CN219265069U - Plate heat exchanger and cleaning system - Google Patents

Abstract

The utility model relates to a plate heat exchanger and a cleaning system, wherein heat exchange plates contacted with a plate group and a rear clamping plate are changed from E-shaped plates to D-shaped plates, through holes are formed in four corners of the rear clamping plate, and connecting short pipes on the rear clamping plate are communicated with the plate group, so that the plate heat exchanger is cleaned under the condition of not disassembling the plates; in addition, through the nozzle stub connection with cleaning system and rear splint department washs, has solved traditional plate heat exchanger because the space of plate heat exchanger exit valve and plate heat exchanger connection side is narrow and small when wasing, and the equipment pipeline around is more leads to demolishs the difficulty, and then makes the difficult problem of wasing, has improved cleaning efficiency.

Description

Plate heat exchanger and cleaning system

Technical Field

The utility model belongs to the technical field of equipment overhaul, and particularly relates to a plate heat exchanger and a cleaning system.

Background

The plate heat exchanger is a high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates through which heat is exchanged. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like, and under the condition of the same pressure loss, the heat transfer coefficient is 3-5 times higher than that of the tubular heat exchanger, the occupied area is one third of that of the tubular heat exchanger, and the heat recovery rate can be up to more than 90%.

Because the plate heat exchanger runs for a long time, scaling is easy to occur in the plate sheets or the plate sheets are blocked by sundries, so that the heat exchange efficiency of the plate heat exchanger is seriously affected. In order to clean sundries or dirt in the plate heat exchanger, the plate heat exchanger is usually required to be disassembled, each plate in the plate heat exchanger is removed for cleaning and then is sequentially installed back, because the plate of the plate heat exchanger is usually more, the work load of cleaning one plate after the plate is removed is extremely large and the construction period is long, the installation direction of each plate is easy to be wrong when the plate is assembled back, and the sealing rubber strips of the plates are easy to press deflection to cause medium leakage.

And at present, as most of plate heat exchangers are installed, the space on the connection side of the inlet and outlet valves of the plate heat exchangers is narrow, and the pipelines of surrounding equipment are more and cannot be removed, so that the problem that the inlet and outlet valves of the plate heat exchangers cannot be connected with a cleaning device occurs

Disclosure of Invention

The utility model aims to provide a plate heat exchanger and a cleaning system, which are used for solving the problem that a cleaning device cannot be connected due to the fact that the inlet and outlet sides of the plate heat exchanger are narrow in space in the prior art.

In order to solve the problems, the utility model adopts the following technical scheme;

the utility model provides a plate heat exchanger, includes front splint, back splint and guide arm support, install the slab group between front splint and the back splint, open on the back splint and have a plurality of through-holes, the slab group has the nozzle stub through the back splint intercommunication, and front splint, back splint and slab group are connected through the guide arm each other, the guide arm is fixed on the guide arm support, and slab that slab group and back splint contacted is the D slab.

Further, grooves are formed in the front clamping plate, the rear clamping plate and the plate assembly plate, and the guide rods are clamped in the grooves of the front clamping plate, the rear clamping plate and the plate assembly plate.

Further, the rear clamping plate is clamped on the guide rod, the guide rod comprises an upper guide rod (61) and a lower guide rod, one ends of the upper guide rod and the lower guide rod are fixed on the front clamping plate, and the other ends of the upper guide rod and the lower guide rod are fixed on the guide rod bracket.

Further, bolt holes are formed in the front clamping plate and the rear clamping plate, and the front clamping plate and the rear clamping plate are connected through fasteners.

Further, a valve is arranged on the short pipe.

A cleaning system comprising a plate heat exchanger as described above and a cleaning section.

Further, the cleaning part comprises a corrugated hose communicated with the short pipe of the plate heat exchanger, the corrugated hose is communicated with a water tank, and the water tank is connected with a water pump.

Further, a filter screen is arranged at the communication part of the corrugated hose and the water tank.

Further, a heater is arranged on the water tank, and a water tank drain valve is arranged at the bottom of the water tank.

Compared with the prior art, the utility model has the following beneficial technical effects:

the utility model relates to a plate heat exchanger, which comprises a front clamping plate, a rear clamping plate and a plate sheet group arranged between the front clamping plate and the rear clamping plate, wherein the heat exchange plate sheet contacted with the rear clamping plate is changed from an E-shaped plate sheet to a D-shaped plate sheet, through holes are formed at four corners of the rear clamping plate, and a short connecting pipe on the rear clamping plate is communicated with the plate sheet group, so that the plate heat exchanger is cleaned under the condition of not disassembling the plate sheet; in addition, through the nozzle stub connection with belt cleaning device and rear splint department washs, has solved traditional plate heat exchanger because plate heat exchanger import and export valve and plate heat exchanger connection side's space is narrow and small when wasing, and the equipment pipeline around is more leads to demolishs the difficulty, and then makes the problem of wasing the difficulty.

