Pressure-stabilizing water-replenishing expansion device

Abstract

The utility model provides a pressure-stabilizing and water-replenishing expansion device. The pressure-stabilizing and water-replenishing expansion device comprises an expansion tank body and a pressure regulating plate arranged in the expansion tank body, the expansion tank body comprises a shell and a flexible water bag which is arranged in the shell and is filled with water; a preset cavity is formed between the outer wall of the flexible water bag and the inner wall of the shell, and a water outlet of the preset cavity is communicated with a water inlet of a system to be subjected to pressure-stabilizing water supplementing through a pressure-stabilizing water supplementing pipeline; a first preset distance is formed between the top end of the flexible water bag filled with water and the inner top surface of the shell; the outer peripheral wall of the pressure regulating plate is in sliding connection with the inner peripheral wall of the shell and divides the preset cavity into an upper cavity and a lower cavity filled with gas, an elastic part is arranged on the upper surface of the pressure regulating plate, and the top end of the elastic part is arranged on the inner top surface of the shell. The operation of discharging the gas filled in the lower cavity or repeatedly filling the lower cavity with the gas is avoided, so that the convenience of the adjusting process of the pressure in the to-be-stabilized water supplementing system is higher, and the operation efficiency and stability of the to-be-stabilized water supplementing system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure stabilizing and water supplementing, and in particular to a pressure stabilizing and water supplementing expansion device. BACKGROUND

[0002] The pressure stabilizing and water supplementing expansion device is a device for adjusting and stabilizing system pressure, and is widely used in new energy, energy saving and environmental protection, and solar power generation fields. Specifically, in the new energy field, for example, in solar photovoltaic power stations and wind power stations, the pressure stabilizing and water supplementing expansion device is used for pressure control and bubble elimination of the cooling system to ensure efficient operation of the system. It also plays a significant role in the energy saving and environmental protection field, that is, the use of the pressure stabilizing and water supplementing expansion device can reduce the frequent starting of the water pump, reduce energy consumption, prolong the service life of the equipment, and improve the overall efficiency of the system. In the field of solar power generation, the pressure stabilizing and water supplementing expansion device is used to buffer system pressure fluctuations to prevent the system pressure from being too high or too low, thereby protecting the safe operation of the system equipment.

[0003] The pressure stabilizing and water supplementing device mainly uses an expansion tank. Specifically, when water with pressure enters the air bag in the expansion tank, the nitrogen gas sealed in the tank is compressed. According to the Boyle's law, the volume of the gas decreases and the pressure increases after being compressed, and the water inflow stops when the gas pressure in the expansion tank is consistent with the water pressure. When the water flow is lost and the pressure is reduced, the gas pressure in the expansion tank is greater than the water pressure, at which time the gas expands to push the water in the air bag out to supplement the water in the system to be pressure stabilized, so as to realize the stable operation of the system to be pressure stabilized. In the above process, the pressure of the system to be pressure stabilized may be too large due to the increase in the temperature of the water in the system, which may cause the water in the system to be discharged into the air bag of the expansion tank, causing the air bag to expand rapidly and press the gas in the expansion tank, so that the gas pressure in the expansion tank is greater than the maximum pressure that the expansion tank can withstand. At this time, the gas in the expansion tank needs to be discharged until the gas pressure in the expansion tank is equal to the pressure of the system to be pressure stabilized. After the temperature of the water in the system to be pressure stabilized decreases, the expansion tank may not be able to adjust the pressure of the system to be pressure stabilized due to insufficient pressure, and gas needs to be introduced into the expansion tank again. This makes the operation complicated, thereby affecting the operation efficiency of the pressure stabilizing and water supplementing expansion system. CONTENT OF THE INVENTION

[0004] The present application provides a pressure stabilizing and water supplementing expansion device to solve the technical problems described in the background.

[0005] To solve the above technical problems, the present application adopts the following technical solutions:

[0006] The present application provides a pressure stabilizing and water supplementing expansion device, comprising: an expansion tank body and a pressure regulating plate arranged in the expansion tank body.

[0007] The expansion tank body comprises an outer shell and a flexible water bag arranged in the outer shell and filled with water; a preset chamber is formed between the outer wall of the flexible water bag and the inner wall of the outer shell, and the water outlet of the flexible water bag is communicated with the water inlet of the water pressure stabilizing and supplementing system through a water pressure stabilizing and supplementing pipeline.

