Centralized heating automatic control device

Abstract

The utility model belongs to the field of centralized heat supply automation control, particularly relates to a centralized heat supply automation control device, and aims to solve the problems that although water can be treated through a tubular heat exchanger in the prior art, the tubular heat exchanger is positioned in a heat-insulating fixed shell, and when the tubular heat exchanger is damaged or needs to be maintained, the water cannot be treated. In order to solve the problems that in the prior art, maintenance is convenient, and maintenance is inconvenient, the shell-and-tube heat exchanger comprises a shell, a shell-and-tube heat exchanger used for heat exchange and an automatic temperature control valve, one side of the shell is provided with a through hole, and one side of the shell is hinged to a maintenance door facilitating overhauling and maintaining of the shell-and-tube heat exchanger through a hinge; the shell-and-tube heat exchanger is located in the shell, the shell-and-tube heat exchanger can be conveniently overhauled or maintained through the arranged maintenance door, the maintenance door can be fixed through the fixing mechanism, accumulated water on the ground can be effectively prevented from entering the shell through the rain shielding mechanism, and internal equipment is protected against damage.

Description

Technical Field

[0001] The utility model relates to the technical field of centralized heating automation control, in particular to a centralized heating automation control device. Background Art

[0002] At present, urban centralized heating is achieved by using coal in thermal power plants or boiler rooms to heat cold water to a specified temperature, and then the local heating company uses heat exchange to deliver the hot water to end users for heating.

[0003] After searching, the patent with the publication number CN110131783B discloses a high-efficiency and energy-saving centralized heating automation control device. However, the control device has the following deficiencies when used:

[0004] Although water can be treated by a shell-and-tube heat exchanger during use, the shell-and-tube heat exchanger is located in an insulated fixed shell. When the shell-and-tube heat exchanger is damaged or needs maintenance, it is inconvenient to perform maintenance. Utility Model Content

[0005] The purpose of the utility model is to solve the disadvantages of the prior art that although water can be treated by a shell and tube heat exchanger during use, the shell and tube heat exchanger is located in an insulated fixed shell, which makes it inconvenient to maintain the shell and tube heat exchanger when it is damaged or needs maintenance. A centralized heating automation control device is proposed.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A centralized heating automation control device includes a housing, a shell-and-tube heat exchanger for heat exchange, and an automatic temperature control valve. A through hole is formed in one side of the housing. A maintenance door is hingedly connected to one side of the housing to facilitate inspection and maintenance of the shell-and-tube heat exchanger. The shell-and-tube heat exchanger is located within the housing. A circulating water tank, a water inlet tank, and a water outlet tank are fixedly disposed on the bottom inner wall of the housing. Connecting pipes are fixedly disposed on one side of the water inlet tank and the water outlet tank. One end of the connecting pipe passes through a side of the housing. The bottom of the automatic temperature control valve is fixedly connected to the bottom inner wall of the housing.

[0008] A fixing mechanism, the fixing mechanism is provided on the housing and is used to fix the maintenance door;

[0009] The rain shield mechanism is arranged in the shell to prevent water accumulated on the ground from entering the shell.

[0010] In one possible design, the fixing mechanism includes a fixing plate, a fixing cylinder, a fixing ring, a spring and a pull rod, one side of the fixing plate is welded to one side of the maintenance door, a socket is provided on the fixing plate, one side of the fixing cylinder is welded to one side of the outer shell, a movable hole is provided at the top of the fixing cylinder, the outer side of the pull rod is slidably connected to the inner wall of the movable hole, the fixing ring is fixedly sleeved on the pull rod, the spring is sleeved on the pull rod, the top of the spring is fixedly connected to the top inner wall of the fixing cylinder, the bottom end of the spring is fixedly connected to the top of the fixing ring, the bottom end of the pull rod is inserted into the socket of the fixing plate, and the outer side of the fixing ring is slidably connected to the inner wall of the fixing cylinder.

[0011] In one possible design, the rain shield mechanism includes a rain shield for preventing ground water from entering the shell. The bottom of the rain shield is welded to the bottom inner wall of the shell, and the two sides of the rain shield are respectively welded to the two side inner walls of the shell.

