A heat storage tank for combined heat and power central heating

Abstract

The utility model discloses a kind of heat and power cogeneration central heating uses heat storage tank, including tank body, the tank body bottom end has protective box, driving motor is fixed in the protective box.Affinity effect is at:The utility model is adjusted protective mechanism by setting a group of detection strip by telescopic folding cover, polished rod and measured float ball composition, when the position of heat insulation plate is adjusted according to actual situation, measured float ball in upside is contacted with heat insulation plate by gravity, heat insulation plate drives measured float ball to move under the action of screw drive, and then the accurate adjustment of heat insulation plate position is realized by the detection position of measured float ball, while in use, measured float ball can also detect the liquid level of hot water and cold water, and telescopic protective cover can always protect screw rod, avoid being corroded by being in water for long time, ensure its transmission performance, improve the use performance of heat storage tank.

Description

Technical Field

[0001] This utility model relates to the field of heat storage tank technology, specifically to a heat storage tank for centralized heating in combined heat and power generation. Background Technology

[0002] Combined heat and power (CHP) refers to a power plant that both generates electricity and uses the steam produced by a steam turbine generator to supply heat to users. This process simultaneously produces electricity and heat, saving fuel compared to separate electricity and heat production methods. The steam source for external heat supply is either extracted steam from an extraction-type steam turbine or exhaust steam from a back-type steam turbine. Pressures are typically divided into two categories: 0.78–1.28 MPa and 0.12–0.25 MPa. The former supplies industrial production, while the latter supplies residential heating. CHP steam has no cold source loss, thus increasing thermal efficiency to up to 85%. CHP has significant advantages, particularly in achieving a high level of energy efficiency and making a substantial contribution to environmental protection.

[0003] In order to ensure the adjustable space between hot and cold water in existing heat storage tanks used in combined heat and power (CHP) district heating, an adjustable heat insulation plate is usually installed inside the tank. The heat insulation plate is raised and lowered by a screw drive to adjust the space inside the tank. However, in this method, the screw is always immersed in water during the adjustment process, which can easily lead to corrosion over time, affecting its transmission performance. At the same time, it is impossible to detect the adjustment position of the heat insulation plate, resulting in low space adjustment accuracy and poor performance of the heat storage tank. Therefore, there is an urgent need for a heat storage tank for CHP district heating to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to provide a heat storage tank for centralized heating in cogeneration, in light of the current state of the technology.

[0006] (II) Technical Solution

[0007] This utility model is achieved through the following technical solution: This utility model proposes a heat storage tank for centralized heating in combined heat and power generation, including a tank body, a protective box at the bottom of the tank body, a drive motor fixed inside the protective box, a main gear mounted on the output shaft of the drive motor, four sets of auxiliary gears arranged outside the main gear, a screw fixed on the auxiliary gear, a screw block sleeved on the screw, a sleeve fixed at the top of the screw block, a heat insulation plate fixed at the top of the sleeve, a sealing ring installed on the outer wall of the heat insulation plate, a smooth rod also provided on the heat insulation plate, two sets of measuring floats sleeved on the smooth rod, and a telescopic folding sleeve installed between the bottom of the screw block and the bottom wall of the tank body.

[0008] Furthermore, the drive motor is fixed inside the protective box by bolts, and the output shaft of the drive motor is fixedly connected to the main gear.

[0009] Furthermore, the secondary gear meshes with the primary gear, the bottom end of the screw is fixedly connected to the secondary gear, and the screw is connected to the bottom wall of the tank using a sealed bearing.

[0010] Furthermore, the screw block and the screw rod are connected by threads, the telescopic folding sleeve is sealed and fixedly connected to the screw block and the bottom wall of the tank, and the screw rod is located inside the telescopic folding sleeve.

[0011] Furthermore, the sleeve is welded to the top of the screw block, the heat insulation plate is fixed to the top of the sleeve by screws, and the sealing ring is bonded to the outer wall of the heat insulation plate.

[0012] Furthermore, the light rod is fixed inside the tank, the light rod passes through the heat insulation plate, and a sealing strip is provided at the connection between the heat insulation plate and the light rod.

[0013] Furthermore, the measuring float is fitted onto the optical rod, and two sets of upper external connecting pipes are reserved at the upper end of the tank, which are respectively the inlet and outlet of hot water.