[0008] The top end of the flexible water bag filled with water is at a first preset distance from the inner top surface of the outer shell.

[0009] The outer peripheral wall of the pressure regulating plate is slidingly connected with the inner peripheral wall of the outer shell and divides the preset chamber into an upper chamber and a lower chamber filled with gas; the upper surface of the pressure regulating plate is provided with an elastic member, and the top end of the elastic member is arranged on the inner top surface of the outer shell.

[0010] Optionally, the water pressure stabilizing and supplementing expansion device further comprises a control device.

[0011] The control device is arranged on the outer wall of the outer shell and is used for controlling and adjusting the process of the expansion tank body for water pressure stabilizing and supplementing of the water pressure stabilizing and supplementing system.

[0012] Optionally, the pressure regulating plate comprises an annular plate and a fixed cylinder with a preset height.

[0013] The top of the fixed cylinder is arranged on the inner top surface of the outer shell, the outer peripheral wall and the inner peripheral wall of the annular plate are slidingly connected with the inner peripheral wall of the outer shell and the outer peripheral wall of the fixed cylinder respectively, and the top of the flexible water bag filled with water extends into the fixed cylinder and an expansion space is formed between the outer wall of the flexible water bag and the inner wall of the fixed cylinder.

[0014] Optionally, the elastic member is a spring and has a plurality of elastic members.

[0015] The plurality of elastic members are arranged at equal intervals around the fixed cylinder, and the top end and the bottom end of the elastic members are fixedly connected with the inner top surface of the outer shell and the upper surface of the annular plate respectively.

[0016] Optionally, the water pressure stabilizing and supplementing pipeline is provided with a temperature sensor and a first electromagnetic valve, a high-temperature water outlet pipe is communicated on the pipeline between the temperature sensor and the first electromagnetic valve, a water storage tank is communicated at the end of the high-temperature water outlet pipe away from the water pressure stabilizing and supplementing pipeline, and a second electromagnetic valve is arranged on the water storage tank.

[0017] The first electromagnetic valve and the second electromagnetic valve are electrically connected with the control device.

[0018] Optionally, the outer shell is provided with an air inlet pipe communicated with the lower chamber, and the end of the air inlet pipe away from the lower chamber is used for communicating with a gas storage tank and is provided with a third electromagnetic valve.

[0019] The lower chamber is provided with a pressure sensor, and the pressure sensor and the third electromagnetic valve are electrically connected with the control device.

[0020] Optionally, the flexible water bag is communicated with a water inlet pipe, and an end of the water inlet pipe away from the flexible water bag is used for communicating with a water source and is provided with a metering pump.

[0021] The metering pump is electrically connected with the control device.

[0022] Optionally, the flexible water bag is made of ethylene propylene diene rubber or butyl rubber.

[0023] The flexible water bag is further provided with a protective coating with a preset thickness, and the protective coating is made of PVC, neoprene or nitrile rubber.

[0024] Optionally, the bottom of the shell is provided with a supporting leg.

[0025] The supporting leg is used for supporting the shell so that the bottom of the shell is at a second preset distance from a reference surface.

[0026] The pressure-stabilizing water-supplementing expansion device is provided with a pressure regulating plate in the shell of the expansion tank body, the flexible water bag in the expansion tank body is separated from a preset chamber formed by the shell into an upper chamber and a lower chamber by the pressure regulating plate, an elastic member is arranged between the upper surface of the pressure regulating plate and the inner top surface of the shell, the flexible water bag is filled with water, and the lower chamber is filled with gas. When the water temperature in the water pressure-stabilizing system rises, the pressure in the water pressure-stabilizing system rises. In order to maintain the pressure balance of the water pressure-stabilizing system, the water in the water pressure-stabilizing system enters the flexible water bag, so that the flexible water bag expands. The expanded flexible water bag extrudes the gas in the lower chamber, so that the pressure in the lower chamber increases. In order to avoid the pressure in the lower chamber exceeding a preset pressure threshold, the pressure regulating plate slides upward along the inner wall of the shell as the pressure in the lower chamber increases until the pressure in the lower chamber is equal to the pressure in the water pressure-stabilizing system. Conversely, when the water temperature in the water pressure-stabilizing system decreases, the pressure in the water pressure-stabilizing system decreases and is less than the gas pressure in the lower chamber. In order to maintain the pressure balance of the water pressure-stabilizing system, the gas in the lower chamber extrudes the flexible water bag, so that the flexible water bag contracts and the water in the flexible water bag enters the water pressure-stabilizing system. As the flexible water bag contracts, the space of the lower chamber increases, so that the pressure in the lower chamber decreases. At this time, the elastic member that is extruded will push the pressure regulating plate to slide downward along the inner wall of the shell under the action of its own elasticity until the pressure in the water pressure-stabilizing system is equal to the pressure in the lower chamber. The above process realizes the regulation of the pressure in the water pressure-stabilizing system by the pressure regulating plate, avoids the operation of discharging or repeatedly filling gas into the lower chamber, makes the regulation process of the pressure in the water pressure-stabilizing system more convenient, and improves the operation efficiency and stability of the water pressure-stabilizing system. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a pressure-stabilizing and water-replenishing expansion device provided in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the internal structure of an expansion tank body provided in an embodiment of this application;