[0012] In a possible design, one side of the water inlet tank is fixedly connected to the circulating water inlet of the shell-and-tube heat exchanger through a circulating hot water inlet pipe, the circulating water outlet of the shell-and-tube heat exchanger is fixedly connected to the circulating water tank through a circulating hot water outlet pipe, the heat exchange water inlet of the shell-and-tube heat exchanger is fixedly connected to the circulating water tank through a secondary circulation water inlet pipe, the hot water exchange water outlet of the shell-and-tube heat exchanger is fixedly connected to the water inlet of the automatic temperature control valve through a secondary circulation outlet pipe, the upper end of the automatic temperature control valve is fixedly connected to one side of the water inlet tank through a secondary circulation recovery pipe, one side of the automatic temperature control valve is fixedly connected to one side of the water outlet tank through a secondary circulation drain pipe, one side of the circulating water tank is fixedly provided with a multi-interface water inlet pipe and is connected, one end of the multi-interface water inlet pipe passes through one side of the shell, one side of the water inlet tank is fixedly provided with a multi-interface water outlet pipe and is connected, one end of the multi-interface water outlet pipe passes through one side of the shell, and a pressure pump is fixedly installed on the multi-interface water outlet pipe, the secondary circulation water inlet pipe and the circulating hot water inlet pipe.

[0013] In one possible design, two mounting plates are fixedly provided on both sides of the shell-and-tube heat exchanger, bolts for fixing are passed through the mounting plates, and a plurality of threaded holes are provided on the top inner wall of the shell, and the bolts are threadedly connected to the threaded holes.

[0014] In a possible design, two fixing bases are welded on both sides of the shell to facilitate fixing the shell on the ground, and the fixing bases are provided with mounting holes.

[0015] In a possible design, a pull ring is fixedly provided on the top end of the pull rod for facilitating pulling the pull rod to move.

[0016] In this application, before use, first, fix the shell of the centralized heating automation control device to the ground at the desired position through the mounting holes on the fixing seats on both sides thereof, then use bolts to pass through the mounting plate and screw into the threaded holes on the top inner wall of the shell, firmly install the shell and tube heat exchanger in the shell, connect the circulating hot water inlet pipe to one side of the water inlet tank, and connect its other end to the circulating water inlet hole of the shell and tube heat exchanger, lead the circulating hot water outlet pipe from the circulating water outlet hole of the shell and tube heat exchanger, and connect it to the circulating water tank, lead the secondary circulation water inlet pipe from the circulating water tank, and connect it to the heat exchange inlet of the shell and tube heat exchanger. At the water hole, lead the secondary circulation water outlet pipe from the hot water outlet hole of the shell and tube heat exchanger and connect it to the water inlet of the automatic temperature control valve. Connect the upper end of the automatic temperature control valve to one side of the water inlet tank through the secondary circulation recovery pipe. Fixedly connect one side of the automatic temperature control valve to one side of the water outlet tank through the secondary circulation drain pipe. At the same time, connect the multi-interface water inlet pipe to one side of the circulating water tank, and make sure that its other end passes through one side of the shell for external water source access. Connect the multi-interface water outlet pipe to one side of the water inlet tank, and make sure that its other end passes through one side of the shell for discharge of hot water. Pressure pumps are installed on the circulating water inlet pipe and the circulating hot water inlet pipe to provide the necessary power. The pressure pump and the automatic temperature control valve can be controlled by an external controller. When in use, the primary hot water in the water inlet tank enters the shell and tube heat exchanger, and the circulating water in the secondary circulation pipe network is heat exchanged and reprocessed, so that the circulating water in the secondary circulation pipe network can be reused. The circulating water in the shell and tube heat exchanger passes through the secondary circulation outlet pipe and is then transported to the water inlet tank or the water outlet tank through the automatic temperature control valve. The circulating water in the secondary circulation pipe network is reprocessed, which can effectively save the circulation in the pipe network. Consumption, as well as transportation consumption during reheating. When the shell and tube heat exchanger needs to be inspected or maintained, first pull the pull ring at the top of the pull rod to pull the pull rod out of the socket of the fixed plate. At the same time, the spring is compressed. Then, open the maintenance door through the hinge. Through the set maintenance door, it is convenient to inspect or maintain the shell and tube heat exchanger. After the maintenance is completed, close the maintenance door and release the pull ring. The pull rod is reinserted into the socket of the fixed plate under the elastic force of the spring, so that the maintenance door can be fixed. The rain shield set in the shell can effectively prevent the accumulated water on the ground from entering the shell, protecting the internal equipment from damage.

