CN104764360A - Pulsation device of heat exchanger for strengthened descaling - Google Patents

Abstract

The invention specifically discloses a pulsation device for strengthening descaling of a heat exchanger, which belongs to the technical field of energy. It can solve the problem of tube wall fouling and low heat exchange efficiency in the process of heat exchange between unclean water and clean water. The invention is provided with two water inlets and two water outlets, and the two water inlets flow in tangentially to realize the rotation of the moving plate; when the water outlet of the turntable turns to the water storage space on one side of the static plate, the other water storage space does not pass through Water flow; the two water storage spaces of the static plate are connected by a hard seal, and the continuous rotation of the moving plate realizes the diversion of water, and then realizes the pulsation of water flow; the two water outlets are respectively connected with the water inlet of the heat exchanger to make the heat exchange The device works smoothly and efficiently. The invention is used for the prevention and descaling of heat exchanger pipelines.

Description

A pulsation device for strengthening descaling of heat exchanger

technical field

The invention relates to a pulsation device for strengthening descaling of heat exchangers, belonging to the technical field of energy.

Background technique

Sewage source or surface water source is a kind of water source. Compared with groundwater, its main feature is that it has a large content of impurities, which is easy to form dirt on the heat exchange wall and pipes, which not only accelerates the corrosion of pipe walls, but also greatly reduces the service life of heat exchange equipment. It will affect the heat transfer efficiency and increase the flow resistance of the fluid. Therefore, anti-scaling and descaling are important technologies for using non-clean water for heat exchange.

Unclean water such as sewage and surface water is rich in low-grade heat energy, which can be extracted by using heat exchangers to provide heating and air conditioning for buildings. According to the calculation of my country's existing sewage discharge, the development and utilization of low-level thermal energy of sewage can provide heating and air conditioning for many urban buildings. Its development and application prospects are very broad, and it is one of the effective ways to save energy and reduce emissions in buildings.

The current anti-scaling technology mainly has the following two forms, and there are certain deficiencies in both:

One is the on-line cleaning technology of rubber balls, such as the patent No. 201320209861.1, the announcement number CN203240955U, and the invention patent named "rubber ball cleaning device for heat pump". It can achieve the purpose of cleaning the inner wall of the heat exchange tube with rubber balls, but its use effect is not ideal in the case of poor water quality, not only the ball collection rate is low, but also the secondary filter and the ball collection net also have scaling and corrosion problem.

The other is the on-line cleaning technology of inserts in the pipe (such as rotating ties, etc.), such as the invention patent technology of patent number 200720154258.2, announcement number CN201034457Y, and "helical coil automatic descaling and enhanced heat exchange device", which relies on the action of fluid Rotation or vibration can achieve the purpose of anti-scaling, but for the non-clean water heat exchanger with large heat transfer area, large number and long heat transfer tubes, the mechanical process is too complicated, the initial investment is large, and the non-clean water with a lot of impurities is very difficult. It is easy to cause blockage and corrosion damage of the insert.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems existing in the existing devices, and provide an enhanced descaling type heat exchange device, which can realize the pulsation of water flow, and effectively solve the scaling on the pipe wall during the heat exchange process between unclean water and clean water The problem.

To achieve the above object, the present invention adopts the following technical solutions:

The present invention mainly consists of the first water inlet pipeline, the first water inlet, the second water inlet pipeline, the second water inlet, bolts, nuts, bolt sleeves, bolt washers, valve cover, valve cover sealing ring, moving plate, Dynamic disk sealing ring, dynamic disk water outlet, static disk, static disk sealing ring, static disk first water storage room, static disk second water storage room, centripetal thrust bearing, first water outlet pipeline, first water outlet, The second water outlet pipeline and the second water outlet are composed; the valve cover is provided with two water inlets communicating with the inner cavity of the valve cover, the first water inlet and the second water inlet, and the first water inlet The second water inlet is arranged symmetrically with respect to the central axis of the bonnet. The line formed by the centers of the first water inlet and the second water inlet on the bonnet intersects the central axis of the bonnet. The first water inlet and the second water inlet The central axis intersects the tangent line of the inner wall of the valve cover; one end of the first water inlet communicates with the valve cover, and the other end communicates with the first water inlet pipeline; one end of the second water inlet communicates with the valve cover, The other end communicates with the second water inlet pipeline; one end of the first water outlet communicates with the first water storage room of the static plate, and the other end communicates with the first water outlet pipeline; one end of the second water outlet It communicates with the second water storage room of the static plate, and the other end communicates with the second water outlet pipeline; when the moving plate rotates, the water outlet of the moving plate communicates with the first water storage room of the static plate, the dynamic The water outlet of the disc does not communicate with the second water storage room; when the moving disc rotates, the water outlet of the moving disc communicates with the second water storage room of the static disc, and the water outlet of the moving disc does not communicate with the first water storage room.

The valve cover has a cavity, and there are two water inlets symmetrical to the center axis of the valve cover on the side wall of the valve cover, which are respectively connected with the first water inlet and the second water inlet, and there are evenly distributed Bolt holes are equipped with bolts and bolt sleeves to connect with the static disk; bolt sleeves and valve cover sealing rings are installed between the valve cover and the static disk; the top of the moving disk is equipped with a moving disk sealing ring, and the surface There are two moving disk blades, the moving disk blades are symmetrical about the central axis of the moving disk, and the bottom is sleeved on the inner ring of the centripetal thrust bearing; the inner ring of the radial thrust bearing is sleeved on the moving disk, and the outer ring is sleeved on the static on the disk; the static disk has a cavity, the middle cavity is divided into the first water storage room of the static disk and the second water storage room of the static disk, and the outer edge of the static disk is connected by the sealing ring of the static disk, bolts and nuts and the valve cover, The interior is equipped with a centripetal thrust bearing, the central axis of the bearing coincides with the central axis of the static plate, the first water storage room of the static plate is connected with the first water outlet, and the second water storage room of the static plate is connected with the second water outlet.

Features and beneficial effects of the present invention:

The water flows through the first and second water inlets to form an annular water flow, which drives the rotating disk to rotate, and distributes the water intermittently to two different water storage rooms in the static disk, so that the pulsating water flow can be realized in the water outlet pipe, and the pulsating water flow can effectively Prevent and remove the fouling of non-clean water in the heat exchanger, thereby maintaining the high-efficiency heat exchange of the heat exchanger, solving the problem of fouling in non-clean water, and increasing the heat exchange efficiency by 30%-50%. At the same time, the reversing device has the advantages of simple structure, strong working reliability and easy maintenance and operation.

Description of drawings:

Fig. 1 is the front view of the present invention

Figure 2 is a cross-sectional view of plane A-A of Figure 1

In the figure, the first water inlet pipeline 1, the first water inlet 2, the second water inlet pipeline 3, the second water inlet 4, the bolt 5, the nut 6, the bolt sleeve 7, the bolt washer 8, the static plate 9, the second water inlet A water outlet pipeline 10, first water outlet 11, valve cover 12, moving plate water outlet 13, valve cover sealing ring 14, static disc sealing ring 15, centripetal thrust bearing 16, moving disc blade 17, moving disc sealing ring 18 , the moving plate 19, the first water storage room 20 of the static plate, the second water storage room 21 of the static plate, the second water outlet 22, and the second water outlet pipeline 23.

Detailed ways:

The present invention will be further described below in conjunction with accompanying drawings and examples.