[0030] Figure 3 A schematic diagram of the internal structure of the expansion tank body provided in another embodiment of this application;

[0031] Figure 4 A front sectional view of the expansion tank body provided in one embodiment of this application;

[0032] Figure 5 A flowchart illustrating the electrical connections between various components and a control device according to an embodiment of this application.

[0033] In the diagram: 100, Expansion tank body; 101, Outer shell; 1011, Support leg; 102, Flexible water bladder; 200, Pressure regulating plate; 201, Annular plate; 202, Fixed cylinder; 300, Preset chamber; 301, Upper chamber; 302, Lower chamber; 3021, Pressure sensor; 400, Pressure stabilizing water supply pipe; 401, Temperature sensor; 402, First solenoid valve; 403, High-temperature water outlet pipe; 4031, Water storage tank; 4032, Second solenoid valve; 500, Elastic element; 600, Control device; 700, Expansion space; 800, Air inlet pipe; 801, Gas storage tank; 802, Third solenoid valve; 900, Water inlet pipe; 901, Metering pump. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0035] refer to Figures 1 to 5The application provides a pressure-stabilizing water-supplementing expansion device, which comprises an expansion tank body 100 and a pressure-regulating plate 200 arranged in the expansion tank body 100, and the specific structure of the expansion tank body 100 is as follows.

[0036] The expansion tank body 100 comprises an outer shell 101 and a flexible water bag 102 arranged in the outer shell 101 and filled with water; a preset chamber 300 is formed between the outer wall of the flexible water bag 102 and the inner wall of the outer shell 101, and the water outlet of the flexible water bag 102 is communicated with the water inlet of a water-stabilizing system to be stabilized through a pressure-stabilizing water-supplementing pipeline 400; the flexible water bag 102 can expand and contract. The water-stabilizing system to be stabilized can be a cooling system of a solar photovoltaic power station, a cooling system of a wind power station or the like, and the specific setting can be made according to actual needs, and the application does not make specific limitation on the water-stabilizing system to be stabilized.

[0037] The top end of the flexible water bag 102 filled with water is away from the inner top surface of the outer shell 101 by a first preset distance; the first preset distance can be set according to actual needs, and the application does not make specific limitation on the first preset distance.

[0038] The outer peripheral wall of the pressure-regulating plate 200 is in sliding connection with the inner peripheral wall of the outer shell 101 and separates the preset chamber 300 into an upper chamber 301 and a lower chamber 302 filled with gas, and the upper surface of the pressure-regulating plate 200 is provided with an elastic member 500, and the top end of the elastic member 500 is arranged on the inner top surface of the outer shell 101. The pressure-regulating plate 200 is in sliding and sealing connection with the outer shell 101, and the specific connection mode can be set according to actual needs, and the application does not make specific limitation on the connection mode. The sliding and sealing connection between the pressure-regulating plate 200 and the outer shell 101 makes the gas in the lower chamber 302 not enter into the upper chamber 301.