[0017] The beneficial effects of the present invention are:

[0018] In the utility model, the centralized heating automation control device is configured such that, through the fixing mechanism, the pull ring at the top of the pull rod is pulled upward to move the pull rod, and at the same time the spring is compressed to close the maintenance door, and the pull ring is released so that the pull rod is reinserted into the insertion hole of the fixing plate under the elastic force of the spring, thereby fixing the maintenance door;

[0019] In the utility model, the centralized heating automation control device has a rain shield mechanism, and a rain shield provided inside the housing can effectively prevent ground water from entering the housing, thereby protecting the internal equipment from damage.

[0020] In the utility model, a maintenance door is provided, thereby facilitating the inspection or maintenance of the shell and tube heat exchanger. The maintenance door can be fixed by a fixing mechanism, and the rain shielding mechanism can effectively prevent water accumulated on the ground from entering the shell, thereby protecting the internal equipment from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a centralized heating automation control device proposed by the present utility model without a maintenance door installed;

[0022] Figure 2 This is a schematic diagram of the main structure of a centralized heating automation control device proposed by the utility model;

[0023] Figure 3 This is a side structural diagram of a centralized heating automation control device proposed by the utility model;

[0024] Figure 4 This is a schematic diagram of the top structure of a centralized heating automation control device proposed by the present invention, without the maintenance door installed;

[0025] Figure 5 This is a partial structural diagram of a centralized heating automation control device proposed by the utility model;

[0026] Figure 6 This is a schematic cross-sectional structural diagram of a fixed cylinder of a centralized heating automation control device proposed by the present invention.

[0027] In the figure: 1. Outer casing; 2. Maintenance door; 3. Fixing plate; 4. Connecting pipe; 5. Fixing seat; 6. Multi-connection water outlet pipe; 7. Fixing ring; 8. Pull rod; 9. Spring; 10. Pull ring; 11. Water inlet tank; 12. Water outlet tank; 13. Shell and tube heat exchanger; 14. Rain shield; 15. Threaded hole; 16. Mounting plate; 17. Bolt; 18. Circulating water tank; 19. Multi-connection water inlet pipe; 20. Automatic temperature control valve; 21. Fixing cylinder. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Example 1

[0030] Reference Figure 1-6An automated control device comprises a housing 1, a shell-and-tube heat exchanger 13, and an automatic temperature control valve 20. A through hole is provided on one side of the housing 1, and a maintenance door 2 is hingedly connected thereto, facilitating inspection and maintenance of the shell-and-tube heat exchanger 13. The shell-and-tube heat exchanger 13 is located within the housing 1 and is responsible for heat exchange. A circulating water tank 18, a water inlet tank 11, and a water outlet tank 12 are fixedly mounted on the bottom inner wall of the housing 1. These water tanks are connected to the shell-and-tube heat exchanger 13 and the automatic temperature control valve 20 via pipes, forming a complete heat supply circulation system.

[0031] In order to fix the maintenance door 2, a fixing mechanism is provided. The fixing mechanism includes components such as a fixing plate 3, a fixing cylinder 21, a fixing ring 7, a spring 9 and a pull rod 8. The fixing plate 3 is welded to one side of the maintenance door 2, and a socket is provided on the fixing plate 3. The fixing cylinder 21 is welded to one side of the outer shell 1, and a movable hole is provided at the top thereof. The outer side of the pull rod 8 is slidably connected to the inner wall of the movable hole, the fixing ring 7 is fixedly sleeved on the pull rod 8, and the spring 9 is sleeved on the pull rod 8 and located in the fixing cylinder 21. The top end of the spring 9 is fixedly connected to the top inner wall of the fixing cylinder 21, and the bottom end of the spring 9 is fixedly connected to the top of the fixing ring 7. When the maintenance door 2 is closed, the bottom end of the pull rod 8 can be inserted into the socket of the fixing plate 3, thereby fixing the maintenance door 2. The outer side of the fixing ring 7 is slidably connected to the inner wall of the fixing cylinder 21, ensuring the stability of the pull rod 8 during movement.