[0014] Furthermore, two sets of lower external connecting pipes are reserved on the outer wall of the bottom end of the tank, which are respectively the inlet and outlet of cold water.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This invention employs a detection strip adjustment and protection mechanism consisting of a telescopic folding sleeve, a smooth rod, and a measuring float. When adjusting the position of the heat insulation plate according to actual conditions, the measuring float, located on the upper side, contacts the heat insulation plate due to gravity. The heat insulation plate, driven by a threaded drive, moves the measuring float, thereby achieving precise adjustment of the heat insulation plate position through the detection position of the measuring float. Simultaneously, during use, the measuring float can also detect the liquid levels of hot and cold water, while the telescopic protective sleeve always protects the screw, preventing it from being corroded by prolonged immersion in water, ensuring its transmission performance, and improving the performance of the heat storage tank. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a heat storage tank for centralized heating in a combined heat and power plant, as described in this utility model.

[0019] Figure 2This is a schematic diagram of the protective box and internal structure of the heat storage tank for centralized heating in a cogeneration system, as described in this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of a heat storage tank for centralized heating in a combined heat and power plant, as described in this utility model, after removing the telescopic folding sleeve.

[0021] The annotations in the attached figures are explained as follows:

[0022] 1. Tank body; 2. Upper external pipe; 3. Lower external pipe; 4. Protective box; 5. Drive motor; 6. Main gear; 7. Secondary gear; 8. Telescopic folding sleeve; 9. Sleeve; 10. Screw block; 11. Heat insulation plate; 12. Sealing ring; 13. Polished rod; 14. Measuring float; 15. Screw. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] like Figures 1-3 As shown, a heat storage tank for centralized heating in a combined heat and power plant in this embodiment includes a tank body 1. A protective box 4 is located at the bottom of the tank body 1. A drive motor 5 is fixed inside the protective box 4, which can drive a main gear 6 to rotate. The main gear 6 is mounted on the output shaft of the drive motor 5. Four sets of auxiliary gears 7 are arranged outside the main gear 6, which can drive the auxiliary gears 7 to rotate. A screw 15 is fixed on the auxiliary gears 7. A screw block 10 is sleeved on the screw 15 and moves under the action of the thread. A sleeve 9 is fixed to the top of the screw block 10, which can drive the heat insulation plate 1... 1. Move and adjust its position. The top of the sleeve 9 is fixed with a heat insulation plate 11, which divides the inside of the tank 1 into a cold water chamber and a hot water chamber. A sealing ring 12 is installed on the outer wall of the heat insulation plate 11 to seal the heat insulation plate 11 and the tank 1. A smooth rod 13 is also set on the heat insulation plate 11. Two sets of measuring floats 14 are sleeved on the smooth rod 13, which can not only measure the position of the heat insulation plate 11, but also measure the water level. A telescopic folding sleeve 8 is installed between the bottom end of the screw block 10 and the bottom wall of the tank 1 to protect the screw 15.

[0025] like Figures 1-3In this embodiment, the drive motor 5 is fixed inside the protective box 4 by bolts. The output shaft of the drive motor 5 is fixedly connected to the main gear 6, the auxiliary gear 7 meshes with the main gear 6, the bottom end of the screw 15 is fixedly connected to the auxiliary gear 7, the screw 15 is connected to the bottom wall of the tank 1 by a sealed bearing, the screw block 10 is connected to the screw 15 by threads, the telescopic folding sleeve 8 is sealed and fixedly connected to the screw block 10 and the bottom wall of the tank 1, the screw 15 is located inside the telescopic folding sleeve 8, the sleeve 9 is welded to the top of the screw block 10, the heat insulation plate 11 is fixed to the top of the sleeve 9 by screws, and the sealing ring 12 is bonded to the outer wall of the heat insulation plate 11. When the position of the heat insulation plate 11 is adjusted according to the actual situation, the drive motor 5 drives the main gear 6 to rotate, the main gear 6 drives the screw 15 to rotate through the auxiliary gear 7, thereby causing the screw block 10 to move through the sleeve 9 to adjust its position under the action of the threads and the smooth rod 13. The telescopic folding sleeve 8 can hide and protect the screw 15 to prevent it from being corroded by water and ensure its transmission performance.

[0026] like Figures 1-3 In this embodiment, the light rod 13 is fixed inside the tank 1 and passes through the heat insulation plate 11. A sealing strip is provided at the connection between the heat insulation plate 11 and the light rod 13. The measuring float 14 is sleeved on the light rod 13. Two sets of upper external pipes 2 are reserved at the upper end of the tank 1. The two sets of upper external pipes 2 are the inlet and outlet of hot water, respectively. Two sets of lower external pipes 3 are reserved on the outer wall of the bottom end of the tank 1. The two sets of lower external pipes 3 are the inlet and outlet of cold water, respectively. When the position of the heat insulation plate 11 is adjusted according to the actual situation, the measuring float 14 located on the upper side contacts the heat insulation plate 11 by gravity. The heat insulation plate 11 drives the measuring float 14 to move under the action of the thread drive. Then, the position of the heat insulation plate 11 is accurately adjusted by the detection position of the measuring float 14. At the same time, during use, the measuring float 14 can also detect the liquid level of hot water and cold water. The upper external pipe 2 is easy to connect to the hot water pipe, and the lower external pipe 3 is easy to connect to the cold water pipe.