[0039] The pressure stabilizing and water supplementing expansion device provided by the application is characterized in that a pressure regulating plate 200 is arranged in the shell 101 of the expansion tank body 100, the flexible water bag 102 in the expansion tank body 100 is separated into an upper chamber 301 and a lower chamber 302 by the pressure regulating plate 200, an elastic member 500 is arranged between the upper surface of the pressure regulating plate 200 and the inner top surface of the shell 101, and the flexible water bag 102 is filled with water and the lower chamber 302 is filled with gas. When the water temperature in the water system to be stabilized and supplemented rises, the pressure in the water system to be stabilized and supplemented rises. In order to maintain the pressure balance of the water system to be stabilized and supplemented, the water in the water system to be stabilized and supplemented enters the flexible water bag 102, so that the flexible water bag 102 expands. The expanded flexible water bag 102 extrudes the gas in the lower chamber 302, so that the pressure in the lower chamber 302 increases. In order to avoid the pressure in the lower chamber 302 exceeding the preset pressure threshold, the pressure regulating plate 200 slides upward along the inner wall of the shell 101 until the pressure in the lower chamber 302 is equal to the pressure in the water system to be stabilized and supplemented. Conversely, when the water temperature in the water system to be stabilized and supplemented decreases, the pressure in the water system to be stabilized and supplemented decreases and is less than the gas pressure in the lower chamber 302. In order to maintain the pressure balance of the water system to be stabilized and supplemented, the gas in the lower chamber 302 extrudes the flexible water bag 102, so that the flexible water bag 102 shrinks and the water in the flexible water bag 102 enters the water system to be stabilized and supplemented. As the flexible water bag 102 shrinks, the space of the lower chamber 302 increases, so that the pressure in the lower chamber 302 decreases. At this time, the elastic member 500 that is extruded pushes the pressure regulating plate 200 to slide downward along the inner wall of the shell 101 under the action of the elastic force of the elastic member 500 until the pressure in the water system to be stabilized and supplemented is equal to the pressure in the lower chamber 302. The above process realizes the regulation of the pressure in the water system to be stabilized and supplemented by the pressure regulating plate 200, avoids the operation of discharging or repeatedly filling the gas in the lower chamber 302, makes the regulation process of the pressure in the water system to be stabilized and supplemented more convenient, and thus improves the operation efficiency and stability of the water system to be stabilized and supplemented.

[0040] In some embodiments, with reference to Figure 1 The pressure stabilizing and water supplementing expansion device in the application further comprises a control device 600. Specifically, the control device 600 is arranged on the outer wall of the shell 101 and is used for controlling and regulating the process of the expansion tank body 100 for stabilizing and supplementing the water system to be stabilized. The arrangement of the control device 600 facilitates the regulation of the pressure of the water system to be stabilized by the expansion tank body 100, so as to ensure the stability of the water system to be stabilized.

[0041] In the above embodiments, the control device 600 can be a PLC controller, and the specific type, specification and model thereof can be set according to actual needs, which are not limited herein.

[0042] In some embodiments, with reference to Figure 2 , Figure 3 and Figure 4 , the pressure regulating plate 200 in the present application comprises a ring-shaped plate 201 and a fixed cylinder 202 with a preset height; wherein the preset height can be set according to actual needs, and the present application does not make specific limitation hereon.

[0043] In addition, the top of the fixed cylinder 202 is arranged on the inner top surface of the shell 101, the outer peripheral wall and the inner peripheral wall of the ring-shaped plate 201 are respectively in sliding connection with the inner peripheral wall of the shell 101 and the outer peripheral wall of the fixed cylinder 202, the top of the flexible water bag 102 filled with water extends into the fixed cylinder 202 and an expansion space 700 is formed between the outer wall of the flexible water bag 102 and the inner wall of the fixed cylinder 202.

[0044] In the above embodiments, the fixed cylinder 202 with a preset height is arranged to separate the preset chamber 300 into an upper chamber 301 and a lower chamber 302, the inner peripheral wall and the outer peripheral wall of the ring-shaped plate 201 can be respectively provided with a first sliding groove and a first sliding block, the inner peripheral wall of the shell 101 is provided with a second sliding groove matched with the first sliding block, and the outer wall of the fixed cylinder 202 can be provided with a second sliding block matched with the second sliding groove, so as to realize the sliding connection of the ring-shaped plate 201 with the shell 101 and the fixed cylinder 202. The above is only one possible implementation mode of the sliding connection of the ring-shaped plate 201 with the shell 101 and the fixed cylinder 202, and the present application does not make specific limitation hereon. The sliding connection of the ring-shaped plate 201 with the shell 101 and the fixed cylinder 202 realizes the regulation of the pressure in the lower chamber 302, avoids the operation of discharging the gas in the lower chamber 302 or filling the gas into the lower chamber 302 due to the excessive or insufficient pressure in the lower chamber 302, and makes the pressure regulating process of the water supplementing system easy to operate, thereby improving the operation efficiency thereof.

