Temperature adjusting type damper and application method thereof

Abstract

The invention relates to the technical field of vibration and noise control, in particular to a temperature adjusting type damper and an application method thereof. The damper comprises a damping cylinder, a damping rod and damping liquid, the damping cylinder contains the damping liquid, the damping rod is partially inserted into the damping liquid, the damping cylinder is fixed to a base structure, the damping rod is connected with a controlled object, the damper further comprises a temperature adjusting component, the temperature adjusting component comprises a shell, an inner core and a temperature control module, the shell is in direct contact with the damping liquid, and the inner core is arranged in the shell. The inner core is arranged in the shell and electrically connected with the temperature control module. According to the method, the temperature of the damping liquid in the damper is adjusted on the engineering site through the temperature adjusting component, and therefore it is guaranteed that the damper works in the preset state. The temperature adjusting type damper further has the advantages of being simple in structure, low in cost, high in reliability, convenient to apply, wide in application range and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration and noise control, and in particular to a temperature-regulating damper for controlling vibration of equipment such as machinery and pipelines. Background Art

[0002] A viscous damper typically consists of an upper housing, a lower housing, a damping rod, and a damping fluid. The lower housing contains the damping fluid and is connected to the base structure. The upper housing is connected to the damping rod and the controlled structure, with the damping rod immersed in the damping fluid. During operation, the controlled structure, through the upper housing, drives the damping rod to reciprocate in the damping fluid. The damping rod's shearing action on the damping fluid dissipates vibration energy. The damping fluid's viscosity determines the damping performance of the damper, which is often significantly affected by temperature. As the temperature decreases, the damping fluid's viscosity increases; as the temperature rises, the viscosity decreases. For example, Chinese Patent Publication No. CN112267592A discloses a viscous damper with swingable umbrella-shaped blades. Therefore, temperature is a major factor that must be considered when using a viscous damper. Furthermore, during operation, the viscous damper continuously converts the vibration energy of the controlled structure into heat, which in turn causes the damping fluid temperature to rise. For some temperature-sensitive damping fluids, this problem can also significantly cause performance changes in the viscous damper.

[0003] In summary, the market urgently needs a damper that can regulate its own temperature. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a temperature-adjustable damper and its application method, which can adjust the damping fluid temperature as needed on-site to achieve the goal of a specific working state. The temperature-adjustable damper also has the characteristics of simple structure, low cost, and easy adjustment.

[0005] The technical solution adopted in the present invention is as follows: A temperature-regulating damper includes a damping cylinder, a damping rod and a damping fluid. The damping cylinder contains the damping fluid, the damping rod is partially inserted into the damping fluid, the damping cylinder is fixed to a base structure, and the damping rod is connected to a controlled object. The present invention also includes a temperature regulating component, which includes a shell, a core and a temperature control module. The shell is in direct contact with the damping fluid, the core is arranged inside the shell, and the core is electrically connected to the temperature control module.

[0006] Furthermore, the shell of the temperature regulating component is a core rod arranged in the damping cylinder, and the core is a heating tube; the core rod is hollow, with a closed top and an open bottom; the heating tube is installed in the core rod, and an electrical interface of the heating tube is provided on the damping cylinder.

[0007] Furthermore, the temperature regulating component also includes a temperature sensor, which is arranged in the damping cylinder and electrically connected to the temperature control module.

[0008] Furthermore, the shell of the temperature regulating component is a sleeve, a hollow interlayer is provided on the wall of the sleeve, the core is a liquid medium and is provided in the interlayer, and accordingly, an inlet interface and an outlet interface are provided on the shell. The temperature regulating component also includes a liquid storage tank, a liquid temperature regulating module and a liquid delivery module, and a liquid pipeline is provided between the damping cylinder and the temperature control module.

[0009] Furthermore, the sleeve is integrated with the cylinder wall of the damping cylinder.

[0010] Furthermore, the shell of the temperature regulating component is a sleeve, a hollow interlayer is provided on the wall of the sleeve, the core is a semiconductor heating element and is provided in the interlayer, the sleeve is fixed on the damping cylinder, and the damping cylinder is provided with an electrical interface of the semiconductor heating element.

[0011] In addition, the present invention further provides three different application methods of a temperature-adjustable damper.