[0032] In order to prevent the water on the ground from entering the housing 1, a rain shield mechanism is provided. The rain shield mechanism includes a rain shield 14, the bottom and both sides of which are welded to the bottom inner wall and both side inner walls of the housing 1, respectively, to form an effective waterproof barrier.

[0033] This application is used in the field of centralized heating automation control, and can also be used in other fields applicable to this application.

[0034] Example 2

[0035] refer to Figure 1-6 , based on the improvement of the first embodiment: a centralized heating automation control device, which is used in the field of centralized heating automation control,

[0036] One side of the water inlet tank 11 is fixedly connected to the circulating water inlet of the shell-and-tube heat exchanger 13 via a circulating hot water inlet pipe. The circulating water outlet of the shell-and-tube heat exchanger 13 is fixedly connected to the circulating water tank 18 via a circulating hot water outlet pipe. The heat exchange inlet of the shell-and-tube heat exchanger 13 is fixedly connected to the circulating water tank 18 via a secondary circulation inlet pipe. The hot water exchange outlet of the shell-and-tube heat exchanger 13 is fixedly connected to the water inlet of the automatic temperature control valve 20 via a secondary circulation outlet pipe. The upper end of the automatic temperature control valve 20 is fixedly connected to one side of the water inlet tank 11 via a secondary circulation recovery pipe. One side of the automatic temperature control valve 20 is fixedly connected to one side of the water outlet tank 12 via a secondary circulation drain pipe. A multi-port water inlet pipe 19 is fixedly installed on one side of the circulating water tank 18 and is connected to a multi-port water outlet pipe 6 on one side of the water inlet tank 11. These pipes are fixedly mounted with pressure pumps to provide the necessary power to ensure smooth water circulation in the system.

[0037] Two mounting plates 16 are fixed to either side of the shell-and-tube heat exchanger 13. Bolts 17 are inserted through the mounting plates 16 for securing the heat exchanger. The top inner wall of the housing 1 is provided with multiple threaded holes 15, into which the bolts 17 are threaded, thereby stably mounting the shell-and-tube heat exchanger 13 within the housing 1.

[0038] Both sides of the housing 1 are welded with two fixing bases 5 for fixing the housing 1 on the ground, and mounting holes are provided on the fixing bases 5. The fixing bases 5 are connected to the ground by fasteners such as bolts, so that the housing 1 can be stably fixed on the ground.

[0039] During use, water is first injected into the circulating water tank 18 through the multi-port water inlet pipe 19. Then the pressure pump is started to send water from the circulating water tank 18 through the secondary circulation water inlet pipe to the shell-and-tube heat exchanger 13 for heat exchange. The water after heat exchange flows back to the circulating water tank 18 through the circulating hot water outlet pipe, forming a primary cycle. At the same time, part of the water enters the automatic temperature control valve 20 through the secondary circulation outlet pipe, and then flows back to the water inlet tank 11 through the secondary circulation recovery pipe, forming a secondary cycle. When drainage is required, open the drain port of the automatic temperature control valve 20 and drain the water into the water outlet tank 12. By adjusting the set temperature of the automatic temperature control valve 20 (i.e., the automatic temperature control valve), automatic control of the heating system can be achieved.

[0040] The working principles of the shell and tube heat exchanger 13, the automatic temperature control valve 20 and the pressure pump are the same as those of the authorization number CN110131783B, and will not be repeated here.

[0041] However, as is well known to those skilled in the art, the working principles and wiring methods of the shell and tube heat exchanger 13, the automatic temperature control valve 20 and the pressure pump are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0042] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A centralized heating automation control device, comprising a housing (1), a shell and tube heat exchanger (13) for heat exchange, and an automatic temperature control valve (20), characterized in that: A through hole is provided on one side of the shell (1), and a maintenance door (2) is hingedly connected to one side of the shell (1) for facilitating the inspection and maintenance of the shell-and-tube heat exchanger (13). The shell-and-tube heat exchanger (13) is located in the shell (1). A circulating water tank (18), a water inlet tank (11), and a water outlet tank (12) are fixedly provided on the bottom inner wall of the shell (1). A connecting pipe (4) is fixedly provided on one side of the water inlet tank (11) and the water outlet tank (12). One end of the connecting pipe (4) passes through one side of the shell (1), and the bottom of the automatic temperature control valve (20) is fixedly connected to the bottom inner wall of the shell (1). A fixing mechanism, the fixing mechanism being arranged on the housing (1) and being used to fix the maintenance door (2); A rain shielding mechanism is provided in the housing (1) and is used to prevent water accumulated on the ground from entering the housing (1).

