Pressure-controllable threaded pipe heat exchanger

Abstract

The utility model discloses a pressure controllable threaded pipe heat exchanger which comprises a heat exchange tank and a front end cover fixedly arranged at one end of the heat exchange tank, a rear end cover is fixedly arranged at the other end of the heat exchange tank, a pressure control mechanism used for controlling the pressure of a thermal medium is fixedly installed on the front end cover, and abutting frames are fixedly arranged on the two sides of the inner wall of the heat exchange tank. According to the pressure-controllable threaded pipe heat exchanger, the pressure control mechanism is additionally arranged at the hot medium inlet of the threaded pipe heat exchanger, the fluid pressure of hot media entering the heat exchanger can be automatically balanced according to the types of the circulating hot media, control is accurate and stable, and the pressure-controllable threaded pipe heat exchanger is high in practicability. The thread is arranged on the surface of the thread heat exchange pipe and is spiral, so that the circulation time of a heat medium in the heat exchanger can be remarkably prolonged, the heat medium is in full contact with a cooling medium, and the heat exchanger has the advantages of being remarkable in heat exchange effect, safe, stable and convenient to maintain in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of threaded tube heat exchangers, in particular to a pressure-controllable threaded tube heat exchanger. Background Art

[0002] Threaded tube heat exchanger is a device used for fluid heat exchange and is widely used. Common threaded tube heat exchangers are mainly composed of a heat exchange tank body and a threaded heat exchange tube. The heat exchange tank body is connected to a cooling water inlet and outlet. The surface of the threaded heat exchange tube is provided with threads, and hot fluid flows inside. The surface threads increase the surface area, thereby increasing the contact area with the cooling water, thereby improving the heat exchange efficiency. For example, a threaded tube heat exchanger with application number CN201621278837.3 includes a first shell assembly, a second shell assembly, a support foot, a threaded tube, an insulation sleeve, screws, nuts and a sealing ring; the first shell assembly includes a first shell, a first end cover, a pressure regulating valve, a hydraulic gauge and a guide plate; the second shell assembly includes a second shell, a second end cover, a flow meter and a thermometer; the above common types of threaded tube heat exchangers still have the following deficiencies in actual applications:

[0003] The heat medium inlet of the threaded tube heat exchanger is mostly a straight tube, and the flow pressure entering the heat exchanger is uncontrollable. When the pressure of the hot fluid is too high, the circulation speed in the heat exchange tube is fast, and the contact time with the cooling medium is short, and sufficient contact and heat exchange cannot be achieved, which affects the heat exchange effect. Utility Model Content

[0004] The utility model aims to provide a pressure-controllable threaded tube heat exchanger to solve the problem of uncontrollable pressure of heat medium circulation and heat exchange in the existing threaded tube heat exchanger mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure-controllable threaded tube heat exchanger, comprising a heat exchange tank and a front end cover fixedly arranged at one end of the heat exchange tank, a rear end cover fixedly arranged at the other end of the heat exchange tank, a pressure control mechanism for controlling the pressure of the heat medium fixedly installed on the front end cover, brackets fixedly arranged on both sides of the inner wall of the heat exchange tank, sealing plates fixedly arranged on the outer sides of the two brackets, a plurality of threaded heat exchange tubes fixedly installed between the two sealing plates, a cooling water inlet pipe fixedly connected to one side of the top end of the heat exchange tank, a cooling water discharge pipe fixedly connected to one side of the bottom end of the heat exchange tank, and a liquid discharge pipe fixedly connected to the rear end cover.

[0006] Preferably, the pressure control mechanism includes a pressure control valve body and a heat medium inlet fixedly connected to one end of the pressure control valve body, the other end of the pressure control valve body is fixedly connected to a heat medium outlet, a valve seat is fixedly provided at the top of the pressure control valve body, a control box is fixedly provided at the top of the valve seat, a valve core assembly for controlling the flow of heat medium is installed inside the valve seat, and a gear drive assembly is fixedly installed inside the control box.

[0007] Preferably, the valve core assembly includes a valve stem and a valve plug fixedly arranged at the bottom end of the valve stem, and the valve plug is arranged inside the pressure control valve body; the pressure control is stable.

[0008] Preferably, the gear drive assembly includes a ball screw rotatably arranged inside the control box, the middle part of the ball screw is transmission-connected with a screw sleeve, the screw sleeve is fixedly arranged on the top of the valve stem, the bottom end of the ball screw is fixedly arranged with a worm gear, a servo motor is fixedly installed on the bottom of the inner wall of the control box, a worm is fixedly installed on the output end of the servo motor, and the worm and the worm gear are meshingly connected; the transmission is stable, and the pressure can be automatically controlled.

[0009] Preferably, a single-chip microcomputer controller is fixedly mounted on the front side of the control box, and the servo motor is electrically connected to the single-chip microcomputer controller.