Embodiment 1: The present invention mainly consists of a first water inlet pipeline 1, a first water inlet 2, a second water inlet pipeline 3, a second water inlet 4, bolts 5, nuts 6, bolt sleeves 7, and bolt washers 8. Valve cover 12, valve cover sealing ring 14, moving disc 19, moving disc sealing ring 18, moving disc water outlet 13, static disc 9, static disc sealing ring 15, static disc first water storage room 20, static disc No. Two water storage rooms 21, a centripetal thrust bearing 16, the first water outlet pipeline 10, the first water outlet 11, the second water outlet pipeline 23, and the second water outlet 22; the valve cover 12 is provided with the The first water inlet 2 and the second water inlet 4 are the two water inlets connected to the inner cavity of the valve cover 12 described above. The first water inlet 2 and the second water inlet 4 are symmetrically arranged relative to the central axis of the valve cover 12. The second water inlet The straight line formed by the center of the first water inlet 2 and the second water inlet 4 on the valve cover 12 intersects the central axis of the valve cover 12, and the central axis of the first water inlet 2 and the second water inlet 4 intersects with the tangent line of the inner wall of the valve cover 12; One end of the first water inlet 2 communicates with the valve cover 12, and the other end communicates with the first water inlet pipeline 1; one end of the second water inlet 4 communicates with the valve cover 12, and the other end communicates with the second water inlet 4. The water inlet pipeline 3 communicates; one end of the first water outlet 11 communicates with the first water storage room 20 of the static plate, and the other end communicates with the first water outlet pipeline 10; one end of the second water outlet 22 It communicates with the second water storage room 21 of the static disk, and the other end communicates with the second water outlet pipeline 23; when the moving disk 19 rotates, the water outlet 13 of the moving disk and the first water storage room of the static disk 20, the water outlet 13 of the moving disk is not connected to the second water storage room 21 of the static disk; The water outlet 13 does not communicate with the first water storage room 20 of the static plate.

The valve cover 12 has a cavity, and there are two water inlets symmetrical to the central axis of the valve cover 12 on the side wall of the valve cover 12, which are respectively connected to the first water inlet 2 and the second water inlet 4. The valve cover 12 There are evenly distributed bolt holes on the outer edge, and bolts 5 and bolt sleeves 7 are connected to the static disk 9; bolt sleeves 7 and valve cover sealing rings 14 are installed between the valve cover 12 and the static disk 9; The top of the disk 19 is equipped with a moving disk sealing ring 18, and there are two moving disk blades 17 on the surface. The moving disk blades 17 are symmetrical about the central axis of the moving disk 19, and the bottom is sleeved on the inner ring of the centripetal thrust bearing 16; The inner ring of the centripetal thrust bearing 16 is set on the moving plate 19, and the outer ring is set on the static plate 9; the static plate 9 has a cavity, and the middle cavity is divided into the first water storage room 20 of the static plate and the second water storage room of the static plate. In the water storage room 21, the outer edge of the static disk 9 is connected with the valve cover 12 through the static disk sealing ring 15, bolts 5, nuts 6, and a centripetal thrust bearing 16 is installed inside, and the central axis of the radial thrust bearing 16 is connected with the central axis of the static disk 9 Coincidentally, the first water storage room 20 of the static plate is connected to the first water outlet 11 , and the second water storage room 21 of the static plate is connected to the second water outlet 22 .

The water flow in the first water inlet pipeline 1 and the second water inlet pipeline 3 passes through the first water inlet 2 and the second water inlet 4 respectively, and flows into the valve cover from the opposite direction along the inner wall of the valve cover 12 12, push the blades 17 of the moving disk to impel the rotation of the moving disk 19. At the same time as the rotating disk 19 rotates, when the water outlet 13 of the moving disk communicates with the first water storage room 20 of the static disk, it does not communicate with the second water storage room 21 of the static disk. , the water flows to the first water storage room 20 of the static plate, and does not flow to the second water storage room, so that it flows out through the first water outlet 11 . When the water outlet 13 of the movable disc communicates with the second water storage room 21 of the static disc, it does not communicate with the first water storage room 20 of the static disc, and the water flow flows to the second water storage room 21 of the static disc instead of the first water storage room. Thus, it flows out through the second water outlet 22 . The water flow is fast and uniform, the moving plate 19 continues to rotate, and the water flow continuously and intermittently flows into the first water outlet pipeline 10 and the second water outlet pipeline 23, realizing the pulsation of the water flow.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. On the basis of the technical solution of the present invention, those skilled in the art can make various Modifications or variations are still within the protection scope of the present invention.

