Plate heat exchanger with monitoring function

Abstract

The utility model discloses a plate heat exchanger with a monitoring function, belongs to the technical field of heat exchangers, and aims to solve the problem that the running state of the plate heat exchanger is not intuitively observed. Comprising a fixed pressing plate and a movable pressing plate, a plate rubber mat set is arranged between the fixed pressing plate and the movable pressing plate, the fixed pressing plate and the movable pressing plate are connected through a plurality of clamping bolts, and a first-net water supply pipe, a first-net water return pipe, a second-net water supply pipe and a second-net water return pipe are arranged on the fixed pressing plate. The first network water supply pipe is provided with a first supply pressure transmitter and a first supply temperature transmitter, the first network water return pipe is provided with a first return pressure transmitter and a first return temperature transmitter, the second network water supply pipe is provided with a second supply pressure transmitter and a second supply temperature transmitter, and the second network water return pipe is provided with a second return pressure transmitter and a second return temperature transmitter. The operation state of the plate heat exchanger can be visually judged through parameters such as the pressure difference between the first-network water supply pipe and the second-network water supply pipe, work efficiency is improved, treatment is earlier, and energy consumption is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a plate heat exchanger with a monitoring function. Background Art

[0002] Plate heat exchangers are currently widely used in many industries. They have the advantages of simple structure and small footprint, and are also widely used in heating stations of centralized heating systems. Plate heat exchangers are composed of high-efficiency heat transfer corrugated plates that are installed in a stacked form between a fixed pressure plate and a movable pressure plate. The upper and lower guide rods and rear supports form a frame, which is clamped with clamping bolts. At present, during the actual operation of plate heat exchangers, defects such as poor heat transfer efficiency often occur. This is mainly caused by scaling of the internal flow channel of the plate heat exchanger after long-term operation. The only way to judge on site is to observe the readings of the on-site thermometer and on-site pressure gauge of the corresponding interface pipe. There is a certain observation error and it is not easy to analyze and judge. Utility Model Content

[0003] The purpose of this utility model is to provide a plate heat exchanger with a monitoring function to solve the problem that the operating status of the plate heat exchanger is not intuitive. The technical solution adopted by this utility model is as follows:

[0004] A plate heat exchanger with a monitoring function includes a fixed pressing plate, a movable pressing plate, an upper guide rod, a lower crossbeam, a rear support, a plate rubber pad group and a clamping bolt. The fixed pressing plate, the upper guide rod, the rear support and the lower crossbeam are sequentially connected end to end to form a frame. The movable pressing plate is arranged in parallel with the fixed pressing plate. The plate rubber pad group is arranged between the fixed pressing plate and the movable pressing plate. The fixed pressing plate and the movable pressing plate are connected by a plurality of clamping bolts. A first water supply pipe, a first water return pipe, a second water supply pipe and a second water return pipe are arranged on the fixed pressing plate. The first network water supply pipe is provided with a first supply pressure transmitter and a first supply temperature transmitter, the first network return pipe is provided with a first return pressure transmitter and a first return temperature transmitter, the second network water supply pipe is provided with a second supply pressure transmitter and a second supply temperature transmitter, the second network return pipe is provided with a second return pressure transmitter and a second return temperature transmitter, the first supply pressure transmitter, the first supply temperature transmitter, the first return pressure transmitter, the first return temperature transmitter, the second supply pressure transmitter, the second supply temperature transmitter, the second return pressure transmitter and the second return temperature transmitter are electrically connected to the data display touch screen respectively.

[0005] Furthermore, a display box is provided on the fixed pressing plate, and the data display touch screen is fixed on the display box.

[0006] Furthermore, a number of wire grooves are provided on the fixed pressing plate, and the wires of one pressure transmitter, one temperature transmitter, one return pressure transmitter, one return temperature transmitter, two pressure transmitters, two temperature transmitters, two return pressure transmitters and two return temperature transmitters are respectively passed through the wire grooves into the display box and connected to the data display touch screen.

[0007] Furthermore, spare installation screw holes are provided on the first network water supply pipe, the first network return pipe, the second network water supply pipe and the second network return pipe, and the four spare installation screw holes are sealed by screw plugs.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] When the plate heat exchanger is operating normally, the primary pressure transmitter, primary temperature transmitter, secondary pressure transmitter, and secondary temperature transmitter transmit collected data via signal lines to the data display touch screen, which displays operating status parameters. The plate heat exchanger's operating status is analyzed and determined, and an alarm is issued to indicate the status. This facilitates observation and judgment, improving work efficiency. This utility model makes it easier to observe and determine the operating status of the plate heat exchanger, improving work efficiency and enabling timely detection of poor operating conditions of the plate heat exchanger, allowing for earlier resolution and energy conservation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an axonometric drawing of the present utility model;

[0011] Figure 2 It is the main view of the utility model;

[0012] Figure 3 It is a left view of the present utility model.

