Buffered surge tank heater

Abstract

The utility model relates to the technical field of storage tank equipment discloses buffer formula anti -water -hammer storage tank heater, including base and storage tank body, the storage tank body is installed with the inner bag, and the inner bag bottom is connected with the support column, and the water inlet pipe is connected to the inside of the inner bag, and the heating pipe is wound on the outer wall of the inner bag, and buffer formula anti -water -hammer storage tank heater still includes the buffer assembly of setting between the inner bag and the storage tank body, and the buffer assembly includes the telescopic sleeve of horizontal distribution and the spring of setting in the outside of telescopic sleeve, the utility model discloses setting the buffer assembly of comprising telescopic sleeve and spring, solved the problem that the inner bag is vulnerable to water hammer impact damage, reached the effect of using elastic deformation to absorb impact energy, and the equipment structural stability and service life were improved.

Description

Technical Field

[0001] This utility model relates to the field of storage tank protection technology, and in particular to a buffer-type water hammer resistant storage tank heater. Background Technology

[0002] In industrial production and daily life, tank heaters are widely used for the storage and heating supply of hot water. These devices include a metal tank for holding liquids and heating components attached to the tank. When in operation, external water is injected into the tank through the inlet pipe, and the heating components are powered on to transfer heat to the water flow to reach the predetermined temperature. However, this traditional tank heater faces severe challenges in terms of fluid dynamics during actual operation.

[0003] Specifically, when the valve of the water inlet pipe is suddenly opened or closed, or when the water flow rate changes drastically, the flowing water column will generate an instantaneous pressure impact on the tank wall due to inertia. This phenomenon is called water hammer or water hammer effect. During the heating process, the internal pressure fluctuation caused by the thermal expansion of water will also generate periodic stress on the tank wall. In the existing tank structure, the inner liner is rigidly fixed to the outer shell or base, lacking an effective buffering mechanism.

[0004] This rigid connection method prevents the inner tank from absorbing or dissipating the enormous kinetic energy generated by water hammer. Long-term impact and vibration will directly affect the welds and connection nodes of the inner tank, causing fatigue cracking of the welds, loosening of the pipe connections, and even deformation of the inner tank. This will not only lead to water leakage and safety accidents, but also seriously shorten the service life of the heater and increase maintenance costs.

[0005] Therefore, this utility model proposes a buffer-type anti-water hammer storage tank heater to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems existing in the buffer-type water hammer-resistant storage tank heater, such as the inability to effectively absorb water hammer impact energy due to the rigid connection between the inner tank and the outer shell, resulting in weld cracking, low reliability and short equipment life, this utility model aims to provide a buffer-type water hammer-resistant storage tank heater with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a buffer-type water hammer resistant storage tank heater, comprising: a base and a storage tank body fixedly installed on the top of the base, an inner liner installed inside the storage tank body, a plurality of support columns fixedly connected to the bottom of the inner liner, the end of the support column away from the inner liner abutting against the bottom of the inner wall of the storage tank body, and also including a water inlet pipe and a heating pipe, the water inlet pipe passing through the outer wall of the storage tank body and communicating with the interior of the inner liner, the heating pipe being spirally wound and fixed on the outer circumferential wall of the inner liner; and a buffer assembly disposed between the inner liner and the storage tank body.

[0008] The buffer assembly has the structural features of including a horizontally distributed telescopic sleeve and a spring sleeved on the outside of the telescopic sleeve. The telescopic sleeve is specifically constructed as a split structure including a fixed sleeve and a telescopic rod.

[0009] Furthermore, one end of the fixed cylinder is fixedly connected to the inner wall of the tank body, one end of the telescopic rod is fixedly connected to the outer wall of the inner liner, and the other end of the telescopic rod is slidably connected to the inside of the fixed cylinder. The two ends of the spring abut against the outer wall of the inner liner and the inner wall of the tank body, respectively, thereby forming a flexible connection between the inner liner and the tank body that can absorb horizontal vibration energy.

[0010] Preferably, a cover plate for sealing the tank body is provided at the front opening of the tank body, and the edge of the cover plate is tightly fitted to the front edge of the tank body through a pipe clamp, thereby achieving the sealing of the internal space of the tank body.

