Saturated water tank type heat supply system
By using phase change material zones to wrap the steam supply/discharge pipes in the heating system, the quality reduction problem caused by pressure and temperature changes during steam transport is solved, and the steam quality and output are improved, ensuring the stability and safety of the heating system.
Patent Information
- Application Number
- CN202421761901.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-24
AI Technical Summary
During the steam transportation process, the existing heating system has a rapid change in pressure and temperature, resulting in a decrease in the quality of steam, resulting in a large amount of condensation water, affecting the heating efficiency and safety.
The phase change material area is adopted, which is located vertically above the heat storage tank and wraps the steam supply/discharge pipe. Through the heat replenishment effect of the phase change material, the steam pressure and temperature change rate can be slowed down and flash evaporation will be avoided.
It effectively improves steam quality and output, reduces the generation of condensate, and ensures the stable and safe operation of the heating system.
Smart Images
Figure CN222925587U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of heat supply, and more specifically, to a saturated water tank type heat supply system. Background Art
[0002] With the continuous increase in the demand for heat production, it is particularly important to ensure the normal operation of heat equipment. Poor steam can damage heat equipment and endanger the safety of users. To provide good steam quality to users, purer and more steam needs to be provided. The technology of using steam for heat supply is to first fill a certain mass of demineralized water into a heat storage tank, and then fill high-temperature and high-pressure steam to heat and pressurize the water into high-temperature saturated water. The heat is stored through the saturated water. When reaching the user side, due to the lower pressure on the user side, high-temperature and high-pressure steam is released through the pressure difference between the user side and the tank to meet the gas consumption needs of users.
[0003] Steam needs to be transported to the user end. Currently, the mobile heat supply devices in use include a water storage tank and a transportation device. As Figure 1 shown, the water storage tank 2 is fixed on the truck 1 through the base 3. An inlet steam / inlet water pipe 4 is connected to the water storage tank 2. When first used, demineralized water can be added into the tank through the inlet steam / inlet water pipe, and the water level gauge 9 is used to observe whether the water volume in the tank meets the requirements. The inlet steam / inlet water pipe is connected to a gas distribution pipe 5 inside the tank, and a plurality of nozzles are evenly arranged on the gas distribution pipe to make the water vapor mixture uniform when subsequent steam is filled. There is a gas supply / discharge pipe 6 at the top of the heat storage tank to transport steam to the user end, a hot water outlet pipe 7 is connected to the bottom to transport hot water to the user end, and a sewage discharge pipe 8 discharges dirt.
[0004] However, the heat and steam volume stored in the water storage tank are getting higher and higher. Affected by the internal temperature change of the tank body, when the valve is opened at the user side, the pressure difference at both ends of the gas supply / discharge pipe causes the pressure in the tank to decrease, and the high-temperature saturated water flashes, turning into a part of saturated steam and saturated liquid under low pressure, and a large amount of condensed water is generated due to the rapid temperature drop, resulting in a decrease in steam quality. Summary of the Utility Model
[0005] In view of the above problems, this application provides a saturated water tank type heat supply system to improve steam quality.
[0006] To achieve the above purpose, the following specific solutions are proposed:
[0007] A saturated water tank type heat supply system, comprising:
[0008] A phase change material area, a gas supply / discharge pipe, and a heat storage tank storing high-temperature saturated water, wherein the phase change material area contains phase change materials;
[0009] The heat storage tank is horizontally placed in the heat supply system, and the phase change material area is fixed vertically above the heat storage tank;
[0010] The front end of the steam supply / discharge pipe is connected to the heat storage tank, and the pipe body of the steam supply / discharge pipe is wrapped by the phase change material;
[0011] The phase change material is used to supplement heat to the steam supply / discharge pipe when the saturated water tank heating system releases steam to the user side through the steam supply / discharge pipe, so as to slow down the change speed of steam pressure and temperature change speed in the steam supply / discharge pipe.
[0012] Preferably, the saturated water tank heating system further includes a transportation device, the transportation device is equipped with a fixing bracket, and the heat storage tank is fixed on the transportation device through the fixing bracket;
[0013] The phase change material is also used to absorb the heat generated by the transportation and heating of the tank body of the heat storage tank when the transportation device transports the tank body of the heat storage tank.
[0014] Preferably, the transportation device is further equipped with a container, and the phase change material area and the heat storage tank are encapsulated in the container.
[0015] Preferably, the saturated water tank heating system further includes a steam inlet / water inlet pipe, and the steam inlet / water inlet pipe is connected to the heat storage tank to input demineralized water into the heat storage tank;
[0016] The phase change material is also used to absorb the heat generated by the heating of the tank body of the heat storage tank during the process of heating the demineralized water to high-temperature saturated water.
[0017] Preferably, the saturated water tank heating system further includes two end heads, and the two end heads are respectively installed at the head end and the tail end of the heat storage tank.
[0018] Preferably, the saturated water tank heating system further includes a liquid level gauge to monitor the real-time height of the high-temperature saturated water in the heat storage tank.
