An improved internal structure of a buffer tank

Abstract

This utility model relates to the field of boiler buffer tank technology, and more particularly to an improved internal structure of a buffer tank. It includes a boiler buffer tank with a top cover screwed onto its upper side, and a buffer pressure relief assembly located below the top cover. The buffer pressure relief assembly includes a through pipe, an inner cylinder fixedly installed on the outer wall of the through pipe, an outer cylinder located outside the inner cylinder, several sets of inner arc plates fixedly installed on the outer wall of the inner cylinder, and several sets of outer arc plates fixedly installed on the inner wall of the outer cylinder corresponding to the inner arc plates. Several springs are fixedly connected between the inner and outer arc plates. A top plate and a bottom plate are fixedly encapsulated on the upper and lower sides of the inner and outer arc plates, respectively. Through the buffer pressure relief assembly, the main body of this utility model, consisting of the outer cylinder, inner cylinder, top plate, and bottom plate, forms a hollow airbag, enabling the internal air pressure of the boiler buffer tank to achieve adaptive dynamic buffering and adjustment, reducing system pressure fluctuations during boiler operation, making boiler operation more stable, and enhancing practicality.

Description

Technical Field

[0001] This utility model relates to the field of boiler buffer tank technology, and in particular to an improved internal structure of a buffer tank. Background Technology

[0002] System pressure fluctuations are a common problem during boiler operation, which not only affects the stable operation of the boiler but may also damage related equipment.

[0003] As a key device for mitigating pressure fluctuations, the optimization of the internal structure of the buffer tank is crucial. This design aims to propose a novel internal structure for the buffer tank, effectively improving buffering performance and ensuring the efficient and stable operation of the boiler system. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an improved internal structure for a buffer tank.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An improved internal structure of a buffer tank includes a boiler buffer tank. A top cover is screwed onto the upper side of the boiler buffer tank, and a buffer pressure relief assembly is provided on the lower side of the top cover. The buffer pressure relief assembly includes a through pipe, an inner cylinder is fixedly installed on the outer wall of the through pipe, an outer cylinder is provided on the outer side of the inner cylinder, a plurality of sets of inner arc plates are fixedly installed on the outer wall of the inner cylinder, a plurality of sets of outer arc plates are fixedly installed on the inner wall of the outer cylinder corresponding to the inner arc plates, a plurality of springs are fixedly connected between the inner arc plates and the outer arc plates, and a top plate and a bottom plate are fixedly encapsulated on the upper and lower sides of the inner arc plates and the outer arc plates, respectively.

[0007] Furthermore, a pressure relief solenoid valve is fixedly installed at the lower end of the pipe.

[0008] Furthermore, a vent hole is provided at the center of the top cover, and the upper end of the through pipe passes through the upper side of the mounting plate and is connected to the lower port of the vent hole.

[0009] Furthermore, a dustproof cap is fastened to the upper end of the vent hole, and a dustproof net is installed on the dustproof cap.

[0010] Furthermore, an air inlet pipe and an air outlet pipe are fixedly connected to both sides of the boiler buffer tank.

[0011] Furthermore, a first solenoid valve is fixedly installed on the air intake pipe, and a second solenoid valve is fixedly installed on the air outlet pipe.

[0012] Furthermore, a controller is fixedly installed on the front side wall of the boiler buffer tank, and a pressure gauge is fixedly installed on the left side wall of the boiler buffer tank. The pressure gauge is electrically connected to the controller.

[0013] Furthermore, stiffening ribs are fixedly installed circumferentially at equal intervals on the inner sides of both the top plate and the bottom plate, and the outer cylinder, inner cylinder, top plate, and bottom plate are all made of high-temperature resistant rubber.

[0014] Compared with related technologies, the improved internal structure of the buffer tank proposed in this utility model has the following beneficial effects:

[0015] In this invention, an improved internal structure of the buffer tank is described. Through the inclusion of a buffer pressure relief component, the main body of which consists of an outer cylinder, an inner cylinder, a top plate, and a bottom plate forming a hollow air bladder. Several radially arranged springs are used inside for abutment. When the internal air pressure of the boiler buffer tank increases, the pressure overcomes the spring's rebound force, causing the springs to deform and compress. This causes the outer cylinder to contract radially towards the inner cylinder, reducing the overall volume of the hollow air bladder and further increasing the internal volume of the boiler buffer tank. This reduces the internal air pressure, thus buffering the pressure in the boiler buffer tank. When the air pressure returns to normal, the spring's rebound force gradually restores the volume of the hollow air bladder. Therefore, through the buffer pressure relief component, the internal air pressure of the boiler buffer tank achieves an adaptive dynamic buffering and adjustment function, reducing system pressure fluctuations during boiler operation, making boiler operation more stable, and enhancing practicality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the internal structure of an improved buffer tank proposed in this utility model;