Preferably, the valve is arranged on the short pipe, and is opened during cleaning and closed during normal operation of the plate heat exchanger, so that the normal operation of the plate heat exchanger is not influenced, and the plate heat exchanger is convenient and quick.

The application still provides a cleaning system, including this application plate heat exchanger and cleaning part, through the nozzle stub intercommunication with cleaning part and plate heat exchanger, realize that plate heat exchanger's online (do not dismantle the slab) washs, improved cleaning efficiency.

Drawings

Fig. 1 is an exploded view of a plate heat exchanger in an embodiment of the present utility model.

Fig. 2 is a diagram illustrating a plate heat exchanger according to an embodiment of the present utility model.

FIG. 3 is a block diagram of a cleaning system in accordance with an embodiment of the present utility model.

Fig. 4 is a D-type plate structure of the plate heat exchanger.

Fig. 5 is a view of the plate structure of the plate heat exchanger E.

In the figure, 1, a front clamping plate; 2. a rear clamping plate; 3. a panel set; 4. a short pipe; 5. a guide rod bracket; 61. an upper guide rod; 62. a lower guide rod; 7. a corrugated hose; 8. a water tank; 9. a water pump; 10. a filter screen; 11. a heater; 12. a water tank drain valve; 13. a fastener; 14. a water outlet valve; 15. a water inlet valve; 16. a cooling medium side inlet/outlet valve.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

As shown in fig. 1, fig. 2, fig. 4 and fig. 5, a plate heat exchanger comprises a front clamping plate 1 and a rear clamping plate 2, wherein a plate group 3 is arranged between the front clamping plate and the rear clamping plate, the plate group 3 is composed of a plurality of plates, through holes are respectively formed in the upper part and the lower part of the plate group 3, through holes are also formed in the corresponding positions of the rear clamping plate 2, the plate group 3 is communicated with a short pipe 4 through the rear clamping plate 2, the upper ends and the lower ends of the front clamping plate 1, the rear clamping plate 2 and the plate group 3 are connected through guide rods, the guide rods are fixed on a guide rod bracket 5, the plate group 3 of the structure is compared with the plate group of the prior structure, the difference is that the plates contacted with the rear clamping plate 2 of the plate group 3 of the structure are replaced by E-shaped plates (shown in fig. 4), and the D-shaped plates are compared with the E-shaped plates, the through holes are respectively formed in the four corners of the plates, so that the front clamping plate 1, the plate group 3 and the rear clamping plate 2 can be communicated with each other, the cleaning system can be connected with the short pipe 4 at the position of the rear clamping plate 2, and the side of the plate heat exchanger is not detached from the side.

As shown in fig. 1 and 2, grooves are formed at the upper ends and the lower ends of the front clamping plate 1, the plate group 3 and the rear clamping plate 2, the guide rods are divided into an upper guide rod 61 and a lower guide rod 62, the upper guide rod 61 is clamped in the grooves at the upper ends of the front clamping plate 1, the plate group 3 and the rear clamping plate 2, the lower guide rod 62 is clamped in the grooves at the lower ends of the front clamping plate 1, the plate group 3 and the rear clamping plate 2, one end of the upper guide rod 61 is fixed on the front clamping plate 1 through bolts, the other end of the upper guide rod 61 is fixed at the upper end of the guide rod bracket 5, one end of the lower guide rod 62 is fixed on the front clamping plate 1 through bolts, the other end of the lower guide rod 62 is fixed at the lower end of the guide rod bracket 5, and the upper guide rod 61 and the lower guide rod 62 are used for limiting the plate group 3 up and down.

As shown in fig. 1 and 2, bolt holes for fastening are formed in the front clamping plate 1 and the rear clamping plate 2, the front clamping plate 1 and the rear clamping plate 2 are fixedly connected through fasteners 13, namely fastening bolts and nuts, the plate group 3 of the front clamping plate bracket and the rear clamping plate bracket is clamped, namely the plate group 3 is limited front and back, meanwhile, the continuity of a channel is ensured, the bolt holes are formed in the edge positions of the front clamping plate 1 and the rear clamping plate 2, and the plate group between the two clamping plates cannot be influenced due to the fact that the screw and the nuts are used for fixing; the valve is arranged on the short pipe 4 communicated with the rear clamping plate 2 and comprises a water inlet valve 15 and a water outlet valve 14, when the plate heat exchanger works normally, the valve is closed, and when the plate heat exchanger is cleaned, the valve is opened, and the short pipe 4 is connected with the cleaning device.

