CN212057767U - A phase change water tank with variable heat storage - Google Patents

Abstract

The utility model discloses a phase-change water tank with variable heat storage capacity, which comprises a shell, an inner container, a water inlet pipeline and a water outlet pipeline; a connecting rod control device is arranged in the liner and comprises a horizontal shaft rod and a vertical shaft rod, sleeves are arranged on the horizontal shaft rod, each sleeve is connected with a motor through a rod piece, the sleeves are connected with a flat plate through connecting rods, energy storage rods filled with phase change materials are uniformly arranged on the flat plate, and fins are arranged outside the energy storage rods; the horizontal shaft rod is provided with a displacement sensor, the inner container is internally provided with a temperature sensor, the shell is provided with a control element, and the control element is respectively and electrically connected with the motor, the temperature sensor and the displacement sensor. The utility model discloses combine fin and energy storage stick in the inner bag, can not only improve heat exchange efficiency, still balanced the temperature distribution and the stress distribution of whole inner bag simultaneously, improved the stability of heat storage water tank work simultaneously, and the degree of depth that utilizes link control device can adjust the energy storage stick immersion water controls the size of water tank heat storage volume.

Description

A phase change water tank with variable heat storage

technical field

The utility model relates to the technical field of phase-change energy storage water tanks, in particular to a phase-change water tank with variable heat storage.

Background technique

The water tank commonly used in the existing heat pump system is too large in size, occupies a large area, requires a large amount of water injection, and has limited energy storage capacity. control; compared with sensible heat energy storage, the advantages of phase change energy storage lie in high energy storage density, small size, constant temperature control, significant energy saving effect, wide selection range of phase change temperature, easy control, etc.; phase change energy storage technology can Solving the problem of mismatch between thermal energy supply and demand is an important measure to improve energy utilization efficiency; and due to the influence of cold air in winter, the temperature is low, the temperature difference between day and night is large, and the load is relatively small in the early cold period; in the severe cold period, with the increase of heating days The load gradually increased and reached a peak value; the load gradually decreased at the end of the cold period. When the load changes, the heat provided by the variable phase-change water tank needs to be adjusted accordingly, but it is difficult to achieve with the existing technology.

Using paraffin as a heat storage medium, it has the characteristics of high latent heat of phase transition, almost no supercooling, low vapor pressure during melting, not easy to occur chemical reaction, good chemical stability, no phase separation, corrosion and low cost. There are many phase change points, which can be applied in a wide range of fields; the use of fins can improve the thermal conductivity of the energy storage unit; but we want to give full play to the good heat storage effect of the phase change hot water storage tank and make the heat storage of the water tank controllable It is necessary to control the degree of contact between the hot water entering the phase-change hot water storage tank and the phase-change material in the water tank to achieve the purpose of changing the heat storage of the phase-change water tank; and the phase-change water tank manufactured in the prior art can also achieve The actual requirements are not met, which ultimately affects the heat storage efficiency of the water tank.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, and propose a phase change water tank with variable heat storage, which organically combines fins and energy storage rods in the inner tank, which can not only improve the heat exchange efficiency, but also improve the heat transfer efficiency. The temperature distribution and stress distribution of the entire inner tank are balanced, and the stability of the hot water storage tank is improved at the same time, and the connecting rod control device can adjust the depth of the energy storage rod immersed in the water to control the heat storage capacity of the water tank.

The purpose of the utility model is achieved through the following technical solutions.