[0045] In some embodiments, with reference to Figure 2 and Figure 3 , the elastic member 500 in the present application is a spring and has a plurality of numbers; wherein the specific number of the elastic member 500 can be set according to actual needs, and the present application does not make specific limitation hereon.

[0046] In addition, the plurality of elastic members 500 are arranged at equal intervals around the fixed cylinder 202, and the top end and the bottom end thereof are respectively in fixed connection with the inner top surface of the shell 101 and the upper surface of the ring-shaped plate 201.

[0047] In the above embodiment, the elastic member 500 is arranged such that when the pressure in the water to be stabilized and supplemented system is greater than the pressure in the lower chamber 302 due to the increase in the water temperature of the water to be stabilized and supplemented system, the water in the water to be stabilized and supplemented system flows into the flexible water bag 102 to cause the flexible water bag 102 to expand, and the expanded flexible water bag 102 presses the gas in the lower chamber 302 to cause the annular plate 201 to move vertically upward along the inner wall of the outer shell 101 and the outer wall of the fixed cylinder 202 until the pressure in the lower chamber 302 is equal to the pressure in the water to be stabilized and supplemented system, and the elastic member 500 is compressed in the process of the upward movement of the annular plate 201. When the pressure in the water to be stabilized and supplemented system decreases, i.e., the pressure in the lower chamber 302 is greater than the pressure in the water to be stabilized and supplemented system, the compressed elastic member rebounds under the action of its own elasticity and presses the annular plate 201 downward, causing the annular plate 201 to move vertically downward, and the gas in the lower chamber 302 presses the flexible water bag 102 to press the water in the flexible water bag 102 into the water to be stabilized and supplemented system until the pressure in the lower chamber 302 is equal to the pressure in the water to be stabilized and supplemented system. The arrangement of the elastic member 500 enables the annular plate 201 to move vertically upward or downward according to the pressure of the water to be stabilized and supplemented system, thereby improving the convenience of pressure adjustment of the water to be stabilized and supplemented system.

[0048] In some embodiments, with reference to Figure 1 and Figure 5 The water to be stabilized and supplemented pipeline 400 in the present application is provided with a temperature sensor 401 and a first electromagnetic valve 402, and a high-temperature water outlet pipe 403 is communicated on the pipeline between the temperature sensor 401 and the first electromagnetic valve 402, one end of the high-temperature water outlet pipe 403 away from the water to be stabilized and supplemented pipeline 400 is communicated with a water storage tank 4031 and is provided with a second electromagnetic valve 4032; wherein the temperature sensor 401 is used for detecting the temperature of the water discharged from the water to be stabilized and supplemented pipeline 400, and the specifications and models of the temperature sensor 401, the first electromagnetic valve 402 and the second electromagnetic valve 4032 can be set according to actual needs, and the present application does not make specific limitation thereto.

[0049] The first electromagnetic valve 402 and the second electromagnetic valve 4032 are electrically connected with the control device 600.

[0050] In the above embodiment, as the water temperature in the water supply system to be stabilized increases to increase the pressure, in order to ensure the normal operation of the water supply system to be stabilized, the water in the water supply system to be stabilized will flow out of the water supply system to be stabilized until the pressure of the water supply system to be stabilized is within the normal range, and the water flowing out of the water supply system to be stabilized has a high temperature and stays in the flexible water bag 102 for a long time, which will accelerate the aging of the flexible water bag 102 and the like. Therefore, in order to prolong the service life of the flexible water bag 102, when the temperature sensor 401 detects that the water temperature of the water flowing out of the water supply system to be stabilized into the water supply pipe 400 is higher than the preset threshold value (which can be set according to actual needs, and the present application does not make specific limitations thereon), the first electromagnetic valve 402 is closed and the second electromagnetic valve 403 is opened, so that the water in the water supply system to be stabilized with a temperature higher than the preset threshold value flows into the water storage tank 403 through the water supply pipe 400, thereby prolonging the service life of the flexible water bag 102 and enabling the water supply system to be stabilized to operate stably and safely.