[0012] A first method for applying a temperature-regulating damper includes the following steps: Step 1: Determine the allowable continuous heating time t0, the damping fluid temperature target value T0, and the deviation value ΔT below the damping fluid temperature target value based on the temperature characteristics of the damping fluid, the damper structure, and the performance of the heating tube; Step 2: Measure the damping fluid temperature T and calculate whether T0-T is greater than ΔT. When T0-T≥ΔT, start the heating tube to start heating, calculate the continuous heating time t, and monitor the damping fluid temperature T; Step 3: When at least one of the conditions t=t0 or T=T0 is met, stop heating; Step 4: If t=t0 in step 3, monitor the trend of T value change. When T passes the rising stage and starts to fall, jump to step 2. If T=T0 in step 3, jump to step 2.

[0013] The second method for applying the temperature-adjustable damper includes the following steps: Step 1: Determine the damping fluid temperature target value T0 and the deviation value ΔT below the damping fluid temperature target value according to the temperature characteristics of the damping fluid; Step 2: The temperature control module sets the target temperature to T0, measures the damping fluid temperature T, and calculates whether |T0-T| is greater than ΔT. When |T0-T|≥ΔT, the liquid delivery module is started to circulate the liquid medium between the interlayer, the liquid pipe, and the liquid storage tank, and the damping fluid temperature T is monitored; Step 3: When T=T0, the liquid delivery module stops delivering liquid, and the liquid temperature control module monitors and maintains the liquid temperature at T0; Step 4: Go to step 2.

[0014] A third method for applying a temperature-adjustable damper includes the following steps: Step 1: Determine the damping fluid temperature target value T0 and the deviation value ΔT below the damping fluid temperature target value according to the temperature characteristics of the damping fluid; Step 2: The liquid temperature control module sets the target temperature to T0, measures the damping liquid temperature T, and calculates whether |T0-T| is greater than ΔT. When |T0-T|≥ΔT, the semiconductor heating element is started to cool or heat the semiconductor heating element and monitor the damping liquid temperature T; Step 3: When T=T0, stop starting the semiconductor heating element and then jump to step 2.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention uses a temperature regulating component to adjust the temperature of the damping fluid in the damper at the engineering site, thereby ensuring that the damper works in a predetermined state.

[0016] (2) When the temperature regulating component is provided with a sleeve structure with an interlayer, liquid medium or semiconductor heating elements can be used for temperature adjustment, which can realize both heating and cooling functions, effectively dealing with the impact of excessively high and low ambient temperatures on the damper, and also dealing with the problem of the damping fluid self-heating affecting the damping performance when the damper is continuously working. In addition, at this time, there is no power input to the damper body or only a low-voltage power supply is input, so the electrical safety performance is more guaranteed.

[0017] (3) The temperature-adjustable damper of the present invention also has the characteristics of simple structure, low cost, high reliability, convenient application and wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the temperature-adjustable damper of the present invention in Example 1.

[0019] Figure 2 Schematic diagram of the structure of the temperature-adjustable damper of the present invention in Example 2.

[0020] Figure 3 This is a schematic structural diagram of the temperature-adjustable damper of the present invention in Example 3. DETAILED DESCRIPTION

[0021] Example 1 like Figure 1As shown, the temperature-regulating damper in this embodiment includes a damping cylinder 1, a damping rod 2 and a damping fluid 3, and also includes a temperature regulating component, which includes a shell 4, a core 5, a temperature control module 6, a temperature sensor 7, an electrical interface 8 and a cable 9. The shell 4 is a core rod arranged in the damping cylinder, and the core rod is hollow, with a closed top and an open bottom. The core 5 is a heating tube, which is installed in the core rod. The shell 4 is in direct contact with the damping fluid 3, the damping cylinder 1 contains the damping fluid 3, the damping rod 2 is partially inserted into the damping fluid 3, and an electrical interface 8 is provided on the damping cylinder 1. The core 5 and the temperature sensor 7 are electrically connected to the temperature control module 6 through the electrical interface 8 and the cable 9.

[0022] In this embodiment, the core 5 is a heating tube, which is a resistance-type heating element. When powered on, it generates heat internally and radiates heat to the outside through the outer shell. In actual applications, its structure and electrical performance parameters need to be specifically determined and designed according to actual working conditions. Its specific structural form and performance parameters will not be described in detail here. The temperature sensor 7 can be various types of temperature measuring elements such as thermal resistors and thermocouples. The temperature control module 6 can be a basic temperature measurement and temperature control device, or a temperature controller with PLC or single-chip microcomputer as the core. As long as it has the functions of temperature measurement and heating tube power supply control, it will not be given examples one by one here. When used, the damping cylinder 1 is fixed to the basic structure through the bottom plate 11, and the damping rod 2 is connected to the controlled object through the top plate 21. The structural form of the bottom plate 11 and the top plate 21 will not be described in detail here.