[0017] Figure 2 This is a three-dimensional disassembled structural diagram of the internal structure of an improved buffer tank proposed in this utility model;

[0018] Figure 3 A three-dimensional structural diagram of the buffer pressure relief assembly;

[0019] Figure 4 A three-dimensional structural breakdown diagram of the buffer pressure relief component;

[0020] Figure 5 Schematic diagram of the three-dimensional structure of the buffer pressure relief assembly Figure 1 ;

[0021] Figure 6 Schematic diagram of the three-dimensional structure of the buffer pressure relief assembly Figure 2 .

[0022] In the diagram: 1. Boiler buffer tank; 2. Top cover; 21. Vent hole; 3. Dustproof cover; 4. Controller; 5. Pressure gauge; 6. Buffer and pressure relief assembly; 61. Through pipe; 62. Mounting plate; 63. Pressure relief solenoid valve; 64. Outer cylinder; 65. Inner cylinder; 66. Top plate; 67. Bottom plate; 68. Spring; 69. Outer arc plate; 610. Inner arc plate; 611. Stiffening rib; 7. Inlet pipe; 8. First solenoid valve; 9. Outlet pipe; 10. Second solenoid valve. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Reference Figures 1-6 An improved internal structure of a buffer tank includes a boiler buffer tank 1, with a top cover 2 screwed onto the upper side of the boiler buffer tank 1, and a buffer pressure relief assembly 6 disposed on the lower side of the top cover 2; the buffer pressure relief assembly 6 includes a through pipe 61, an inner cylinder 65 fixedly installed on the outer wall of the through pipe 61, an outer cylinder 64 disposed on the outer side of the inner cylinder 65, several sets of inner arc plates 610 fixedly installed on the outer wall of the inner cylinder 65, several sets of outer arc plates 69 fixedly installed on the inner wall of the outer cylinder 64 corresponding to the inner arc plates 610, several springs 68 fixedly connected between the inner arc plates 610 and the outer arc plates 69, and a top plate 66 and a bottom plate 67 fixedly encapsulated on the upper and lower sides of the inner arc plates 610 and the outer arc plates 69, respectively.

[0025] In this method, an air inlet pipe 7 and an air outlet pipe 9 are fixedly connected to each other on both sides of the boiler buffer tank 1. A first solenoid valve 8 is fixedly installed on the air inlet pipe 7, and a second solenoid valve 10 is fixedly installed on the air outlet pipe 9.

[0026] With the above configuration, the inlet pipe 7 is used to introduce high-pressure gas into the boiler, so that the boiler buffer tank 1 can regulate the internal gas pressure of the boiler. The outlet pipe 9 is used to introduce gas into the relevant heat recovery equipment. The first solenoid valve 8 and the second solenoid valve 10 are used to control the conduction state of the inlet pipe 7 and the outlet pipe 9, respectively.

[0027] In this method, a controller 4 is fixedly installed on the front wall of the boiler buffer tank 1, and a pressure gauge 5 is fixedly installed on the left side wall of the boiler buffer tank 1. The pressure gauge 5 is electrically connected to the controller 4.

[0028] With the above settings, the pressure gauge 5 is used to monitor the internal pressure of the boiler buffer tank 1. When the internal pressure of the boiler buffer tank 1 exceeds the limit, the controller 4 opens the pressure relief solenoid valve 63 according to the pressure information fed back by the pressure gauge 5 to actively relieve the pressure inside the boiler buffer tank 1, so as to keep the internal pressure of the boiler buffer tank 1 stable and avoid affecting the stable operation of the boiler.

[0029] In this method, stiffening ribs 611 are fixedly installed circumferentially at equal intervals on the inner sides of the top plate 66 and the bottom plate 67. The outer cylinder 64, inner cylinder 65, top plate 66 and bottom plate 67 are all made of high-temperature resistant rubber.

[0030] Through the above-mentioned design, the high-temperature resistant rubber material possesses airtightness and deformation capability, thereby enabling the hollow airbag formed by the outer cylinder 64, inner cylinder 65, top plate 66, and bottom plate 67 to deform and contract under air pressure. The stiffening ribs 611, which are circumferentially and equidistantly fixed on the inner sides of the top plate 66 and bottom plate 67, strengthen the structural strength of the top plate 66 and bottom plate 67, thereby greatly reducing the deformation of the top plate 66 and bottom plate 67 under pressure. This allows the hollow airbag formed by the outer cylinder 64, inner cylinder 65, top plate 66, and bottom plate 67 to primarily undergo radial contraction deformation.