[0011] Preferably, a snap-fit ​​fastener is installed on the outside of the pipe clamp. The snap-fit ​​fastener locks and secures the connection between the pipe clamp and the cover plate by mechanical fastening, so as to facilitate quick assembly and disassembly.

[0012] Preferably, a cap is threaded onto the top of the outer wall of one end of the water inlet pipe located outside the tank body, to prevent debris from entering the inside of the water inlet pipe when it is not filled with water.

[0013] Preferably, the inner wall of the fixed cylinder is provided with a guide groove along the axial direction, and the surface of the telescopic rod is provided with a limiting block that slides with the guide groove. The telescopic rod is limited by the guide groove and can only make reciprocating sliding movements along the axial direction of the telescopic sleeve to prevent the inner liner from rotating circumferentially.

[0014] Preferably, the plurality of support columns are evenly distributed in an array on the bottom outer wall of the inner liner, and the support columns themselves have an elastic buffer structure to cooperate with the telescopic sleeve's telescopic movement, thereby providing micro-displacement compensation in the vertical direction.

[0015] Preferably, the heating tube is closely attached to the outer wall surface of the inner liner to improve heat conduction efficiency, and both ends of the heating tube extend through the outer wall of the tank body to the outside of the tank body to facilitate connection to a power source.

[0016] Preferably, the spring is a helical compression spring, and the inner diameter of the spring is larger than the outer diameter of the telescopic sleeve. The spring is in a slightly compressed state in its natural state to maintain the stability of the inner liner in its initial position.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problem that existing tank heaters are easily subjected to water hammer impacts when the inner tank is subjected to sudden changes in water flow rate or internal pressure fluctuations, resulting in weld cracking or structural deformation. It achieves the effect of efficiently absorbing impact energy by utilizing the elastic deformation of the spring and limiting the displacement direction of the inner tank to prevent shaking by utilizing the telescopic sleeve, thereby significantly improving the structural stability and service life of the equipment.

[0019] 2. This utility model solves the problems of open water inlet pipes causing water pollution and built-in heating components being difficult to maintain and prone to leakage when the water inlet is open, by setting a threaded cap at the top of the water inlet pipe and using a heating tube spirally wound around the outer wall of the inner tank and extending through the outer wall of the tank body to the outside. It achieves the effect of effective sealing and dust prevention when idle, water and electricity separation to ensure safety when heating, and facilitates external wiring and subsequent maintenance.

[0020] 3. This utility model solves the problem of cumbersome disassembly and assembly and low efficiency of inner tank maintenance caused by using multiple bolts to fasten the traditional tank head by setting a cover plate at the front opening of the tank body and using pipe clamps and buckle fixing devices for connection and locking. It achieves the effect of quickly pressing and sealing the cover plate and disassembling and opening it, which greatly shortens the time for equipment cleaning and inner tank maintenance. Attached Figure Description

[0021] Figure 1 This is a perspective view of the buffer-type water hammer-resistant storage tank heater proposed in this utility model;

[0022] Figure 2 This is a right view of the buffer-type water hammer-resistant storage tank heater proposed in this utility model;

[0023] Figure 3 This is a split view of the telescopic sleeve in the buffer-type water hammer-resistant storage tank heater proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the support column in the buffer-type water hammer-resistant storage tank heater proposed in this utility model.

[0025] Legend:

[0026] 1. Base; 2. Tank body; 3. Inlet pipe; 4. Cap; 5. Inner liner; 6. Heating tube; 7. Spring; 8. Telescopic sleeve; 9. Support column; 10. Cover plate; 11. Pipe clamp; 12. Clip fastener. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example:

[0029] Please refer to Figures 1 to 4 This utility model provides a buffer-type water-hammer-resistant storage tank heater, which aims to solve the problem in the prior art where the inner liner 5 of the storage tank is easily damaged or cracked at the joints due to water hammer during water intake or heating. Figure 1 and Figure 2As shown, the buffer-type water hammer resistant storage tank heater includes two parallel bases 1 and a storage tank body 2 fixedly mounted on top of the two bases 1 by bolts or welding. The bases 1 serve as the mounting base for the entire device to provide stable support. The storage tank body 2 serves as an outer protective shell to house the internal components and isolate them from the external environment. Inside the storage tank body 2, an inner liner 5 is installed for storing the liquid to be heated. A gap is formed between the inner liner 5 and the storage tank body 2, thus forming a double-layer tank structure. Multiple support columns 9 are fixedly connected to the bottom outer wall of the inner liner 5 in an array. The end of the support column 9 away from the inner liner 5 abuts against the bottom of the inner wall of the storage tank body 2. The support columns 9 serve to support and position the inner liner 5 in the vertical direction. Furthermore, the support column 9 itself has an elastic buffer structure to allow the inner liner 5 to undergo slight displacement when impacted. The water inlet pipe 3 passes through the outer wall of the tank body 2 and connects to the interior of the inner liner 5. The water inlet pipe 3 is used to inject external water into the interior of the inner liner 5. A cap 4 is threadedly connected to the top of the outer wall of the end of the water inlet pipe 3 located outside the tank body 2. The cap 4 is used to seal and protect the water inlet pipe 3 when it is not filled with water. The heating pipe 6 is spirally wound and fixed on the outer circumferential wall of the inner liner 5. The heating pipe 6 is close to the outer wall surface of the inner liner 5 to increase the contact area. Both ends of the heating pipe 6 pass through the outer wall of the tank body 2 and extend to the outside of the tank body 2 to connect to the power supply. The heating pipe 6 is used to generate heat after being powered on and heat the water flow inside the inner liner 5 through heat conduction.

[0030] It also includes a buffer assembly located between the inner liner 5 and the tank body 2; please refer to this for details. Figure 1 and Figure 3 The buffer assembly includes a horizontally distributed telescopic sleeve 8 and a spring 7 sleeved on the outside of the telescopic sleeve 8. The telescopic sleeve 8 specifically includes a fixed sleeve and a telescopic rod. One end of the fixed sleeve is fixedly connected to the inner wall of the storage tank body 2 by welding or bolting. The inner wall of the fixed sleeve is provided with a guide groove along the axial direction. One end of the telescopic rod is fixedly connected to the outer wall of the inner liner 5 by welding, and the other end of the telescopic rod is slidably connected to the inside of the fixed sleeve. The surface of the telescopic rod is provided with a limiting block that slides with the guide groove. The telescopic rod can reciprocate along the axial direction of the telescopic sleeve 8. The function of the telescopic sleeve 8 is to provide guiding support for the displacement of the inner liner 5 relative to the storage tank body 2 and to prevent the inner liner 5 from deflecting or tilting.

[0031] Meanwhile, spring 7 is a helical compression spring. The inner diameter of spring 7 is larger than the outer diameter of telescopic sleeve 8 so that they do not interfere with each other. The two ends of spring 7 abut against the outer wall of inner tank 5 and the inner wall of tank body 2, respectively. Spring 7 is in a slightly compressed state under natural conditions. When inner tank 5 is impacted by incoming water flow or internal pressure fluctuations, causing vibration displacement, inner tank 5 drives telescopic rod to slide in fixed cylinder. At the same time, spring 7 is compressed or stretched to produce elastic deformation. The elastic potential energy of spring 7 is used to absorb impact energy. This cooperative structure consisting of telescopic sleeve 8 as guide and spring 7 as elastic buffer ensures that inner tank 5 can effectively dissipate energy when subjected to water hammer, avoiding weld cracking or structural damage caused by rigid connection, thereby significantly improving the service life and operational safety of the equipment.