[0023] Shell 4 is a core rod positioned within the damping cylinder. The core rod is hollow, with a closed top and an open bottom. It houses the heating tube and is in direct contact with the damping fluid. This structural design serves several purposes: First, the core rod is located at the center of the damping cylinder and in direct contact with the damping fluid, allowing the inner wall of the damping rod to shear the damping fluid, thereby enhancing the damping performance of the damper. Second, it transfers heat from the heating tube directly to the damping fluid. Third, it prevents the heating tube from directly contacting the damping fluid, preventing damage to the damping fluid from the high temperature on the heating tube surface. Fourth, it facilitates maintenance and replacement of the heating tube, avoiding the effects of disassembly and assembly on the damping fluid. Because the service life of a heating tube is currently measured in hours, while the lifespan of the damping fluid and damper is measured in years, the heating tube inevitably requires frequent maintenance and replacement over the lifespan of a temperature-controlled damper. Furthermore, the damping fluid is typically viscous and easily adheres, making it difficult to clean if it leaks. Therefore, to prevent leaks at the root, it is essential to isolate the heating tube from the damping fluid.

[0024] The application method of the temperature-adjustable damper in this embodiment includes the following steps.

[0025] Step 1: Determine the allowable continuous heating time t0, the damping fluid temperature target value T0, and the deviation value ΔT below the damping fluid temperature target value based on the temperature characteristics of the damping fluid, the damper structure, and the performance of the heating tube. Step 2: Measure the damping fluid temperature T and calculate whether T0-T is greater than ΔT. When T0-T≥ΔT, start the heating tube to start heating, calculate the continuous heating time t, and monitor the damping fluid temperature T. Step 3: Stop heating when at least one of the conditions t=t0 or T=T0 is met. Step 4: If in step 3, t=t0, monitor the trend of the T value change. When T passes the rising stage and begins to decline, jump to step 2 to execute. If in step 3, T=T0, jump to step 2 to execute.

[0026] Both time control and temperature control are used to control the start and stop of heating. This is to prevent localized overheating of the damping fluid. During the heating process, heat diffuses from the core rod to the surrounding area, resulting in uneven damping fluid temperature. The surface temperature of the heating element is high during operation, while the damping fluid conducts heat slowly. This objective factor causes heat accumulation on the core rod surface and in the immediate vicinity, leading to excessively high damping fluid temperatures and even boiling in these areas. An effective solution to this problem is to control the duration of the heating element's operation to reduce heat accumulation around the core rod. Therefore, in practical applications, a parameter called the allowable continuous heating time, t0, is set. The specific value of t0 depends on the damping fluid's temperature characteristics, the damper structure (core rod size, temperature sensor location, etc.), and the performance of the heating element (power, surface area, etc.). It is recommended to determine this through actual product testing. This method is primarily used when the heating function is first activated and the damping fluid temperature, T, differs significantly from the target damping fluid temperature, T0. When heating is stopped due to reaching the allowed continuous heating time t0, the heat accumulated on the core rod surface and surrounding areas will continue to be transferred to the surrounding areas, so the temperature sensor will continue to heat up until the damping fluid temperature in the damping cylinder reaches a uniform temperature. At this time, the damping fluid temperature at the edge of the damping cylinder cavity begins to drop first. This change can be used to monitor that the damping fluid temperature has become uniform, and heating can be continued.

[0027] At this time, through time control, the temperature-regulated damper is intermittently heated, so that the temperature rises step by step within a reasonable range, which can better exert the performance of the damper and protect the damping fluid from damage.

[0028] The temperature-adjustable damper in this embodiment utilizes an adjusting screw and a locking nut, using the movement of the screw to adjust the depth of the damping rod's insertion into the damping fluid, enabling on-site adjustment of the damper's damping performance. This device offers high adjustment accuracy, a simple structure, low cost, ease of use, and reliable performance.