[0031] In this configuration, a pressure relief solenoid valve 63 is fixedly installed at the lower end of the pipe 61, and a vent hole 21 is provided at the center of the top cover 2. The upper end of the pipe 61 passes through the upper side of the mounting plate 62 and is connected to the lower port of the vent hole 21.

[0032] With the above configuration, when the pressure relief solenoid valve 63 is opened, the gas in the boiler buffer tank 1 will be discharged to the outside of the boiler buffer tank 1 through the through pipe 61 and the vent hole 21.

[0033] In this method, a dustproof cover 3 is fastened to the upper port of the vent 21, and a dustproof net is installed on the dustproof cover 3.

[0034] By using the above-mentioned method, the dustproof net is installed to prevent dust from entering the vent 21 and causing blockage.

[0035] The working principle of the improved internal structure of the buffer tank provided by this utility model is as follows:

[0036] During operation, when the boiler is running normally, the first solenoid valve 8 is opened, and the high-pressure gas inside the boiler enters the boiler buffer tank 1 through the inlet pipe 7. At this time, the second solenoid valve 10 is closed, and the gas is temporarily stored in the boiler buffer tank 1. The buffer tank begins to initially regulate the gas pressure inside the boiler. The pressure gauge 5 monitors the gas pressure inside the boiler buffer tank 1 in real time and feeds the pressure information back to the controller 4. If the gas pressure is within the normal range, the entire system maintains a stable operating state, and the gas is stored relatively stably in the boiler buffer tank 1, providing a certain pressure buffer for boiler operation. When pressure fluctuations occur during boiler operation, causing the gas pressure inside the boiler buffer tank 1 to rise, the gas exerts pressure on the outer cylinder 64 of the buffer pressure relief component 6 under the action of pressure, thereby reducing the overall volume of the cavity airbag composed of the outer cylinder 64, inner cylinder 65, top plate 66, and bottom plate 67. According to the gas state equation, under the condition of constant mass, the reduction in the volume of the cavity airbag will reduce the pressure on the boiler. The actual volume of gas that the buffer tank 1 can hold increases, thereby reducing the internal gas pressure of the boiler buffer tank 1 and buffering the gas pressure. When the gas pressure returns to normal, the rebound force of the spring 68 takes effect, pushing the outer cylinder 64 to expand outward, so that the volume of the cavity gas bag gradually returns to the initial state. During this process, the internal gas pressure of the boiler buffer tank 1 remains stable, realizing the adaptive dynamic buffering and adjustment function of the internal gas pressure of the buffer tank, reducing the system pressure fluctuation during boiler operation, and ensuring the stable operation of the boiler. If the pressure gauge 5 detects that the internal gas pressure of the boiler buffer tank 1 exceeds the limit, it will feed this information back to the controller 4. The controller 4 opens the pressure relief solenoid valve 63 according to the feedback gas pressure information. At this time, the gas in the boiler buffer tank 1 will be discharged to the outside of the boiler buffer tank 1 through the pipe 61 and the vent hole 21, thereby actively reducing the internal gas pressure of the boiler buffer tank 1 and keeping it within a stable range, avoiding the impact of excessive gas pressure on the stable operation of the boiler.

[0037] In this method, the spring 68 is a helical compression spring, with six springs 68 evenly arranged between each set of inner arc plates 610 and outer arc plates 69. The elastic coefficient of a single spring 68 is 15 N / mm, and the initial installation compression of the spring 68 is 10 mm. This parameter setting ensures that within the normal fluctuation range of the gas pressure inside the boiler buffer tank 1, the spring 68 can effectively buffer pressure changes. When the gas pressure increases, the spring 68 can cause the outer cylinder 64 to radially contract 15 mm towards the inner cylinder 65 under a pressure increment of 0.3 MPa, ensuring that the cavity airbag achieves effective deformation, thereby regulating the gas pressure inside the boiler buffer tank 1.

[0038] The initial radial distance between the inner cylinder 65 and the outer cylinder 64 is 12mm. This distance ensures that the outer cylinder 64 has sufficient room to contract under the action of the spring 68, while avoiding structural redundancy due to excessive distance. At the same time, both the inner arc plate 610 and the outer arc plate 69 adopt an arc-shaped structure, and their curvature matches the inner wall curvature of the inner cylinder 65 and the outer cylinder 64 to ensure that the spring 68 is subjected to uniform force and improve the overall stability of the buffer pressure relief assembly 6.