[0013] In the figure, 1. rear support, 2. clamping bolt, 3. upper guide rod, 4. movable clamping plate, 5. secondary pressure transmitter, 6. secondary temperature transmitter, 7. fixed clamping plate, 8. primary temperature transmitter, 9. primary pressure transmitter, 10. primary water supply pipe, 11. secondary water supply pipe, 12. display box, 13. data display touch screen, 14. primary pressure transmitter, 15. primary temperature transmitter, 16. screw plug, 17. primary return pipe, 18. secondary return pipe, 19. secondary temperature transmitter, 20. secondary pressure transmitter, 21. cable duct, 22. plate rubber gasket assembly, 23. lower crossbeam. DETAILED DESCRIPTION

[0014] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments illustrated in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0015] The connections mentioned in this utility model are divided into fixed connections and detachable connections. The fixed connection refers to a non-detachable connection, including but not limited to conventional fixed connection methods such as hem connection, rivet connection, adhesive connection, and welding connection. The detachable connection refers to but not limited to conventional detachable connection methods such as bolt connection, snap connection, pin connection, and hinge connection. When the specific connection method is not clearly specified, it is assumed that at least one connection method can be found among the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example, a fixed connection may be a welding connection, and a detachable connection may be a bolt connection.

[0016] The present invention will be described in further detail below with reference to the accompanying drawings. The following embodiments are provided to explain the present invention, but the present invention is not limited to the following embodiments.

[0017] Example: Figure 1-3As shown, a plate heat exchanger with a monitoring function includes a fixed pressing plate 7, a movable pressing plate 4, an upper guide rod 3, a lower crossbeam 23, a rear support 1, a plate rubber pad group 22 and a clamping bolt 2. The fixed pressing plate 7, the upper guide rod 3, the rear support 1 and the lower crossbeam 23 are connected end to end in sequence to form a frame. The movable pressing plate 4 is arranged in parallel with the fixed pressing plate 7. The plate rubber pad group 22 is arranged between the fixed pressing plate 7 and the movable pressing plate 4. The fixed pressing plate 7 and the movable pressing plate 4 are connected by a plurality of clamping bolts 2. A first network water supply pipe 10, a first network return pipe 17, a second network water supply pipe 11 and a second network return pipe 18 are provided on the fixed pressing plate 7. The second network water supply pipe 11 and the second network return pipe 18 are connected through the second network water channel of the plate rubber pad group 22. The first network water supply pipe 10 and the first network return pipe 17 are connected. The two water channels are connected through a single water channel of the plate rubber gasket group 22, and the two water channels and the single water channel exchange heat through several plates of the plate rubber gasket group 22. A single water supply pipe 10 is provided with a single pressure transmitter 9 and a single temperature transmitter 8, a single return water pipe 17 is provided with a single return pressure transmitter 14 and a single return temperature transmitter 15, a single water supply pipe 11 is provided with two pressure transmitters 5 and two temperature transmitters 6, and a single return water pipe 18 is provided with two return pressure transmitters 20 and two return temperature transmitters 19. The single pressure transmitter 9, the single temperature transmitter 8, the single return pressure transmitter 14, the single return temperature transmitter 15, the single pressure transmitter 5, the single temperature transmitter 6, the single return pressure transmitter 20 and the single return temperature transmitter 19 are electrically connected to the data display touch screen 13 respectively. The data display touch screen 13 can use the MCG2418 display touch screen, which can respectively display the measurement results of the first supply pressure transmitter 9, the first supply temperature transmitter 8, the first return pressure transmitter 14, the first return temperature transmitter 15, the second supply pressure transmitter 5, the second supply temperature transmitter 6, the second return pressure transmitter 20 and the second return temperature transmitter 19, and has an automatic alarm function when exceeding the set value.

[0018] A display box 12 is provided on the fixed pressing plate 7 , and a data display touch screen 13 is fixed on the display box 12 .

[0019] A plurality of wire grooves 21 are provided on the fixed pressing plate 7. The wires of the first supply pressure transmitter 9, the first supply temperature transmitter 8, the first return pressure transmitter 14, the first return temperature transmitter 15, the second supply pressure transmitter 5, the second supply temperature transmitter 6, the second return pressure transmitter 20 and the second return temperature transmitter 19 are respectively passed through the wire grooves 21 into the display box 12 and connected to the data display touch screen 13.

[0020] Spare installation screw holes are provided on the first network water supply pipe 10 , the first network return pipe 17 , the second network water supply pipe 11 and the second network return pipe 18 , and the four spare installation screw holes are sealed by screw plugs 16 .

