CN212747411U - Spiral wound heat exchanger free of disassembly and washing - Google Patents

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a spiral winding type heat exchanger free of unpicking and washing, which comprises a shell pass cylinder, wherein an upper tube plate is welded at the upper end of the shell pass cylinder, a lower tube plate is welded at the lower end of the shell pass cylinder, and tube holes are formed in the upper tube plate and the lower tube plate; an upper seal head is fixed above the upper tube plate, the upper end of the upper seal head is connected with a hot coal inlet, a lower seal head is fixed below the lower tube plate, and the lower end of the lower seal head is connected with a hot coal outlet; the shell core is arranged in the shell pass cylinder and consists of an upper tube plate and a lower tube plate which are connected with a spiral wound heat exchange tube bundle, and the winding directions of two adjacent layers of heat exchange tube bundles are opposite and a designed interlayer distance is kept between the two adjacent layers of heat exchange tube bundles. The utility model discloses when wasing the heat exchanger, connect washing liquid import and export respectively through row's mouth and manometer interface, clear up the operation of dirt to spiral wound form heat exchanger tube bank, reach the purpose of exempting from to unpick and wash, have the advantage that reduces the cleaning cycle, save the cleaning recruitment and save the cleaning cost.

Description

Spiral wound heat exchanger free of disassembly and washing

Technical Field

The utility model relates to a heat exchanger technical field specifically is a exempt from to tear spiral winding formula heat exchanger who washes open.

Background

Compared with the common tube type heat exchanger, the winding tube type heat exchanger has incomparable advantages, wide applicable temperature range, thermal shock adaptation, heat stress elimination, high compactness, full development of a flow field and no flowing dead zone due to the special structure. However, after the threaded pipe wound heat exchanger works for a long time, dirt is easily generated on the surface of the heat exchange pipe wound on the inner wall, and the heat exchange efficiency of the heat exchanger is affected if the heat exchange pipe is not cleaned in time.

When an existing spiral winding type heat exchanger is cleaned, a shell pass cylinder body is usually required to be dismantled, a shell core is taken out and cleaned, and recovery work after cleaning is very tedious and time-consuming. And the normal use of the heat exchanger is influenced when the cleaning is dismantled.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art's is not enough, provides a exempt from to tear spiral wound heat exchanger open and wash to solve current heat exchanger and easily scale deposit, dismantle and wash loaded down with trivial details, wash long problem when using.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a spiral wound heat exchanger free of unpicking and washing comprises a shell pass cylinder, wherein an upper tube plate is welded at the upper end of the shell pass cylinder, a lower tube plate is welded at the lower end of the shell pass cylinder, and a plurality of tube holes are uniformly formed in the upper tube plate and the lower tube plate respectively;

an upper end enclosure is fixed above the upper tube plate, the upper end of the upper end enclosure is connected with a hot coal inlet, a lower end enclosure is fixed below the lower tube plate, and the lower end of the lower end enclosure is connected with a hot coal outlet; a shell core is arranged in the shell pass cylinder and consists of an upper tube plate and a lower tube plate which are connected with a spirally wound heat exchange tube bundle, the winding directions of two adjacent layers of heat exchange tube bundles are opposite, and a designed interlayer spacing is kept between the two adjacent layers of heat exchange tube bundles;

the hot coal inlet and the hot coal outlet are used for the inlet and the outlet of a heating medium, so that the aim of 'reverse convection' is fulfilled, and the heat exchange efficiency is improved; the shell core is formed by alternately winding a plurality of groups of heat exchange tube bundles according to a spiral line shape, and each heat exchange tube bundle is longer than the shell of the heat exchanger due to the reverse tube structure of the heat exchange tube bundles, so that a medium can stay in the tube bundle for a long time;

furthermore, a coolant outlet short pipe and a coolant inlet short pipe are respectively welded on the peripheral side surface of the shell pass cylinder and used for enabling the coolant to enter from bottom to top, the coolant outlet short pipe and the coolant inlet short pipe are located on the same side of the shell pass cylinder, and fixed distances are reserved between the coolant outlet short pipe and the upper tube plate and between the coolant inlet short pipe and the lower tube plate.

Further, all round side welding of shell side barrel has the mouth of arranging completely, arrange completely the mouth with the length direction of shell side barrel is 25 ~ 45 contained angles to regularly clear up the dirt that drops in the shell side barrel when the routine maintenance.