[0019] Preferably, the heat storage tank has a blowdown port, and the blowdown port is used to release the dirt in the tank body of the heat storage tank.
[0020] Preferably, the applicable temperature range of the phase change material is 180°C to 250°C.
[0021] Preferably, the shape of the phase change material area is square.
[0022] With the above technical solution, the saturated water tank type heating system of the present application adopts a phase change material, which is located vertically above the heat storage tank and wraps the steam supply / discharge pipe. Thus, when the heating system releases steam to the user side through the steam supply / discharge pipe, the phase change material can supplement heat to the steam supply / discharge pipe to slow down the change speed of the steam pressure and temperature in the steam supply / discharge pipe, making the output steam pressure and temperature change smoothly, reducing the flashing phenomenon of sudden pressure drop, and improving the steam quality. At the same time, since the phase change material supplements heat to the steam supply / discharge pipe, the generation of condensed water is reduced, and the steam quality and output are improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:
[0024] Figure 1 FIG. 1 is a schematic structural diagram of a mobile heating device provided for the background art of the present application;
[0025] Figure 2 FIG. 2 is a front view of the schematic structure of a saturated water tank type heating system provided for an embodiment of the present application;
[0026] Figure 3 FIG. 3 is a side view of the schematic structure of a saturated water tank type heating system provided for an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0028] An embodiment of the present application provides a saturated water tank type heating system, as Figure 2 and 3 shown, the saturated water tank type heating system may include:
[0029] A phase change material area, a steam supply / discharge pipe, and a heat storage tank storing high-temperature saturated water.
[0030] Among them, the heat storage tank is cylindrical. Since it needs to be transported, the heat storage tank needs to be placed horizontally in the heating system so that one end of the heat storage tank faces the front of the vehicle and the other end faces the rear of the vehicle.
[0031] The phase change material area can be fixed directly above the heat storage tank, in close contact with the tank wall of the heat storage tank, so as to absorb the heat of the tank wall of the heat storage tank.
[0032] The phase change material area contains phase change material. The shape of the phase change material area can be designed into various shapes. For example, it can be designed as a square, which is convenient for welding and fixing the filling material.
[0033] Specifically, the phase change material refers to a substance that changes its physical state without changing temperature and can provide latent heat. The process of changing physical properties is called the phase change process, during which the phase change material will absorb or release a large amount of latent heat. The phase change material used in the saturated water tank heating system can be in a solid state at normal temperature, gradually change to a liquid state when absorbing heat to the phase change temperature, and return to a solid state after releasing heat. When the temperature does not exceed the limit heating temperature of the phase change material, the phase change material can be recycled. The applicable temperature range of the phase change material used in the saturated water tank heating system can be 180°C to 250°C, so the phase change material can be recycled within this applicable temperature range.
[0034] The steam supply / discharge pipe represents a pipe used for steam supply or discharge. Considering that the steam supply and discharge of the heat accumulator are not used simultaneously, the steam supply pipe and the steam discharge pipe are combined into one pipe for use.
[0035] Specifically, the front end of the steam supply / discharge pipe is connected to the heat storage tank, so as to extract the high-temperature saturated water in the heat storage tank. The pipe body of the steam supply / discharge pipe is wrapped by the phase change material, so that the steam supply / discharge pipe can be fully heated by the phase change material.
[0036] When the saturated water tank heating system supplies steam to the user side, the saturated water tank heating system needs to release steam to the user side through the steam supply / discharge pipe. At this time, the phase change material wrapping the steam supply / discharge pipe can heat or supplement heat to the steam supply / discharge pipe, the steam pressure changes gently, reducing the phenomenon of sudden steam pressure drop, and the temperature change slows down, so that the temperature of the high-temperature saturated water will not drop sharply, reducing the generation of condensed water, thereby providing more steam volume and higher steam quality.
[0037] The saturated water tank heating system provided in this embodiment adopts a phase change material, and the phase change material is located directly above the heat storage tank and wraps the steam supply / discharge pipe. Thus, when the heating system releases steam to the user side through the steam supply / discharge pipe, the phase change material can heat the steam supply / discharge pipe to slow down the steam pressure change speed and temperature change speed in the steam supply / discharge pipe, making the output steam pressure and temperature change gently, reducing the flashing phenomenon of sudden pressure drop and the generation of condensed water, and improving the steam quality and output.
[0038] In some embodiments of the present application, the saturated water tank heating system mentioned in the foregoing embodiments may further include a transportation device, and the transportation device may be equipped with a fixing bracket.
[0039] Specifically, as Figure 2 shown, the transportation device can be equipped with 6 fixing brackets, Figure 2 3 in the view and Figure 2 3 in the back view of the view. The heat storage tank can be fixed on the transportation device through the fixing brackets to stably install the heat storage tank.
[0040] On this basis, the phase change material can absorb the heat of the tank body heated during the transportation of the heat storage tank by the transportation device.
[0041] It can be understood that during the transportation process of the transportation device, the tank body of the heat storage tank will be heated. Since the phase change material is in close contact with the tank wall of the heat storage tank, it can absorb the heat of the tank body.