The variable heat storage phase-change water tank of the utility model comprises a water tank body, the water tank body comprises an outer shell and an inner tank, the outer shell is provided with a water inlet pipe and a water outlet pipe which are communicated with the inner tank; A connecting rod control device is provided. The connecting rod control device includes a horizontal shaft rod and a vertical shaft rod. The horizontal shaft rod is provided with a sleeve that slides horizontally along it, and each sleeve is connected with a motor through a rod. , the sleeve is connected with a flat plate that moves longitudinally along the vertical shaft through a connecting rod, the flat plate is evenly arranged with an energy storage rod with a phase change material inside, and the outer wall of the energy storage rod is evenly arranged with fins;

A displacement sensor is arranged on the horizontal shaft of the connecting rod control device, a temperature sensor is arranged inside the inner tank, and a control element is arranged on the outer shell of the water tank body, and the control element is respectively connected with the motor, the temperature sensor and the displacement sensor. Make electrical connections.

An insulating material layer is arranged between the outer shell and the inner liner.

The water inlet pipe and the water outlet pipe are provided with a dirt remover, a check valve, a stop valve and a pressure gauge, and the water outlet pipe is also provided with a thermometer.

The left and right ends of the horizontal shaft are respectively fixedly connected to the inner wall of the inner tank, the top end of the vertical shaft is fixedly connected to the inner wall of the inner tank, and two sleeves are provided on the horizontal shaft, and each sleeve is connected by The rod is movably connected with the fixing ring arranged on the top of the flat plate.

The water tank body is provided with a manual control device, the manual control device is connected with the sleeve through a steel rod, and when the control element fails, the handle of the manual control device is rotated to adjust the depth of the energy storage rod immersed in the water; wherein the manual control device is immersed in water. The handle of the control device is set in a position that can be operated by the personnel.

Compared with the prior art, the beneficial effects brought by the technical solution of the present utility model are:

(1) The utility model organically combines the fins and the energy storage rods in the inner tank, enhances the heat exchange efficiency, and balances the temperature distribution and stress distribution of the entire inner tank; a fixed expansion gap is left between the energy storage rods, which increases the The stability of the variable heat storage phase change water tank during operation is improved.

(2) The utility model is provided with a connecting rod control device, a temperature sensor and a displacement sensor. The connecting rod control device is connected and fixed to the inner top of the inner tank, and the movement of the sleeve in the connecting rod control device is controlled by the change of temperature, and the sleeve is changed. position, to change the depth of the energy storage rod immersed in the water.

(3) The utility model is provided with a manual control device, when the control element fails, the phase change water tank with variable heat storage can still be used continuously. When the electric control fails, the handle can be manually controlled to adjust the depth of the energy storage rod immersed in the water.

(4) The volume of the utility model is relatively small, the required amount of water injection is less, and at the same time, it has the characteristics of higher heat storage efficiency and longer service life.

(5) The heat storage of the utility model is controllable, and can be adapted to various systems according to the required heat, and can be applied to solar thermal systems, heat pump systems and domestic hot water systems. Point the appropriate paraffin. Its utilization rate can reach about 70-80%.

Description of drawings

1 is an internal cross-sectional view of a phase change water tank with variable heat storage of the present invention;

Fig. 2 is the internal top view of the variable heat storage phase change water tank of the present invention;

Fig. 3 is the structural representation of the energy storage rod in the present utility model;

4 is a side view of the phase change water tank with variable heat storage of the present invention;

Fig. 5 is the flow chart of the control element in the present invention.

Reference numerals: 1-decontamination device, 2-check valve, 3-pressure gauge, 4-insulation material layer, 5-inner tank, 6-connecting rod control device, 7-energy storage rod, 8-control element, 9-Temperature sensor, 10-thermometer, 11-stop valve, 12-outlet pipe, 13-flow channel, 14-case, 15-inlet pipe, 16-manual control device, 17-fin, 18-plate, 19 - Retaining ring, 601 - horizontal shaft, 602 - vertical shaft, 603 - sleeve, 604 - connecting rod.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 1 , the variable heat storage phase change water tank of the present invention includes a water tank body, and the water tank body includes an outer shell 14 and an inner liner 5 , and a thermal insulation material layer 4 is arranged between the outer shell 14 and the inner liner 5 . . One of the side walls of the outer shell 14 is provided with a water inlet pipe 15 communicating with the interior of the inner tank 5 at a height of 2/3, and the bottom end of the other side wall of the outer shell 14 is provided with a water outlet pipe that communicates with the inner tank 5. 12. The water inlet pipe 15 and the water outlet pipe 12 are provided with a dirt remover 1 , a check valve 2 , a stop valve 11 , and a pressure gauge 3 , and the water outlet pipe 12 is also provided with a thermometer 10 . Among them, the decontamination device 1 is used to remove impurities in the water and ensure the smooth operation of the system. The thermometer 10 is used to detect whether the temperature of the outgoing water meets the requirements of the corresponding system.