[0051] In some embodiments, with reference to Figure 1 and Figure 5 The shell 101 in the present application is provided with an air inlet pipe 800 communicating with the lower chamber 302, and the end of the air inlet pipe 800 away from the lower chamber 302 is used to communicate with a gas storage tank 801, and a third electromagnetic valve 802 is arranged on the air inlet pipe 800. The gas stored in the gas storage tank 801 is usually nitrogen, because nitrogen has high stability and low cost. Therefore, the use of nitrogen in the present application can balance the pressure in the lower chamber, prevent overpressure, prevent oxygen from entering the system, provide a buffering effect, prolong the service life of the equipment, and improve the safety and economy of the system.

[0052] The pressure sensor 3021 and the third electromagnetic valve 802 are both electrically connected to the control device 600. The specifications and models of the pressure sensor 3021 and the third electromagnetic valve 802 can be set according to actual needs, and therefore the present application does not make specific limitations thereon.

[0053] In the above embodiment, the third electromagnetic valve 802 is opened by the control device 600, and gas is supplied from the gas storage tank 801 to the lower chamber 302, until the pressure sensor 3021 detects that the pressure in the lower chamber 302 is equal to the pressure of the water supply system to be stabilized, and then the third electromagnetic valve 802 is closed by the control device 600, so that the process of supplying gas from the gas storage tank 801 to the lower chamber 302 is more convenient and easy to control.

[0054] In some embodiments, with reference to Figure 1 and Figure 5The flexible water bag 102 in the application is communicated with a water inlet pipe 900, and the end of the water inlet pipe 900 away from the flexible water bag 102 is used for communicating with a water source and is provided with a metering pump 901; wherein, before the whole device is operated, the metering pump 901 is opened, and the water of the water source is transported into the flexible water bag 102 through the water inlet pipe 900, so as to fill the flexible water bag 102 with water with a certain pressure, and the metering pump 901 can accurately measure the amount of water transported into the flexible water bag 102 while providing power for the water into the flexible water bag 102.

[0055] The metering pump 901 is electrically connected with the control device 600, and the control device 600 can control the on-off of the metering pump 901, so that the process of transporting water into the flexible water bag 102 is more convenient and easy to operate.

[0056] In some embodiments, the flexible water bag 102 in the application is made of ethylene-propylene-diene rubber or butyl rubber; since the ethylene-propylene-diene rubber has good weather resistance and aging resistance, and the butyl rubber has good sealing performance, whether the ethylene-propylene-diene rubber or the butyl rubber is selected to prepare the flexible water bag 102 depends on the actual situation, which is not limited herein.

[0057] In addition, the flexible water bag 102 is also provided with a protective coating with a preset thickness, and the protective coating is made of PVC, neoprene or nitrile rubber coating material. The protective coating can be arranged on the outer wall of the flexible water bag 102 by means of gluing or one-piece forming, and the connection mode and the preset thickness of the protective coating can be set according to actual needs, which are not limited herein. In addition, the setting of the protective coating further plays a protective role on the flexible water bag 102, so that the flexibility, corrosion resistance and the like of the flexible water bag 102 are better, thereby improving the service life of the flexible water bag 102.

[0058] In some embodiments, referring to Figure 1 The bottom of the shell 101 in the application is provided with support legs 1011; wherein, in order to ensure the stability of the shell 101, the support legs 1011 are multiple, and the top ends of the multiple support legs 1011 are fixedly connected to the outer wall of the shell 101, and the number of the support legs 1011 can be set according to actual needs, which is not limited herein.