The application also provides a cleaning system which comprises the plate heat exchanger with the structure and a cleaning part;

specifically, as shown in fig. 3, the cleaning part comprises a corrugated hose 7 and a water tank 8, the corrugated hose 7 is communicated with a short pipe 4 on the plate heat exchanger and is also communicated with the water tank 8, a filter screen 10 is further arranged at a water inlet of the corrugated hose 7 communicated with the water tank 8, the filter screen 10 is used for filtering sundries in the plate heat exchanger during cyclic flushing, a water pump 9 is connected to the water tank 8, a heater 11 is further arranged on the water tank 8, and a water tank drain valve 12 is arranged at the bottom of the water tank 8.

The working process and principle of the cleaning system based on the plate heat exchanger are as follows:

when the plate heat exchanger is cleaned, the inlet and outlet valves 16 on the cooling medium side of the plate heat exchanger are closed to isolate the plate heat exchanger, the valves at the short tubes 4 of the plate heat exchanger are opened, the short tubes 4 for cleaning the plate heat exchanger are connected according to the reverse direction of the flow direction of the cooling medium of the plate heat exchanger, the relatively large impurities in the plate sheets are cleaned out by the hairbrushes, then the short tubes 4 for cleaning the plate heat exchanger are connected according to the reverse direction of the flow direction of the cooling medium of the plate heat exchanger, water in the water tank 8 is pressurized into the plate heat exchanger by the water pump 9, and back flushing is carried out on the flow paths of the plate sheets to remove the impurities.

After back flushing, a certain proportion of citric acid is added into the water tank 8, the acid liquor is heated to the optimal descaling temperature by the water tank heater 11, and then is pumped into the plate heat exchanger for circular flushing by the water pump 9; after the pickling circulation flushing is finished, the water pump 9 can be used for filling the interior of the plate heat exchanger with acid liquor, and the water inlet valve 15 and the water outlet valve 14 on the short pipe 4 of the plate heat exchanger are closed, so that the plates are subjected to pickling treatment, and dirt in the plate flow channels fully reacts with the acid liquor to clean the dirt. Finally, clean water is added into the water tank 8, and the plate-type heat exchanger is circularly washed by the water pump 9, so that residual acid liquor and sundries are cleaned.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.

Claims (9)

1. The utility model provides a plate heat exchanger, its characterized in that, including front plate (1), back splint (2) and guide arm support (5), install slab group (3) between front plate (1) and back splint (2), it has a plurality of through-holes to open on back splint (2), and slab group (3) are through back splint (2) intercommunication has nozzle stub (4), and front plate (1), back splint (2) and slab group (3) are connected through the guide arm each other, the guide arm is fixed on guide arm support (5), and slab that slab group (3) and back splint (2) contacted is D type slab.

2. A plate heat exchanger according to claim 1, wherein the plates of the front plate (1), the rear plate (2) and the plate package (3) are provided with grooves, and the guide rods are clamped in the grooves of the plates of the front plate (1), the rear plate (2) and the plate package (3).

3. A plate heat exchanger according to claim 1, wherein the rear clamping plate (2) is clamped on a guide rod, the guide rod comprises an upper guide rod (61) and a lower guide rod (62), one end of the upper guide rod (61) and one end of the lower guide rod (62) are fixed on the front clamping plate (1), and the other end is fixed on the guide rod bracket (5).

4. A plate heat exchanger according to claim 1, wherein the front clamping plate (1) and the rear clamping plate (2) are provided with bolt holes, and the front clamping plate (1) and the rear clamping plate (2) are connected by a fastener (13).

5. A plate heat exchanger according to claim 1, wherein the short tubes (4) are provided with valves.

6. A washing system, characterized by comprising a plate heat exchanger according to any one of claims 1-5 and a washing section.

7. A cleaning system according to claim 6, characterized in that the cleaning section comprises a corrugated hose (7) in communication with the short tube (4) of the plate heat exchanger, the corrugated hose (7) being in communication with a water tank (8), the water tank (8) being connected with a water pump (9).

8. A cleaning system according to claim 7, characterized in that the corrugated hose (7) is provided with a screen (10) in communication with the tank (8).

9. A cleaning system according to claim 7, characterized in that the water tank (8) is provided with a heater (11), and that the bottom of the water tank (8) is provided with a tank drain valve (12).

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