A connecting rod control device 6 is arranged inside the inner pot 5 , which is connected with the inner pot 5 and fixed at the top of the inner pot 5 . The connecting rod control device 6 includes a horizontal shaft 601 and a vertical shaft 602, the left and right ends of the horizontal shaft 601 are respectively fixedly connected to the inner wall of the inner pot 5, and the top of the vertical shaft 602 is connected to the inner wall of the inner pot 5. For fixed connection, a space is left between the bottom end of the vertical shaft 602 and the inner container 5 as a circulation channel. The horizontal shaft 601 is provided with two sleeves 603 that slide horizontally along it, each sleeve 603 is connected with a motor through a rod, and each sleeve 603 is connected to the top of the flat plate 18 through a connecting rod 604. The fixed ring 19 is movably connected, and the flat plate 18 can move longitudinally along the vertical shaft 602 .

As shown in FIG. 2 , the energy storage rods 7 are evenly arranged on the flat plate 18 , and a large flat plate is used to connect the energy storage rods 7 in an orderly manner, so as to facilitate the actual operation of the water tank. As shown in FIG. 3 , the energy storage rod 7 is equipped with a phase change material, and the outer wall of the energy storage rod 7 is evenly arranged with fins 17 to improve the heat exchange efficiency. The outer shell of the energy storage rod 7 is made of polymer ethylene material, the phase change material inside the energy storage rod 7 is paraffin, and its phase transition point is 40-45 ° C, and the paraffin wax is arranged in the energy storage rod 7 all over it. 2/3 of the capacity, so that there is a certain margin in the space in the energy storage rod 7 when the phase transition occurs, so as to prevent the energy storage rod 7 from being damaged during the phase transition. The fins 17 are made of metal material and have good thermal conductivity. Both the connecting rod control device 6 and the flat plate 18 are made of steel materials.

The horizontal shaft 601 of the connecting rod control device 6 is provided with a displacement sensor, the inner pot 5 is provided with a temperature sensor 9, and the outer shell of the water tank body is provided with a control element 8, which is respectively connected with the motor. The temperature sensor 9 and the displacement sensor are electrically connected. When the temperature sensed by the probe of the temperature sensor 9 is transmitted to the control element 8, the control element 8 transmits the signal to the displacement sensor, thereby controlling the movement of the sleeve 603 in the link control device 6, changing the position of the sleeve 603, and then changing the storage The depth to which the energy bar 7 is immersed in water.

As shown in FIG. 4 , the water tank body is provided with a manual control device 16. The manual control device 16 is connected to the sleeve 603 through a steel rod. When the control element 8 fails, the handle of the manual control device 16 is rotated to adjust the energy storage. The depth to which rod 7 is immersed in water. Wherein, the handle of the manual control device 16 is set at a position that can be operated by a person, and the manual control device 16 is made of steel material.