Claims (2)

1. the palsating equipment of a heat exchanger reinforced scavenging, it is characterized in that it is by the first water inlet branch pipeline (1), first water inlet (2), second water inlet branch pipeline (3), second water inlet (4), bolt (5), nut (6), bolt collar (7), bolt washer (8), valve gap (12), valve bonnet seal circle (14), Moving plate (19), Moving plate sealing ring (18), Moving plate delivery port (13), quiet dish (9), quiet dish sealing ring (15), between quiet dish first water storage (20), between quiet dish second water storage (21), radial thrust bearing (16), first water outlet branch pipeline (10), first delivery port (11), second water outlet branch pipeline (23), second delivery port (22) forms, described valve gap (12) is provided with two water inlets communicated with described valve gap (12) inner chamber, first water inlet (2) and the second water inlet (4), first water inlet (2) and the second water inlet (4) are relative to the setting in a center of symmetry of valve gap (12) central shaft, first water inlet (2) and the second water inlet (4) center are crossing with valve gap (12) central shaft at the upper formed straight line of valve gap (12), the first water inlet (2) and the second water inlet (4) central axis crossing with valve gap (12) inwall tangent line, described the first water inlet (2) one end communicates with described valve gap (12), and the other end and first branch pipeline (1) of intaking communicates, described the second water inlet (4) one end communicates with described valve gap (12), and the other end and second branch pipeline (3) of intaking communicates, between described the first delivery port (11) one end with quiet dish first water storage, (20) communicate, and the other end communicates with the first described water outlet branch pipeline (10), between described the second delivery port (22) one end with quiet dish second water storage, (21) communicate, and the other end communicates with the second water outlet branch pipeline (23), when described Moving plate (19) rotates, when between Moving plate delivery port (13) with quiet dish first water storage, (20) communicate, Moving plate delivery port (13) does not communicate with (21) between the second water storage, when described Moving plate (19) rotates, when between Moving plate delivery port (13) with quiet dish second water storage, (21) communicate, between Moving plate dish delivery port (13) with quiet dish first water storage, (20) do not communicate.

2. valve gap (12) as claimed in claim 1 has cavity, valve gap (12) sidewall there are two relative to the centrosymmetric water inlet of valve gap (12) central shaft, be connected with the second water inlet (4) with the first water inlet (2) respectively, there is equally distributed bolt hole valve gap (12) outer, bolt (5) is housed and is connected with quiet dish (9) with bolt collar (7); Bolt collar (7) and valve bonnet seal circle (14) are housed between described valve gap (12) and quiet dish (9); Moving plate sealing ring (18) is equipped with at described Moving plate (19) top, there are two Moving plate blades (17) on the surface, described Moving plate blade (17) is symmetrical about Moving plate (19) central shaft, and bottom is enclosed within radial thrust bearing (16) inner ring; Described radial thrust bearing (16) inner ring is enclosed within Moving plate (19), and outer ring sleeve is on quiet dish (9); Described quiet dish (9) has cavity, middle cavity to be divided between quiet dish first water storage between (20) and quiet dish second water storage (21), quiet dish (9) outer is connected with valve gap (12) by quiet dish sealing ring (15), bolt (5), nut (6), radial thrust bearing (16) is equipped with in inside, bearing centre axle overlaps with quiet dish (9) central shaft, between quiet dish first water storage, (20) are connected with the first delivery port (11), and between quiet dish second water storage, (21) are connected with the second delivery port (22).