[0010] Preferably, the heat medium outlet is fixedly connected to the front end cover, a pressure monitor is fixedly installed in the middle of the heat medium outlet, and the pressure monitor is electrically connected to the single-chip controller; it can display the pressure of the heat medium entering the heat exchange tank in real time, and the pressure control is more accurate.

[0011] Preferably, the threaded heat exchange tube is arranged in a spiral shape; the circulation time in the heat exchange tank is long, and the heat exchange is uniform and sufficient.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The threaded tube heat exchanger is equipped with a pressure control mechanism at the inlet of the heat medium, which can automatically balance the fluid pressure of the heat medium entering the heat exchanger according to the type of circulating heat medium, and the control is precise and stable. The surface of the threaded heat exchange tube is provided with threads and is arranged in a spiral shape, which can significantly increase the circulation time of the heat medium in the heat exchanger and make the contact with the cooling medium more complete. It has the characteristics of significant heat exchange effect, safety and stability, and easy later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the threaded tube heat exchanger of the utility model;

[0015] Figure 2 This is a front cross-sectional view of the threaded tube heat exchanger of the utility model;

[0016] Figure 3 It is a front cross-sectional view of the pressure control mechanism of the utility model;

[0017] Figure 4 It is an enlarged view of part A of the utility model.

[0018] In the figure: 1. heat exchange tank; 2. front end cover; 3. pressure control mechanism; 31. pressure control valve body; 32. control box; 33. valve stem; 34. valve plug; 35. screw sleeve; 36. heat medium inlet; 37. heat medium outlet; 38. pressure monitor; 39. ball screw; 310. servo motor; 311. worm; 312. worm gear; 313. valve seat; 4. rear end cover; 5. drain pipe; 6. cooling water inlet pipe; 7. cooling water drain pipe; 8. single chip controller; 9. support frame; 10. sealing plate; 11. threaded heat exchange tube. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1-4 The utility model provides a pressure-controllable threaded tube heat exchanger, comprising a heat exchange tank 1 and a front end cover 2 fixedly arranged at one end of the heat exchange tank 1, a rear end cover 4 fixedly arranged at the other end of the heat exchange tank 1, a pressure control mechanism 3 for controlling the pressure of the heat medium fixedly installed on the front end cover 2, both sides of the inner wall of the heat exchange tank 1 are fixedly arranged with brackets 9, the outer sides of the two brackets 9 are fixedly arranged with sealing plates 10, a plurality of threaded heat exchange tubes 11 are fixedly installed between the two sealing plates 10, one side of the top end of the heat exchange tank 1 is fixedly connected with a cooling water inlet pipe 6, one side of the bottom end of the heat exchange tank 1 is fixedly connected with a cooling water discharge pipe 7, the rear end cover 4 is fixedly connected with a drain pipe 5, and the threaded heat exchange tube 11 is arranged in a spiral shape;

[0021] When in use, the heat medium enters the front end cover 2 through the pressure control mechanism 3, and then enters the threaded heat exchange tube 11. The cooling water enters from the cooling water inlet pipe 6, flows out through the cooling water discharge pipe 7, and exchanges heat with the heat medium in the reverse direction. The heat medium after heat exchange enters the rear end cover 4 and is finally discharged from the drain pipe 5.

[0022] See also Figure 1 , Figure 2 and Figure 3Further, the pressure control mechanism 3 includes a pressure control valve body 31 and a heat medium inlet 36 fixedly connected to one end of the pressure control valve body 31, and the other end of the pressure control valve body 31 is fixedly connected to a heat medium outlet 37, a valve seat 313 is fixedly provided at the top of the pressure control valve body 31, a control box 32 is fixedly provided at the top of the valve seat 313, a valve core assembly for controlling the flow of the heat medium is installed inside the valve seat 313, and a gear drive assembly is fixedly installed inside the control box 32;

[0023] When in use, the heat medium enters the pressure control valve body 31 through the heat medium inlet 36, passes through the flow limiting pressure control of the valve plug 34, and enters the front end cover 2 through the heat medium outlet 37 to realize the circulation and heat exchange of the heat medium. The gear drive assembly is used to control the opening degree of the valve plug 34, and the pressure of the heat medium in the pipeline can be monitored in real time by the pressure monitor 38.