[0059] In addition, the support leg 1011 is used to support the shell 101 so that the bottom of the shell 101 is at a second preset distance from a reference surface. The support leg 1011 is arranged so that the shell 101 is supported and at a second preset distance from the reference surface, facilitating installation of components such as the pressure stabilizing and water supplementing pipeline 400, the water inlet pipe 900, and the air inlet pipe 800. The reference surface can be a work plane on which the shell 101 is placed, and the height of the support leg 1011 and the second preset distance can be set according to actual needs, which are not limited herein.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. The modifications or replacements do not change the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pressure-stabilizing, water-replenishing, and expanding device, characterized in that, include: Expansion tank body (100) and pressure regulating plate (200) disposed within the expansion tank body (100); The expansion tank body (100) includes an outer shell (101) and a flexible water bladder (102) disposed inside the outer shell (101) and filled with water; a preset chamber (300) is formed between the outer wall of the flexible water bladder (102) and the inner wall of the outer shell (101), and its outlet is connected to the inlet of the pressure-stabilized water supply system through a pressure-stabilizing water supply pipe (400); The top of the flexible water bladder (102) filled with water is a first preset distance from the inner top surface of the outer shell (101); The outer peripheral wall of the pressure regulating plate (200) is slidably connected to the inner peripheral wall of the outer shell (101) and divides the preset chamber (300) into an upper chamber (301) and a lower chamber (302) filled with gas. An elastic element (500) is provided on the upper surface of the pressure regulating plate (200), and the top end of the elastic element (500) is provided on the inner top surface of the outer shell (101).

2. The pressure-stabilizing, water-replenishing, and expansion device according to claim 1, characterized in that, It also includes a control device (600); The control device (600) is installed on the outer wall of the housing (101) and is used to control and adjust the process of the expansion tank body (100) to stabilize the pressure and replenish the water to the pressure-stabilized water replenishment system.

3. The pressure-stabilizing, water-replenishing, and expansion device according to claim 1, characterized in that, The pressure regulating plate (200) includes an annular plate (201) and a fixed cylinder (202) with a preset height. The top of the fixed cylinder (202) is disposed on the inner top surface of the outer shell (101). The outer peripheral wall and inner peripheral wall of the annular plate (201) slide against the inner peripheral wall of the outer shell (101) and the outer peripheral wall of the fixed cylinder (202), respectively. The top of the flexible water bladder (102) filled with water extends into the fixed cylinder (202) and an expansion space (700) is formed between its outer wall and the inner wall of the fixed cylinder (202).

4. The pressure-stabilizing, water-replenishing, and expansion device according to claim 3, characterized in that, The elastic element (500) is a spring and there are multiple springs; Multiple elastic elements (500) are arranged at equal intervals around the fixed cylinder (202), and their top and bottom ends are fixedly connected to the inner top surface of the outer shell (101) and the upper surface of the annular plate (201), respectively.

5. The pressure-stabilizing, water-replenishing, and expansion device according to claim 2, characterized in that, A temperature sensor (401) and a first solenoid valve (402) are provided on the pressure-stabilizing water supply pipe (400), and a high-temperature water outlet pipe (403) is connected to the pipe body between the temperature sensor (401) and the first solenoid valve (402). The end of the high-temperature water outlet pipe (403) away from the pressure-stabilizing water supply pipe (400) is connected to a water storage tank (4031), and a second solenoid valve (4032) is provided on it. The first solenoid valve (402) and the second solenoid valve (4032) are both electrically connected to the control device (600).

6. The pressure-stabilizing, water-replenishing, and expansion device according to claim 2, characterized in that, An air inlet pipe (800) communicating with the lower chamber (302) is provided on the outer shell (101). The end of the air inlet pipe (800) away from the lower chamber (302) is used to communicate with the gas storage tank (801) and a third solenoid valve (802) is provided on it. The lower chamber (302) is equipped with a pressure sensor (3021), and both the pressure sensor (3021) and the third solenoid valve (802) are electrically connected to the control device (600).

7. The pressure-stabilizing, water-replenishing, and expansion device according to claim 2, characterized in that, The flexible water bladder (102) is connected to a water inlet pipe (900), and the end of the water inlet pipe (900) away from the flexible water bladder (102) is used to connect to a water source and is equipped with a metering pump (901). The metering pump (901) is electrically connected to the control device (600).

8. The pressure-stabilizing and water-replenishing expansion device according to any one of claims 1 to 7, characterized in that, The flexible water bladder (102) is made of EPDM rubber or butyl rubber; The flexible water bladder (102) is also provided with a protective coating of a preset thickness, which is made of PVC, neoprene rubber or nitrile rubber.

9. The pressure-stabilizing and water-replenishing expansion device according to any one of claims 1 to 7, characterized in that, The bottom of the outer casing (101) is provided with a support leg (1011). The support leg (101) is used to support the outer shell (101) so that the bottom of the outer shell (101) is a second preset distance from the reference surface.

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