[0032] To facilitate subsequent inspection, cleaning, and replacement of damaged parts inside the inner liner 5, please refer to... Figure 1 and Figure 2 A cover plate 10 for sealing the tank body 2 is provided at the front opening. The edge of the cover plate 10 and the front edge of the tank body 2 form a closed space through a sealing fit. In order to achieve quick disassembly and fastening between the cover plate 10 and the tank body 2, a pipe clamp 11 is sleeved on the outside of the connection. The inner side of the pipe clamp 11 fits against the connection gap between the cover plate 10 and the tank body 2. A buckle fastener 12 is installed on the outside of the pipe clamp 11. The buckle fastener 12 locks the open end of the pipe clamp 11 by mechanical fastening, so that the pipe clamp 11 generates radial contraction force, thereby firmly pressing the cover plate 10 onto the tank body 2. This structure avoids the cumbersome bolt disassembly process and greatly improves maintenance efficiency. As another preferred embodiment, in order to prevent external dust and debris from entering the water inlet pipe 3 and causing water pollution when not in operation, the outer wall of the end of the water inlet pipe 3 located outside the tank body 2 is... The top is threaded with a cap 4, and the inner wall of the cap 4 is provided with a sealing gasket that matches the end of the water inlet pipe 3. The water inlet pipe 3 can be opened and closed by rotating the cap 4. In order to ensure the safety and convenience of the circuit connection, the two ends of the heating pipe 6 extend through the outer wall of the tank body 2 to the outside of the tank body 2. The heating pipe 6 is provided with an insulating seal at the wall penetration point to prevent heat loss or water leakage inside the tank body 2. The end of the heating pipe 6 extending to the outside is convenient for connecting the power cord and the temperature control device, realizing the water and electricity separation structure. In order to further cooperate with the work of the buffer component, multiple support columns 9 are evenly distributed in a rectangular or circular array at the bottom of the inner liner 5. The support columns 9 are made of rubber material with elastic deformation capability or contain an internal spring 7 structure, so that the support columns 9 can absorb vibration in multiple dimensions in conjunction with the side telescopic sleeve 8 and spring 7 while bearing the weight of the inner liner 5.

[0033] Working principle: When the buffer-type water hammer-resistant storage tank heater is in the installation stage, the operator fixes the storage tank body 2 on the base 1 and places the inner tank 5 inside the storage tank body 2. At this time, multiple support columns 9 support the bottom of the inner tank 5 at a predetermined height. Then, the telescopic sleeve 8 and spring 7 are installed. The fixed cylinder and telescopic rod of the telescopic sleeve 8 are respectively connected to the inner wall of the storage tank body 2 and the outer wall of the inner tank 5. The spring 7 is pre-compressed and installed between the inner tank 5 and the storage tank body 2 to ensure that the inner tank 5 obtains a stable initial position in a static state. After the installation is completed, the cover plate 10 is covered and the cover plate 10 is quickly locked and sealed using the pipe clamp 11 and the buckle fixing device 12. Finally, the water inlet pipe 3 and the heating pipe 6 are connected to put the entire device into a ready-to-work state.

[0034] When the device starts to inject water, the operator unscrews the cap 4 on the top of the water inlet pipe 3. The external water source is injected into the inner tank 5 through the water inlet pipe 3. As the water is continuously injected, if the water flow rate changes abruptly or the external valve is suddenly closed, the water flow will generate pressure fluctuations in the pipe and the inner tank 5, i.e., water hammer effect. At this time, the impact force acts on the wall of the inner tank 5 in an attempt to push the inner tank 5 to move.

[0035] When the inner liner 5 is subjected to the above impact force and has a slight displacement tendency, the telescopic rod in the telescopic sleeve 8 connected to the outer wall of the inner liner 5 begins to slide relative to the fixed cylinder fixed on the tank body 2. The limiting block on the surface of the telescopic rod moves in the guide groove. This sliding fit structure forcibly limits the displacement direction of the inner liner 5 to only be along the horizontal axis, thereby effectively preventing the inner liner 5 from shaking, tilting or rotating in a disorderly manner, and avoiding rigid collision between the inner liner 5 and the tank body 2.

