clockwise for 2 turns. At this time, the increased temperature is just 3.5*2=7°C. The diameter of the first liquid chamber 38 where the regulating piston 35 is located is 25mm, so its cross-sectional area is S1=1/4*π*25*25=490mm 2 , The adjustment piston 35 rotates 2 times, the displacement change of the adjustment piston 35 is L=1.25*2=2.5mm, the volume change of the first liquid chamber 38 can be calculated as: ΔQ=S1*L=490*2.5=1200mm 3.
[0066] When the temperature of the controlled medium increases by 7℃, the volume expansion value of the temperature sensor in the spiral temperature sensor 11 is: Q=120000*9.45*10 -3 *7=8000mm 3. When working, the thermostat needs an output force to ensure the closing of the valve. This output force is the force generated by the increase in internal pressure caused by the volume expansion of the thermostat acting on the head of the push rod. The diameter of the putter head is 16mm, so the area of the putter head S2=1/4*π*16*16=200mm 2 , The volume expands by 8000mm when the temperature rises by 7℃ 3 , Minus the volume of the change caused by the rotation of the adjusting nut ΔQ = 1200m 3 , The remaining volume is 5800mm 3 , According to Q=S2*h=5800 mm 3 , The resulting liquid expansion height is h=5800/200=29mm, and the pressure generated by this expansion height is just used to overcome the reaction force of the return spring 43 to close the valve. Therefore, the combination of the volume capacity in the spiral temperature sensor, the diameter of the temperature regulating piston, the diameter of the push rod head and the expansion coefficient of the temperature sensor can realize the linear adjustment of the temperature. The volume of the liquid expansion can be added to the first liquid cavity. In addition to the liquid change, the rest is used to overcome the reaction force of the spring return spring and close the valve at the same time.
[0067] The present invention provides a self-operated temperature regulator that can adjust the temperature at a fixed point. The following takes the application in a specific working process as an example, and the working process is described in detail as follows:
[0068] The temperature sensing part 1 is arranged in the controlled medium, and the valve body part 6 is arranged at the inlet and outlet where hot water or steam is delivered to the controlled medium. First, according to the required temperature of the controlled medium, design and calculate the volume of the temperature-sensing agent liquid inside the temperature controller, and set the pointer 34 to the required temperature scale by rotating the adjusting screw cap 31 to achieve fixed-point adjustment; rotate clockwise The adjusting nut 31, through the adjusting screw 32, drives the adjusting piston 35 to move upwards, thereby extending the distance between the adjusting piston 35 and the lower end of the upper body 36 of the temperature controller, and the overall volume of the temperature sensor becomes larger, realizing the control Adjust the set temperature of the medium to increase; on the contrary, rotate the adjustment nut 31 counterclockwise, and through the adjustment screw 32, drive the adjustment piston 35 to move downward, thereby reducing the distance between the adjustment piston 35 and the lower end of the upper body 36 of the temperature controller , The overall volume of the temperature-sensing agent is reduced, and the adjustment of reducing the set temperature of the controlled medium is realized; thus, the present invention can set different temperature values according to needs to realize the function of fixed-point adjustment.
[0069] The temperature sensing part 1 extends into the controlled medium. When the controlled medium is at the set temperature, the temperature sensing agent is in a normal state; when the controlled medium is higher than the set temperature, the temperature sensing agent in the temperature sensing part 1 Upon thermal expansion, the changed volume of the temperature-sensing agent is transferred to the upper end surface of the push rod 41 through the capillary tube 21, and the push rod 41 is pushed to overcome the spring force to move downward, so that the valve rod moves downward to close the valve, reducing hot water or steam The amount of entry, plays a role in cooling. When the controlled medium is lower than the set temperature, the volume of the temperature-sensing agent in the temperature sensing part 1 shrinks, and the changed volume of the temperature-sensing agent is transmitted to the push rod 41 through the capillary 21, and the pressure on the upper end surface of the push rod 41 decreases. The push rod 41 is reset under the action of the return spring 42, which drives the valve rod to move upward to open the valve, increase the amount of hot water or steam entering, and heat the pipeline to increase the temperature.
[0070] In summary, the present invention provides a self-operated temperature regulator capable of adjusting temperature at a fixed point, which includes a temperature sensor component, a temperature adjustment component, a power output component and a valve body component. The temperature sensor includes a spiral temperature sensor, and the spiral temperature sensor is filled with a temperature sensor. The temperature sensor component is connected with the temperature adjustment component through a capillary tube filled with temperature sensing agent. The temperature adjustment component is composed of a temperature adjustment cap, an adjustment screw, an adjustment piston, thrust bearing, and a pointer. Through the calculation of the total volume of the temperature sensor, the adjustment screw is driven by the temperature adjustment cap to make the adjustment piston move up and down in the upper body of the temperature controller Change the volume to achieve the effect of fixed-point temperature adjustment. The power output component is composed of a push shaft and a return spring. The temperature sensing agent generates a certain force on the upper surface of the push shaft due to the temperature change of the controlled medium. Under this force, the valve is opened and closed to achieve the purpose of temperature control. .
[0071] Those skilled in the art should understand that the present invention can be implemented in many other specific forms without departing from the spirit or scope of the present invention. Although the embodiments of the present invention have been described, it should be understood that the present invention should not be limited to these embodiments, and those skilled in the art can make changes and modifications within the spirit and scope of the present invention as defined by the appended claims.