[0029] Example 2 like Figure 2 As shown, the temperature-regulating damper in this embodiment includes a damping cylinder 1, a damping rod 2 and a damping fluid 3, and also includes a temperature regulating component. The temperature regulating component includes a shell, a core, a temperature control module 6, a temperature sensor 7, an electrical interface 8 and a cable 9. The temperature regulating component also includes a liquid storage tank 61, a liquid temperature regulating module 62 and a liquid delivery module 63. The shell is a sleeve integrated with the cylinder wall of the damping cylinder 1, and a hollow interlayer is provided on the cylinder wall of the sleeve. The core 5 is a liquid medium and is provided in the interlayer of the sleeve. An inlet interface 51 and an outlet interface 52 are provided on the sleeve. A liquid pipeline 53 is provided between the damping cylinder 1 and the temperature control module 6. The sleeve is in direct contact with the damping fluid 3, the damping cylinder 1 contains the damping fluid 3, the damping rod 2 is partially inserted into the damping fluid 3, and the temperature sensor 7 is electrically connected to the temperature control module 6 through a cable 9.

[0030] The liquid medium can be a variety of types, such as thermal oil, antifreeze, and water. Antifreeze is used in this embodiment, and its specific specifications and models are not described in detail here. The temperature control module, liquid storage tank, liquid temperature adjustment module, and liquid delivery module can be integrated into a single unit, as long as they can achieve the functions of temperature control, transmission, and storage of the liquid. The specific structures are not described here one by one. It should be noted that the liquid temperature adjustment module has both heating and cooling functions for the liquid medium, thereby enabling the temperature-regulating damper in this embodiment to heat and cool the damping fluid.

[0031] The application method of this structural form is as follows, including the following steps: Step 1: Determine the damping liquid temperature target value T0 and the deviation value ΔT below the damping liquid temperature target value based on the temperature characteristics of the damping fluid; Step 2: The temperature control module sets the target temperature to T0, measures the damping fluid temperature T, and calculates whether |T0-T| is greater than ΔT. When |T0-T| ≥ ΔT, the liquid delivery module is activated to circulate the liquid medium between the interlayer, the liquid pipe, and the liquid storage tank, and monitor the damping fluid temperature T; Step 3: When T = T0, the liquid delivery module stops delivering liquid, and the liquid temperature control module monitors and maintains the liquid temperature at T0; Step 4: Jump to Step 2 for execution.

[0032] The temperature-regulating damper in this embodiment first controls the temperature of the liquid medium outside the damper body, then transports the liquid medium to the damper body. Heat exchange is performed within the housing of the temperature-regulating component to achieve temperature control of the damping fluid. The advantages of this technical solution are: first, the liquid medium temperature can be precisely and reasonably controlled, enabling more accurate temperature regulation and preventing excessively high or low temperatures from contacting the damping fluid, thus preventing drastic temperature fluctuations during the temperature control process. Second, there is no power input to the damper body, thus avoiding electrical safety issues. Third, the ability to regulate the temperature of the damping fluid by increasing or decreasing its temperature broadens the application range of temperature-regulating dampers.

[0033] Example 3 like Figure 3 As shown, the difference between this embodiment and the second embodiment is that the temperature regulating component includes a shell, a core, a temperature control module 6, a temperature sensor 7, an electrical interface 8 and a cable 9. The shell 4 is a sleeve, and a hollow interlayer is provided on the wall of the sleeve. The core 5 is a semiconductor heating element and is provided in the interlayer of the sleeve. The temperature sensor 7 and the semiconductor heating element are electrically connected to the temperature control module 6 through the electrical interface 8 and the cable 9.

[0034] The semiconductor heating element has heating and cooling functions. The specific functional conversion is adjusted and controlled by the temperature control module. The specific technology and structural scheme of this part of the function will not be described in detail here.

[0035] The temperature-regulating damper in this embodiment includes the following steps when used: Step 1: Determine the damping liquid temperature target value T0 and the deviation value ΔT below the damping liquid temperature target value based on the temperature characteristics of the damping liquid; Step 2: Set the target temperature to T0 in the liquid temperature control module, measure the damping liquid temperature T, and calculate whether |T0-T| is greater than ΔT. When |T0-T|≥ΔT, start the semiconductor heating element to cool or heat the semiconductor heating element and monitor the damping liquid temperature T; Step 3: When T=T0, stop starting the semiconductor heating element and then jump to step 2 for execution.