[0027] The specific implementation process of this embodiment is as follows: First, the device is placed in place and connected to the hot water pipe through the upper external pipe 2 and the cold water pipe through the lower external pipe 3. An external power supply is connected. During use, when the position of the heat insulation plate 11 is adjusted according to the actual situation, the drive motor 5 drives the main gear 6 to rotate. The main gear 6 drives the screw 15 to rotate through the secondary gear 7. In turn, the screw block 10, under the action of the thread and the smooth rod 13, drives the heat insulation plate 11 to move through the sleeve 9 to adjust its position. The telescopic folding sleeve 8 can hide and protect the screw 15 to prevent it from being corroded by water and ensure its transmission performance. During the adjustment process, the measuring float 14 located on the upper side contacts the heat insulation plate 11 by gravity. The heat insulation plate 11 drives the measuring float 14 to move under the action of the thread. The position of the heat insulation plate 11 is accurately adjusted by the detection position of the measuring float 14. At the same time, during use, the measuring float 14 can also detect the liquid level of hot water and cold water, which has high performance.

[0028] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat storage tank for centralized heating in a combined heat and power plant, characterized in that: The device includes a tank (1), a protective box (4) at the bottom of the tank (1), a drive motor (5) fixed inside the protective box (4), a main gear (6) installed on the output shaft of the drive motor (5), four sets of auxiliary gears (7) arranged on the outside of the main gear (6), a screw (15) fixed on the auxiliary gear (7), a screw block (10) sleeved on the screw (15), a sleeve (9) fixed at the top of the screw block (10), a heat insulation plate (11) fixed at the top of the sleeve (9), a sealing ring (12) installed on the outer wall of the heat insulation plate (11), a smooth rod (13) also arranged on the heat insulation plate (11), two sets of measuring floats (14) sleeved on the smooth rod (13), and a telescopic folding sleeve (8) installed between the bottom of the screw block (10) and the bottom wall of the tank (1).

2. A heat storage tank for centralized heating in a combined heat and power plant according to claim 1, characterized in that: The drive motor (5) is fixed inside the protective box (4) by bolts, and the output shaft of the drive motor (5) is fixedly connected to the main gear (6).

3. A heat storage tank for centralized heating in a combined heat and power plant according to claim 1, characterized in that: The auxiliary gear (7) meshes with the main gear (6), the bottom end of the screw (15) is fixedly connected to the auxiliary gear (7), and the screw (15) is connected to the bottom wall of the tank (1) by a sealed bearing.

4. A heat storage tank for centralized heating in a combined heat and power plant according to claim 1, characterized in that: The screw block (10) and the screw rod (15) are connected by threads. The telescopic folding sleeve (8) is sealed and fixedly connected to the screw block (10) and the bottom wall of the tank body (1). The screw rod (15) is located inside the telescopic folding sleeve (8).

5. A heat storage tank for centralized heating in a combined heat and power plant according to claim 4, characterized in that: The sleeve (9) is welded to the top of the screw block (10), the heat insulation plate (11) is fixed to the top of the sleeve (9) by screws, and the sealing ring (12) is bonded to the outer wall of the heat insulation plate (11).

6. A heat storage tank for centralized heating in a combined heat and power plant according to claim 5, characterized in that: The light rod (13) is fixed inside the tank (1), and the light rod (13) passes through the heat insulation plate (11). A sealing strip is provided at the connection between the heat insulation plate (11) and the light rod (13).

7. A heat storage tank for centralized heating in a combined heat and power plant according to claim 6, characterized in that: The measuring float (14) is fitted onto the optical rod (13), and two sets of upper external pipes (2) are reserved at the upper end of the tank (1). The two sets of upper external pipes (2) are the inlet and outlet of hot water, respectively.

8. A heat storage tank for centralized heating in a combined heat and power plant according to claim 7, characterized in that: Two sets of lower external pipes (3) are reserved on the outer wall of the bottom end of the tank (1).

9. A heat storage tank for centralized heating in a combined heat and power plant according to claim 8, characterized in that: The two sets of lower external pipes (3) are respectively the inlet and outlet of cold water.

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