2. A centralized heating automation control device according to claim 1, characterized in that: The fixing mechanism comprises a fixing plate (3), a fixing cylinder (21), a fixing ring (7), a spring (9) and a pull rod (8); one side of the fixing plate (3) is welded to one side of the maintenance door (2); a socket is provided on the fixing plate (3); one side of the fixing cylinder (21) is welded to one side of the housing (1); a moving hole is provided at the top of the fixing cylinder (21); the outer side of the pull rod (8) is slidably connected to the inner wall of the moving hole; the fixing ring (7) is fixedly sleeved on the pull rod (8); the spring (9) is sleeved on the pull rod (8); the top of the spring (9) is fixedly connected to the inner wall of the top of the fixing cylinder (21); the bottom end of the spring (9) is fixedly connected to the top of the fixing ring (7); the bottom end of the pull rod (8) is inserted into the socket of the fixing plate (3); the outer side of the fixing ring (7) is slidably connected to the inner wall of the fixing cylinder (21).

3. A centralized heating automation control device according to claim 1, characterized in that: The rain shield mechanism comprises a rain shield (14) for preventing water accumulated on the ground from entering the housing (1); the bottom of the rain shield (14) is welded to the bottom inner wall of the housing (1); and the two sides of the rain shield (14) are respectively welded to the two inner walls of the housing (1).

4. A centralized heating automation control device according to claim 1, characterized in that: One side of the water inlet tank (11) is fixedly connected to the circulating water inlet hole of the shell-and-tube heat exchanger (13) through a circulating hot water inlet pipe, the circulating water outlet hole of the shell-and-tube heat exchanger (13) is fixedly connected to the circulating water tank (18) through a circulating hot water outlet pipe, the heat exchange water inlet hole of the shell-and-tube heat exchanger (13) is fixedly connected to the circulating water tank (18) through a secondary circulation water inlet pipe, the hot water exchange water outlet hole of the shell-and-tube heat exchanger (13) is fixedly connected to the water inlet of the automatic temperature control valve (20) through a secondary circulation water outlet pipe, and the upper end of the automatic temperature control valve (20) is connected to the water inlet tank through a secondary circulation recovery pipe. (11) is fixedly connected to one side of the automatic temperature control valve (20), one side of the automatic temperature control valve (20) is fixedly connected to one side of the water outlet tank (12) through the secondary circulation drainage pipe, one side of the circulating water tank (18) is fixedly provided with a multi-interface water inlet pipe (19) and is connected, one end of the multi-interface water inlet pipe (19) passes through one side of the shell (1), one side of the water inlet tank (11) is fixedly provided with a multi-interface water outlet pipe (6) and is connected, one end of the multi-interface water outlet pipe (6) passes through one side of the shell (1), and a pressure pump is fixedly installed on the multi-interface water outlet pipe (6), the secondary circulation water inlet pipe and the circulating hot water inlet pipe.

5. A centralized heating automation control device according to claim 1, characterized in that: Two mounting plates (16) are fixedly provided on both sides of the shell-and-tube heat exchanger (13), and bolts (17) for fixing are passed through the mounting plates (16). A plurality of threaded holes (15) are provided on the top inner wall of the shell (1), and the bolts (17) are threadedly connected to the threaded holes (15).

6. A centralized heating automation control device according to claim 1, characterized in that: Two fixing seats (5) are welded on both sides of the housing (1) to facilitate fixing the housing (1) on the ground, and mounting holes are provided on the fixing seats (5).

7. A centralized heating automation control device according to claim 2, characterized in that: A pull ring (10) is fixedly provided on the top end of the pull rod (8) for facilitating pulling the pull rod (8) to move.

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