Furthermore, a pressure gauge interface is welded on the peripheral side surface of the shell pass cylinder body, and a pressure gauge is connected onto the pressure gauge interface, so that the pressure of a refrigerant in the shell pass cylinder body is monitored in real time, and the safe use of the heat exchanger is ensured.

And furthermore, a layer of filler strip with the thickness same as the designed interlayer distance is arranged between every two adjacent layers of heat exchange tube bundles.

Furthermore, the exhaust port and the pressure gauge interface are positioned on the same side of the shell-side cylinder.

Furthermore, the exhaust port welding port is arranged on a horizontal plane close to the lower tube plate, so that all refrigerants can be exhausted at the exhaust port.

Furthermore, the welding port of the exhaust port and the lower tube plate is in a smooth arc shape.

The utility model discloses an advantage and positive effect:

(1) through the arranged drain port, dirt falling off from the shell pass cylinder is cleaned regularly during daily maintenance, and the device has the advantages of reducing cleaning frequency and prolonging service life;

(2) after the pressure gauge is connected through the arranged pressure gauge short-circuit interface, the refrigerant pressure in the shell pass cylinder is monitored in real time during daily inspection, and the heat exchanger has the advantage of ensuring safe use of the heat exchanger;

(3) when the heat exchanger is cleaned, the cleaning liquid inlet and the cleaning liquid outlet are respectively connected through the exhaust port and the pressure gauge interface, the operation of cleaning dirt on the spiral wound heat exchange tube bundle is performed, the purpose of cleaning without disassembly is achieved, and the heat exchanger cleaning device has the advantages of reducing the cleaning period, saving cleaning labor and saving cleaning cost.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

the notations in FIG. 1 have the following meanings: 1-shell pass cylinder, 2-shell core, 3-upper tube plate, 4-lower tube plate, 5-coolant outlet short tube, 6-coolant inlet short tube, 7-upper end socket, 8-lower end socket, 9-pressure gauge interface, 10-exhaustion port, 11-hot coal inlet, 12-hot coal outlet and 13-heat exchange tube bundle.

Detailed Description

In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are all the directions or positional relationships shown on the drawings, and the objects are only for convenience of description of the present invention and simplification of description, and do not indicate or imply that the parts indicated must have a specific direction, be constructed and operated in a specific direction, and thus, are not to be construed as limiting the present invention.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

A spiral wound heat exchanger free of unpicking and washing is shown in figure 1 and comprises a shell side cylinder 1, wherein an upper tube plate 3 is welded at the upper end of the shell side cylinder 1, a lower tube plate 4 is welded at the lower end of the shell side cylinder 1, and a plurality of tube holes are uniformly formed in the upper tube plate 3 and the lower tube plate 4 respectively;

an upper end enclosure 7 is fixed above the upper tube plate 3, the upper end of the upper end enclosure 7 is connected with a hot coal inlet 11, a lower end enclosure 8 is fixed below the lower tube plate 4, and the lower end of the lower end enclosure 8 is connected with a hot coal outlet 12; the shell side cylinder body 1 is internally provided with a shell core 2, the shell core 2 is formed by connecting an upper tube plate 3 and a lower tube plate 4 with a spiral wound heat exchange tube bundle 13, the winding directions of two adjacent layers of heat exchange tube bundles 13 are opposite, and a designed interlayer distance is kept between the two adjacent layers of heat exchange tube bundles 13.

The shell pass tube comprises a shell pass tube body 1 and is characterized in that a coolant outlet short tube 5 and a coolant inlet short tube 6 are welded on the circumferential side face of the shell pass tube body 1 respectively, the coolant outlet short tube 5 and the coolant inlet short tube 6 are located on the same side of the shell pass tube body 1, and fixed distances are reserved between the coolant outlet short tube 5 and the upper tube plate 3 and between the coolant inlet short tube 6 and the lower tube plate 4.

The welding of the week side of shell side barrel 1 has row's mouth 10, arrange mouth 10 with the length direction of shell side barrel 1 is 35 contained angles.

The shell side barrel is characterized in that a pressure gauge interface 9 is welded on the peripheral side surface of the shell side barrel 1, and a pressure gauge is connected to the pressure gauge interface 9.

A layer of filler strip with the same thickness as the designed layer interval is arranged between every two adjacent layers of heat exchange tube bundles 13.