[0036] The advantages of the temperature-regulating damper in this embodiment include the following aspects: cooling or heating is performed through semiconductor elements, only low-voltage power is input to the damper body, electrical safety is more reliable, and the switching of the hot and cold modes of the semiconductor heating elements is more convenient and quick.

Claims

1. A temperature-adjustable damper comprising a damping cylinder, a damping rod, and a damping fluid, wherein the damping cylinder contains the damping fluid, the damping rod is partially inserted into the damping fluid, the damping cylinder is fixed to a base structure, and the damping rod is connected to a controlled object, characterized in that: It also includes a temperature regulating component, which includes a shell, a core and a temperature control module. The shell is in direct contact with the damping fluid, the core is arranged inside the shell, and the core is electrically connected to the temperature control module.

2. The temperature-adjustable damper according to claim 1, wherein: The shell of the temperature regulating component is a core rod arranged in the damping cylinder, and the core is a heating tube; the core rod is hollow, with a closed top and an open bottom; the heating tube is installed in the core rod, and an electrical interface of the heating tube is provided on the damping cylinder.

3. The temperature regulating damper according to claim 1, wherein: The temperature regulating component further includes a temperature sensor, which is arranged in the damping cylinder and electrically connected to the temperature control module.

4. The temperature-adjustable damper according to claim 1, wherein: The shell of the temperature regulating component is a sleeve, and a hollow interlayer is provided on the wall of the sleeve. The core is a liquid medium and is arranged in the interlayer. Accordingly, an inlet interface and an outlet interface are provided on the shell. The temperature regulating component also includes a liquid storage tank, a liquid temperature regulating module and a liquid delivery module. A liquid pipeline is provided between the damping cylinder and the temperature control module.

5. The temperature-adjustable damper according to claim 4, wherein: The sleeve is integrated with the cylinder wall of the damping cylinder.

6. The temperature regulating damper according to claim 1, wherein: The shell of the temperature regulating component is a sleeve, a hollow interlayer is provided on the wall of the sleeve, the core is a semiconductor heating element and is provided in the interlayer, the sleeve is fixed on the damping cylinder, and the damping cylinder is provided with an electrical interface of the semiconductor heating element.

7. An application method of a temperature-adjustable damper, using the temperature-adjustable damper according to claim 2, characterized in that: The following steps are involved: Step 1: Determine the allowable continuous heating time t0, the damping fluid temperature target value T0, and the deviation value ΔT below the damping fluid temperature target value based on the temperature characteristics of the damping fluid, the damper structure, and the performance of the heating tube; Step 2: Measure the damping fluid temperature T and calculate whether T0-T is greater than ΔT. When T0-T≥ΔT, start the heating tube to start heating, calculate the continuous heating time t, and monitor the damping fluid temperature T; Step 3: When at least one of the conditions t=t0 or T=T0 is met, stop heating; Step 4: If t=t0 in step 3, monitor the trend of T value change. When T passes the rising stage and starts to fall, jump to step 2. If T=T0 in step 3, jump to step 2.

8. An application method of a temperature-adjustable damper, using the temperature-adjustable damper according to claim 4, characterized in that: The following steps are involved: Step 1: Determine the damping fluid temperature target value T0 and the deviation value ΔT below the damping fluid temperature target value according to the temperature characteristics of the damping fluid; Step 2: The temperature control module sets the target temperature to T0, measures the damping fluid temperature T, and calculates whether |T0-T| is greater than ΔT. When |T0-T|≥ΔT, the liquid delivery module is started to circulate the liquid medium between the interlayer, the liquid pipe, and the liquid storage tank, and the damping fluid temperature T is monitored; Step 3: When T=T0, the liquid delivery module stops delivering liquid, and the liquid temperature control module monitors and maintains the liquid temperature at T0; Step 4: Go to step 2.

9. An application method of a temperature-adjustable damper, using the temperature-adjustable damper according to claim 6, characterized in that: The following steps are involved: Step 1: Determine the damping fluid temperature target value T0 and the deviation value ΔT below the damping fluid temperature target value according to the temperature characteristics of the damping fluid; Step 2: The liquid temperature control module sets the target temperature to T0, measures the damping liquid temperature T, and calculates whether |T0-T| is greater than ΔT. When |T0-T|≥ΔT, the semiconductor heating element is started to cool or heat the semiconductor heating element and monitor the damping liquid temperature T; Step 3: When T=T0, stop starting the semiconductor heating element and then jump to step 2.

Images