[0039] Controller 4 uses a PLC-1200 programmable logic controller. Its internal preset air pressure control logic is as follows: when the pressure gauge 5 detects that the air pressure inside the boiler buffer tank 1 exceeds 0.8MPa, controller 4 immediately sends an opening command to the pressure relief solenoid valve 63; when the air pressure drops to 0.6MPa, controller 4 controls the pressure relief solenoid valve 63 to close. Through such precise air pressure threshold control, the air pressure inside the boiler buffer tank 1 can be maintained within a safe and stable range in a timely and effective manner, avoiding the impact of excessive air pressure on boiler operation.

[0040] The inlet pipe 7 and outlet pipe 9 are symmetrically installed on both sides of the boiler buffer tank 1 at a distance of 1 / 3 of the tank height from the bottom. Both the inlet pipe 7 and outlet pipe 9 have a diameter of DN50, and their ends are equipped with flanges, which are bolted to the boiler buffer tank 1 for secure connection. This installation position and pipe diameter design ensures uniform gas flow within the boiler buffer tank 1, improves the efficiency of gas pressure regulation, and facilitates connection to external pipelines.

[0041] The dustproof net is made of stainless steel with a pore size of 0.3mm and a mesh size of 50. This specification of dustproof net can effectively block dust, particles and other impurities from entering the vent hole 21 to prevent blockage, and can also ensure that the gas is discharged smoothly without causing significant resistance to the pressure relief process.

[0042] The stiffening ribs 611 are L-shaped stainless steel strips, 80mm long, 20mm wide, and 3mm thick, fixedly installed circumferentially at equal intervals on the inner sides of the top plate 66 and bottom plate 67, with an included angle of 30° between adjacent stiffening ribs 611. This structural design effectively enhances the structural strength of the top plate 66 and bottom plate 67. Testing shows that when subjected to a gas pressure of 0.8MPa, the deformation of the top plate 66 and bottom plate 67 can be controlled within 0.5mm, ensuring that the deformation of the buffer pressure relief assembly 6 mainly occurs in the radial contraction between the outer cylinder 64 and the inner cylinder 65, thereby guaranteeing the stability and reliability of the buffering effect.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An improved internal structure of a buffer tank, characterized in that, It includes a boiler buffer tank (1), a top cover (2) is screwed onto the upper side of the boiler buffer tank (1), and a buffer pressure relief assembly (6) is provided on the lower side of the top cover (2). The buffer pressure relief assembly (6) includes a through pipe (61), an inner cylinder (65) is fixedly installed on the outer wall of the through pipe (61), an outer cylinder (64) is provided on the outer side of the inner cylinder (65), a number of inner arc plates (610) are fixedly installed on the outer wall of the inner cylinder (65), a number of outer arc plates (69) are fixedly installed on the inner wall of the outer cylinder (64) corresponding to the inner arc plates (610), a number of springs (68) are fixedly connected between the inner arc plates (610) and the outer arc plates (69), and a top plate (66) and a bottom plate (67) are fixedly encapsulated on the upper and lower sides of the inner arc plates (610) and the outer arc plates (69), respectively.

2. The improved internal structure of the buffer tank according to claim 1, characterized in that, A pressure relief solenoid valve (63) is fixedly installed at the lower end of the through pipe (61).

3. The improved internal structure of the buffer tank according to claim 1, characterized in that, The top cover (2) has a vent hole (21) at its center. The upper end of the tube (61) passes through the upper side of the mounting plate (62) and the upper end of the tube (61) is connected to the lower port of the vent hole (21).

4. The improved internal structure of the buffer tank according to claim 3, characterized in that, A dustproof cover (3) is fastened to the upper port of the vent (21), and a dustproof net is installed on the dustproof cover (3).

5. The improved internal structure of the buffer tank according to claim 1, characterized in that, The boiler buffer tank (1) is fixedly connected to an air inlet pipe (7) and an air outlet pipe (9) on both sides.

6. The improved internal structure of the buffer tank according to claim 5, characterized in that, A first solenoid valve (8) is fixedly installed on the air inlet pipe (7), and a second solenoid valve (10) is fixedly installed on the air outlet pipe (9).

7. The improved internal structure of the buffer tank according to claim 1, characterized in that, A controller (4) is fixedly installed on the front side wall of the boiler buffer tank (1), and a pressure gauge (5) is fixedly installed on the left side wall of the boiler buffer tank (1). The pressure gauge (5) is electrically connected to the controller (4).

8. The improved internal structure of the buffer tank according to claim 1, characterized in that, The top plate (66) and bottom plate (67) are both fixedly installed with stiffening ribs (611) at equal intervals around their inner sides. The outer cylinder (64), inner cylinder (65), top plate (66) and bottom plate (67) are all made of high-temperature resistant rubber.

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