The exhaust port 10 and the pressure gauge interface 9 are positioned on the same side of the shell-side cylinder 1.

The exhaust port 10 is welded at a level close to the lower tube sheet 4.

The welding opening of the exhaust opening 10 and the lower tube plate 4 is in a smooth arc shape.

When the utility model is used, firstly, the circulation of the refrigerant inlet and outlet is stopped, the refrigerant inlet and outlet are closed, and the refrigerant in the shell pass cylinder is exhausted through the exhaust port; and then the exhaust port and the pressure gauge interface are detached and connected with cleaning liquid, the cleaning liquid is filled into the shell pass cylinder from the exhaust port, the cleaning liquid flows out from the pressure gauge interface, the cleaning effect of the shell pass cylinder is judged by observing the cleanness degree of the effluent liquid at the pressure gauge interface until the cleaning liquid is clean and clear, nitrogen is filled into the shell pass cylinder from the pressure gauge interface in the reverse direction, the exhaust port is exhausted, the nitrogen is further blown until the blown nitrogen is clean and has no cleaning liquid, and finally the exhaust port and the pressure gauge interface are recovered, so that the cleaning is finished.

The details of the present invention not described in detail in the specification are well known to those skilled in the art. The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the record of description and attached drawing, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model is including the conventional connected mode of circuit connection adoption conventional among the prior art, and here detailed description is not again.

The above-mentioned embodiment is only the preferred embodiment of the present invention, all the basis the utility model discloses a technical entity all belongs to the utility model discloses any simple modification, modification and substitution change to what the above embodiment was done the within range of technical scheme.

Claims (8)

1. The spiral wound heat exchanger free of disassembly and cleaning is characterized by comprising a shell pass cylinder (1), wherein an upper tube plate (3) is welded at the upper end of the shell pass cylinder (1), a lower tube plate (4) is welded at the lower end of the shell pass cylinder (1), and a plurality of tube holes are uniformly formed in the upper tube plate (3) and the lower tube plate (4) respectively;

an upper end enclosure (7) is fixed above the upper tube plate (3), the upper end of the upper end enclosure (7) is connected with a hot coal inlet (11), a lower end enclosure (8) is fixed below the lower tube plate (4), and the lower end of the lower end enclosure (8) is connected with a hot coal outlet (12); the shell core (2) is arranged in the shell pass cylinder body (1), the shell core (2) is formed by connecting the upper tube plate (3) and the lower tube plate (4) with the spiral wound heat exchange tube bundle (13), the winding directions of the two adjacent layers of heat exchange tube bundles (13) are opposite, and the designed interlayer spacing is kept between the two adjacent layers of heat exchange tube bundles (13).

2. The spiral wound heat exchanger of claim 1, wherein a coolant outlet short tube (5) and a coolant inlet short tube (6) are welded to the circumferential side of the shell-side cylinder (1), the coolant outlet short tube (5) and the coolant inlet short tube (6) are located on the same side of the shell-side cylinder (1), and a fixed distance is provided between the coolant outlet short tube (5) and the upper tube plate (3) and between the coolant inlet short tube (6) and the lower tube plate (4).

3. The unpicking and washing-free spiral wound heat exchanger according to claim 1, characterized in that a drain opening (10) is welded to the circumferential side of the shell-side cylinder (1), and the drain opening (10) forms an included angle of 25-45 degrees with the length direction of the shell-side cylinder (1).

4. The unpicking and washing-free spiral wound heat exchanger according to claim 3, characterized in that a pressure gauge port (9) is welded on the circumferential side of the shell-side cylinder (1), and a pressure gauge is connected to the pressure gauge port (9).

5. The unpicking and washing-free spiral wound heat exchanger as claimed in claim 1, wherein a layer of packing strip having the same thickness as the designed layer interval is provided between each two adjacent layers of the heat exchange tube bundle (13).

6. The unpicking and washing-free spiral wound heat exchanger according to claim 4, characterized in that the drain port (10) and the pressure tap (9) are located on the same side of the shell-side cylinder (1).

7. A non-dismantling and cleaning spiral wound heat exchanger as claimed in claim 3, wherein said drain (10) weld is at a level close to said lower tube sheet (4).

8. The unpicking and washing-free spiral wound heat exchanger as claimed in claim 7, characterized in that the welding opening of the drain opening (10) and the lower tube plate (4) is in the shape of a smooth circular arc.

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