[0024] See also Figure 2 , Figure 3 and Figure 4 , further, the valve core assembly includes a valve stem 33 and a valve plug 34 fixedly arranged at the bottom end of the valve stem 33, the valve plug 34 is arranged inside the pressure control valve body 31, the gear drive assembly includes a ball screw 39 rotatably arranged inside the control box 32, the middle part of the ball screw 39 is transmission-connected with a screw sleeve 35, the screw sleeve 35 is fixedly arranged at the top end of the valve stem 33, the bottom end of the ball screw 39 is fixedly arranged with a worm gear 312, a servo motor 310 is fixedly installed at the bottom of the inner wall of the control box 32, a worm 311 is fixedly installed at the output end of the servo motor 310, the worm 311 and the worm gear 312 are meshingly connected, a single-chip microcomputer controller 8 is fixedly installed on the front side of the control box 32, the servo motor 310 is electrically connected to the single-chip microcomputer controller 8, the heat medium outlet 37 is fixedly connected to the front end cover 2, a pressure monitor 38 is fixedly installed in the middle of the heat medium outlet 37, and the pressure monitor 38 is electrically connected to the single-chip microcomputer controller 8;

[0025] During use, when adjusting the pressure of the heat medium entering the heat exchanger, the servo motor 310 will drive the worm 311 to rotate, and then drive the ball screw 39 to rotate through the worm gear 312. At this time, the screw sleeve 35 will drive the valve plug 34 to move in the pressure control valve body 31 through the valve stem 33, adjust the opening and closing size, and then control the pressure of the heat medium to avoid problems such as excessive pressure, too fast flow rate, short heat exchange time, and poor heat exchange effect.

[0026] When the embodiment of the present application is in use: the heat medium enters the pressure control valve body 31 through the heat medium inlet 36, passes through the flow limiting pressure control of the valve plug 34, enters the front end cover 2 through the heat medium outlet 37, and then enters the threaded heat exchange tube 11, and spirally circulates in the threaded heat exchange tube 11. Cooling water enters from the cooling water inlet pipe 6, flows out through the cooling water discharge pipe 7, and circulates in the opposite direction with the heat medium for heat exchange. The contact time is long and the heat exchange is sufficient. The heat medium after heat exchange enters the rear end cover 4 and is finally discharged from the drain pipe 5.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure-controllable threaded tube heat exchanger, comprising a heat exchange tank (1) and a front end cover (2) fixedly arranged at one end of the heat exchange tank (1), and a rear end cover (4) fixedly arranged at the other end of the heat exchange tank (1), characterized in that: A pressure control mechanism (3) for controlling the pressure of the heat medium is fixedly mounted on the front end cover (2), supports (9) are fixedly mounted on both sides of the inner wall of the heat exchange tank (1), sealing plates (10) are fixedly mounted on the outer sides of the two supports (9), and a plurality of threaded heat exchange tubes (11) are fixedly mounted between the two sealing plates (10), a cooling water inlet pipe (6) is fixedly connected to one side of the top end of the heat exchange tank (1), a cooling water discharge pipe (7) is fixedly connected to one side of the bottom end of the heat exchange tank (1), and a liquid discharge pipe (5) is fixedly connected to the rear end cover (4).

2. A pressure-controlled threaded tube heat exchanger according to claim 1, characterized in that: The pressure control mechanism (3) comprises a pressure control valve body (31) and a heat medium inlet (36) fixedly connected to one end of the pressure control valve body (31); the other end of the pressure control valve body (31) is fixedly connected to a heat medium outlet (37); a valve seat (313) is fixedly arranged at the top end of the pressure control valve body (31); a control box (32) is fixedly arranged at the top end of the valve seat (313); a valve core assembly for controlling the flow of heat medium is installed inside the valve seat (313); and a gear drive assembly is fixedly installed inside the control box (32).

3. A pressure-controlled threaded tube heat exchanger according to claim 2, characterized in that: The valve core assembly comprises a valve stem (33) and a valve plug (34) fixedly arranged at the bottom end of the valve stem (33); the valve plug (34) is arranged inside the pressure control valve body (31).

4. A pressure-controlled threaded tube heat exchanger according to claim 3, characterized in that: The gear drive assembly comprises a ball screw (39) rotatably arranged inside a control box (32); a middle portion of the ball screw (39) is transmission-connected with a screw sleeve (35); the screw sleeve (35) is fixedly arranged at the top end of a valve stem (33); a worm gear (312) is fixedly arranged at the bottom end of the ball screw (39); a servo motor (310) is fixedly installed at the bottom of an inner wall of the control box (32); a worm gear (311) is fixedly installed at an output end of the servo motor (310); and the worm gear (311) is meshingly connected with the worm gear (312).

5. A pressure-controlled threaded tube heat exchanger according to claim 4, characterized in that: A single-chip microcomputer controller (8) is fixedly mounted on the front side of the control box (32), and the servo motor (310) is electrically connected to the single-chip microcomputer controller (8).

6. The pressure-controlled threaded tube heat exchanger according to claim 5, characterized in that: The heat medium outlet (37) is fixedly connected to the front end cover (2), and a pressure monitor (38) is fixedly installed in the middle of the heat medium outlet (37). The pressure monitor (38) is electrically connected to the single chip controller (8).

7. The pressure-controlled threaded tube heat exchanger according to claim 1, characterized in that: The threaded heat exchange tube (11) is arranged in a spiral shape.

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