[0021] The first supply pressure transmitter 9 is used to measure the first network water supply pressure PT11, the unit is bar, the first supply temperature transmitter 8 is used to measure the first network water supply temperature TT11, the unit is ℃, the first return pressure transmitter 14 is used to measure the first network return water pressure PT12, the unit is bar, the first return temperature transmitter 15 is used to measure the first network return water temperature TT12, the unit is ℃, the second supply pressure transmitter 5 is used to measure the second network water supply pressure PT21, the unit is bar, the second supply temperature transmitter 6 is used to measure the second network water supply temperature TT21, the unit is ℃ The secondary return pressure transmitter 20 is used to measure the secondary network return water pressure PT22, the unit is bar, the secondary return temperature transmitter 19 is used to measure the secondary network return water temperature TT22, the unit is ℃, the primary network supply and return water pressure difference ΔP1 = PT11-PT12, the secondary network supply and return water pressure difference ΔP2 = PT21-PT22, the primary network supply and return water temperature difference ΔT1 = TT11-TT12, the secondary network supply and return water temperature difference ΔT2 = TT21-TT22, the return water end temperature difference between the primary and secondary networks ΔT3 = TT12-TT22℃.

[0022] The operating status of the plate heat exchanger can be determined by measuring the primary network supply and return pressure differential ΔP1, the secondary network supply and return pressure differential ΔP2, and the return water temperature difference ΔT3 between the primary and secondary networks. If ΔP1 and ΔP2 are excessive (>0.5 bar), the plate heat exchanger may be clogged, and the display box will automatically alarm. In this case, the plate pack of the plate heat exchanger should be cleaned promptly, and the alarm will be canceled after the problem is solved. If ΔT3 is greater than 5°C, the heat exchange efficiency of the plate heat exchanger has decreased, and the display box will automatically alarm to check whether the plate heat exchanger and the entire system are faulty. The alarm will be canceled after the problem is solved.

[0023] When the plate heat exchanger is operating normally, the primary pressure transmitter 9, primary temperature transmitter 8, secondary pressure transmitter 5, and secondary temperature transmitter 6 transmit collected data via signal lines to the data display touch screen 13, which displays operating status parameters. The plate heat exchanger's operating status is analyzed and determined, and an alarm is provided to indicate the status. This facilitates observation and judgment, improving work efficiency. The present utility model makes it easier to observe and determine the operating status of the plate heat exchanger, improving work efficiency. It can promptly detect poor operating conditions of the plate heat exchanger, allowing for earlier resolution and energy conservation.

[0024] The above embodiments are merely illustrative of the present invention and do not limit its scope of protection. Those skilled in the art may make partial changes thereto, which are within the scope of protection of the present invention as long as they do not exceed the spirit of the present invention.

Claims

1. A plate heat exchanger with monitoring function, characterized in that: The invention comprises a fixed pressing plate (7), a movable pressing plate (4), an upper guide rod (3), a lower cross beam (23), a rear support (1), a plate rubber pad group (22) and a clamping bolt (2); the fixed pressing plate (7), the upper guide rod (3), the rear support (1) and the lower cross beam (23) are connected end to end in sequence to form a frame; the movable pressing plate (4) is arranged in parallel with the fixed pressing plate (7); the plate rubber pad group (22) is arranged between the fixed pressing plate (7) and the movable pressing plate (4); the fixed pressing plate (7) and the movable pressing plate (4) are connected by a plurality of clamping bolts (2); a first water supply pipe (10), a first water return pipe (17), a second water supply pipe (11) and a second water return pipe (18) are arranged on the fixed pressing plate (7); a first water supply pipe (10) and a second water return pipe (18) are arranged on the fixed pressing plate (7); A supply pressure transmitter (9) and a supply temperature transmitter (8) are provided on the first water supply pipe (10); a return pressure transmitter (14) and a return temperature transmitter (15) are provided on the first water supply pipe (17); a second supply pressure transmitter (5) and a second supply temperature transmitter (6) are provided on the second water supply pipe (11); a second return pressure transmitter (20) and a second return temperature transmitter (19) are provided on the second water return pipe (18); the first supply pressure transmitter (9), the first supply temperature transmitter (8), the first return pressure transmitter (14), the first return temperature transmitter (15), the second supply pressure transmitter (5), the second supply temperature transmitter (6), the second return pressure transmitter (20) and the second return temperature transmitter (19) are respectively electrically connected to the data display touch screen (13).

2. A plate heat exchanger with monitoring function according to claim 1, characterized in that: A display box (12) is provided on the fixed pressing plate (7), and a data display touch screen (13) is fixed on the display box (12).

3. A plate heat exchanger with monitoring function according to claim 2, characterized in that: A plurality of wire grooves (21) are provided on the fixed pressing plate (7), and the wires of a supply pressure transmitter (9), a supply temperature transmitter (8), a return pressure transmitter (14), a return temperature transmitter (15), a second supply pressure transmitter (5), a second supply temperature transmitter (6), a second return pressure transmitter (20) and a second return temperature transmitter (19) are respectively passed through the wire grooves (21) into the display box (12) and connected to the data display touch screen (13).

4. A plate heat exchanger with monitoring function according to any one of claims 1 to 3, characterized in that: The first network water supply pipe (10), the first network water return pipe (17), the second network water supply pipe (11) and the second network water return pipe (18) are all provided with spare installation screw holes, and the four spare installation screw holes are all sealed by screw plugs (16).

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