The working principle of the variable heat storage phase change water tank of the present invention:

As shown in FIG. 5 , when the temperature of the water in the inner tank 5 of the phase change water tank is lower than 40° C., the connecting rod control device 6 is activated, so that the energy storage rod 7 is immersed in the water. When storing heat, the water exchanges heat with the energy storage rod 7, and the paraffin in the energy storage rod 7 undergoes a phase change after absorbing heat to store heat; when releasing heat, as the temperature of the water in the inner tank 5 drops below the storage temperature When the temperature of the phase change point of the phase change material in the energy bar 7 is reached, the phase change material in the energy storage bar 7 undergoes a phase change and releases heat. When the water temperature in the inner tank 5 of the phase-change water tank exceeds 45° C., the connecting rod control device 6 is reset. When the control element 8 fails, the manual control device 16 can be appropriately adjusted according to the reading of the thermometer 10 on the water outlet pipe 12 to control the depth of the energy storage rod 7 immersed in the water.

The phase change water tank with variable heat storage of the present utility model needs to meet the following requirements:

During the construction of the phase change water tank with variable heat storage of the present invention, it is necessary to ensure that the top end of the connecting rod control device 6 is tightly fixed with the inner tank 5 of the water tank. The electric meter of the control element 8 must be placed in a position where the personnel can see and operate. The setting of the temperature sensor 9 probe should be in a stable flow state as far as possible.

Although the functions and working process of the present utility model are described above in conjunction with the accompanying drawings, the present utility model is not limited to the above-mentioned specific functions and working procedures, and the above-mentioned specific embodiments are only illustrative, not restrictive, Under the inspiration of the present utility model, those of ordinary skill in the art can also make many forms without departing from the scope of the present utility model and the protection scope of the claims, which all belong to the protection of the present utility model.

Claims (5)

1. A phase-change water tank with variable heat storage capacity comprises a water tank body, wherein the water tank body comprises a shell (14) and an inner container (5), and is characterized in that the shell (14) is provided with a water inlet pipeline (15) and a water outlet pipeline (12) which are communicated with the inner container (5); a connecting rod control device (6) is arranged in the inner container (5), the connecting rod control device (6) comprises a horizontal shaft rod (601) and a vertical shaft rod (602), sleeves (603) which horizontally slide along the horizontal shaft rod (601) are arranged on the horizontal shaft rod, each sleeve (603) is connected with a motor through a rod piece, the sleeves (603) are connected with a flat plate (18) which longitudinally moves along the vertical shaft rod (602) through connecting rods (604), energy storage rods (7) filled with phase change materials are uniformly arranged on the flat plate (18), and fins (17) are uniformly arranged on the outer wall of each energy storage rod (7);

the horizontal shaft lever (601) of the connecting rod control device (6) is provided with a displacement sensor, the inner container (5) is internally provided with a temperature sensor (9), the shell (14) of the water tank body is provided with a control element (8), and the control element (8) is electrically connected with the motor, the temperature sensor (9) and the displacement sensor respectively.

2. The variable heat storage phase-change water tank as claimed in claim 1, characterized in that a thermal insulation material layer (4) is arranged between the outer shell (14) and the inner container (5).

3. The variable heat storage quantity phase-change water tank as claimed in claim 1, wherein a dirt separator (1), a check valve (2), a stop valve (11) and a pressure gauge (3) are arranged on the water inlet pipeline (15) and the water outlet pipeline (12), and a thermometer (10) is further arranged on the water outlet pipeline (12).

4. The variable heat storage quantity phase-change water tank as claimed in claim 1, wherein the left end and the right end of the horizontal shaft rod (601) are fixedly connected with the inner wall of the inner container (5) respectively, the top end of the vertical shaft rod (602) is fixedly connected with the inner wall of the inner container (5), two sleeves (603) are arranged on the horizontal shaft rod (601), and each sleeve (603) is movably connected with a fixing ring (19) arranged at the top of the flat plate (18) through a connecting rod (604).

5. The phase-change water tank with variable heat storage capacity of claim 1, characterized in that the water tank body is provided with a manual control device (16), the manual control device (16) is connected with the sleeve (603) through a steel rod, and when the control element (8) fails, a handle of the manual control device (16) is rotated to adjust the depth of the energy storage rod (7) immersed in water; wherein the handle of the manual control device (16) is arranged in a position operable by a person.

Images