[0042] In some embodiments of the present application, the transportation device mentioned in the foregoing embodiments can also be equipped with a container, and the phase change material area and the heat storage tank are encapsulated in the container to reduce the influence of the outside world on the phase change material and the heat storage tank (such as temperature influence).
[0043] In some embodiments of the present application, the saturated water tank type heating system mentioned in the foregoing embodiments can also include a steam inlet / water inlet pipe, such as Figure 2 shown, the steam inlet / water inlet pipe can be connected to the heat storage tank to input demineralized water into the heat storage tank.
[0044] It can be understood that water, as a commonly used sensible heat storage medium, has a large heat capacity and can obtain a large heat storage density under large temperature differences and pressures. First, the required mass of demineralized water is filled into the heat storage tank through the steam inlet / water inlet pipe, and then high-temperature and high-pressure steam is filled into the demineralized water for heating. When it reaches saturated water, due to the increase in pressure, the boiling point of water rises, and the high-temperature saturated water remains in a liquid state.
[0045] Among them, during the process of heating the demineralized water to high-temperature saturated water, since the phase change material is in close contact with the tank body of the heat storage tank, the phase change material can absorb the heat of the tank body of the heat storage tank being heated.
[0046] Furthermore, these high-temperature saturated waters are stored in the heat storage tank. When transported to the user side, they can be transported to the user through the steam supply / discharge pipe. During the transportation to the user side, the pressure difference at both ends of the steam supply / discharge pipe causes the pressure of the high-temperature saturated water to drop, and the boiling point of the high-temperature saturated water drops, and it becomes steam when it reaches the user side.
[0047] In some embodiments of the present application, the saturated water tank type heating system mentioned in the foregoing embodiments can also include two end heads, such as Figure 2 shown, the two end heads are respectively installed at the head end and the tail end of the heat storage tank, playing a protective role for the heat storage tank.
[0048] In some embodiments of the present application, the saturated water tank type heating system mentioned in the foregoing embodiments may further include a liquid level gauge, such as Figure 2 shown, the liquid level gauge can monitor the real-time height of the high-temperature saturated water in the heat storage tank.
[0049] Specifically, when delivering steam to the user side, the amount of high-temperature saturated water in the heat storage tank will continuously decrease. When the water level is lower than the lower warning value of the liquid level gauge, the steam supply needs to be stopped. After the steam release is completed, the remaining demineralized water in the tank can be transported back to the heating site, replenished with a sufficient amount of demineralized water again, and then filled with high-temperature and high-pressure steam for recycling.
[0050] In some embodiments of the present application, the heat storage tank mentioned in the foregoing embodiments has a blowdown port, and the blowdown port can be used to release the dirt in the tank body of the heat storage tank, playing a role in cleaning the heat storage tank.
[0051] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.
[0052] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.
[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A saturated water tank type heating system, characterized in that: It includes a phase change material area, a steam supply / release pipe and a heat storage tank storing high-temperature saturated water, wherein the phase change material area contains a phase change material; The heat storage tank is horizontally placed in the heating system, and the phase change material area is fixed vertically above the heat storage tank; The front end of the steam supply / release pipe is connected to the heat storage tank, and the pipe body of the steam supply / release pipe is wrapped by the phase change material; The phase change material is used to supplement heat to the steam supply / release pipe when the saturated water tank type heating system releases steam to the user side through the steam supply / release pipe, so as to slow down the steam pressure change rate and temperature change rate in the steam supply / release pipe.
2. The saturated water tank type heating system according to claim 1, characterized in that: It also includes a transport device, wherein the transport device is equipped with a fixing bracket, and the heat storage tank is fixed on the transport device through the fixing bracket; The phase change material is also used to absorb the heat generated by the tank body of the heat storage tank when the tank body is transported by the transport device.
3. The saturated water tank type heating system according to claim 2, characterized in that: The transport device is further equipped with a container, and the phase change material area and the heat storage tank are enclosed in the container.
4. The saturated water tank type heating system according to claim 1, characterized in that: It also includes a steam / water inlet pipe, which is connected to the heat storage tank to input desalted water into the heat storage tank; The phase change material is also used to absorb the heat of the tank body of the heat storage tank when the desalted water is heated to high-temperature saturated water.
5. The saturated water tank type heating system according to claim 1, characterized in that: It also includes two sealing heads, which are respectively installed at the head end and the tail end of the heat storage tank.
6. The saturated water tank type heating system according to claim 1, characterized in that: A liquid level meter is also included to monitor the real-time height of the high-temperature saturated water in the heat storage tank.
7. The saturated water tank type heating system according to claim 1, characterized in that: The heat storage tank has a sewage outlet, and the sewage outlet is used to release the dirt in the tank body of the heat storage tank.
8. The saturated water tank type heating system according to any one of claims 1 to 7, characterized in that: The applicable temperature range of the phase change material is 180°C to 250°C.
9. The saturated water tank type heating system according to any one of claims 1 to 7, characterized in that: The phase change material area is in a square shape.