[0036] At the same time, the spring 7 sleeved on the outside of the telescopic sleeve 8 quickly responds to the displacement of the inner liner 5. When the inner liner 5 moves towards the inner wall of the tank body 2, the spring 7 is further compressed to generate elastic resistance. When the inner liner 5 rebounds away from the tank, the spring 7 provides tension or restoring force. The spring 7 absorbs and dissipates the kinetic energy brought by the water flow impact through its own elastic deformation, transforming the violent rigid impact into flexible oscillation and rapidly attenuating it. The elastic buffer structure at the bottom of the support column 9 also works in sync to perform micro-deformation buffering in the vertical direction, jointly maintaining the dynamic balance of the inner liner 5.

[0037] When the water filling is completed and the heating stage begins, the power is turned on and the heating tube 6, which is spirally wound around the outer wall of the inner liner 5, starts to work and generates heat. The heat is conducted to the metal wall of the inner liner 5 through the contact surface and then heats the water stored inside. If the internal pressure fluctuates due to the expansion of the water caused by the heat during the heating process, the above-mentioned buffer components will also act in the same way to eliminate the structural stress caused by the pressure fluctuation and protect the welds and joints of the inner liner 5 from damage.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A buffer-type water hammer resistant storage tank heater, comprising: The base (1) and the tank body (2) fixedly installed on the top of the base (1) are provided. The tank body (2) is equipped with an inner liner (5). The bottom of the inner liner (5) is fixedly connected with a plurality of support columns (9). The end of the support column (9) away from the inner liner (5) abuts against the bottom of the inner wall of the tank body (2). Water inlet pipe (3), the water inlet pipe (3) passes through the outer wall of the tank body (2) and connects to the interior of the inner liner (5); and heating tube (6), which is spirally wound and fixed on the outer circumferential wall of the inner liner (5); Its features are, The buffer-type water hammer-resistant storage tank heater also includes a buffer assembly disposed between the inner liner (5) and the storage tank body (2); The buffer assembly includes a horizontally distributed telescopic sleeve (8) and a spring (7) sleeved on the outside of the telescopic sleeve (8). The telescopic sleeve (8) includes a fixed sleeve and a telescopic rod. One end of the fixed sleeve is fixedly connected to the inner wall of the tank body (2), one end of the telescopic rod is fixedly connected to the outer wall of the inner liner (5), and the other end of the telescopic rod is slidably connected to the inside of the fixed sleeve. The two ends of the spring (7) abut against the outer wall of the inner liner (5) and the inner wall of the tank body (2), respectively.

2. The buffer-type water hammer resistant storage tank heater according to claim 1, characterized in that, A cover plate (10) is provided at the front opening of the storage tank body (2), and the edge of the cover plate (10) is attached to the front edge of the storage tank body (2) through a pipe clamp (11).

3. The buffer-type water hammer resistant storage tank heater according to claim 2, characterized in that, A buckle fastener (12) is installed on the outside of the pipe clamp (11), and the buckle fastener (12) locks and fixes the connection between the pipe clamp (11) and the cover plate (10).

4. The buffer-type water hammer resistant storage tank heater according to claim 1, characterized in that, The top of the outer wall of the water inlet pipe (3) located outside the tank body (2) is threaded with a cap (4).

5. The buffer-type water hammer resistant storage tank heater according to claim 1, characterized in that, The inner wall of the fixed cylinder is provided with a guide groove along the axial direction, and the surface of the telescopic rod is provided with a limiting block that slides with the guide groove. The telescopic rod reciprocates along the axial direction of the telescopic sleeve (8).

6. The buffer-type water hammer resistant storage tank heater according to claim 1, characterized in that, Multiple support columns (9) are evenly distributed in an array on the bottom outer wall of the inner liner (5), and the support columns (9) themselves have an elastic buffer structure to cooperate with the telescopic sleeve (8) telescopic movement.

7. The buffer-type water hammer resistant storage tank heater according to claim 1, characterized in that, The heating tube (6) is in close contact with the outer wall surface of the inner liner (5), and both ends of the heating tube (6) extend through the outer wall of the tank body (2) to the outside of the tank body (2).

8. The buffer-type water hammer resistant storage tank heater according to claim 1, characterized in that, The spring (7) is a helical compression spring (7), and the inner diameter of the spring (7) is larger than the outer diameter of the telescopic sleeve (8). The spring (7) is in a slightly compressed state in its natural state.

Images