Water supply device for improving cooling effect of auxiliary equipment

Abstract

The utility model aims to provide a water supply device for improving the cooling effect of auxiliary equipment, which solves the problem of poor cooling effect of the auxiliary equipment and comprises an auxiliary circulating assembly and a water inlet mother pipe, the original circulating assembly comprises a first water inlet pipe and a first circulating pump, the first circulating pump is arranged on the first water inlet pipe, and the water inlet mother pipe is arranged on the auxiliary circulating assembly. Two ends of the first water inlet pipe are respectively communicated with the cooling water tank and the generator unit; the auxiliary circulating assembly comprises a second water inlet pipe and a second circulating pump, the liquid inlet end of the second water inlet pipe is communicated with the liquid inlet side of the first water inlet pipe, the second circulating pump is arranged on the second water inlet pipe, and the liquid outlet end of the second water inlet pipe is communicated with the water inlet main pipe; due to the fact that the second circulating pump is arranged in the first water inlet pipe, part of cooling liquid can be shunted out from the first water inlet pipe, the shunted cooling liquid is high in flow speed due to continuous pressure of the second circulating pump, the second water inlet pipe and the water inlet main pipe are free of scale deposition and blockage, and the problem of scale deposition and blockage in a pipeline is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to auxiliary machine equipment cooling field, in particular to a water supply device of promoting auxiliary machine equipment cooling effect. BACKGROUND

[0002] 12MW power generation original auxiliary machine equipment cooling water is from the cooling water pool big circulating pump export, because the circulating water volume used by the original condenser does not have the margin, and then from the circulating pump export branch auxiliary machine cooling water pipeline occupies the circulating water volume of the steam turbine condenser, influences the heat exchange effect of the condensation ware, vacuum degree and power generation efficiency.

[0003] The original big circulating water pressure is low (water pump export 1 kg or so) and the auxiliary machine equipment cooling water pipeline is relatively disorderly, and the pipeline along the way loss is big, after increasing the three period waste heat boiler, the first stage large flue boiler, the equipment cooling water volume is not enough, only about 60m3 / h, and the end pressure is only about 0.5 kg, and the low pressure, low flow rate working condition is easy to block the auxiliary machine equipment cooling water pipeline, and the equipment cooling effect is influenced. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a water supply device of promoting auxiliary machine equipment cooling effect, solves the problem of poor auxiliary machine equipment cooling effect.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] The utility model provides a water supply device of promoting auxiliary machine equipment cooling effect, including original circulating component, auxiliary circulating component and water inlet mother pipe,

[0007] The original circulating component includes first water inlet pipe and first circulating pump, the first circulating pump is arranged on the first water inlet pipe, and the both ends of the first water inlet pipe are used for connecting cooling water pool and generator unit respectively;

[0008] The auxiliary circulating component includes second water inlet pipe and second circulating pump, the liquid inlet end of the second water inlet pipe is communicated with the liquid inlet side of the first water inlet pipe, the second circulating pump is arranged on the second water inlet pipe, and the liquid outlet end of the second water inlet pipe is communicated with the water inlet mother pipe;

[0009] The inner diameter size of the first water inlet pipe is greater than the inner diameter size of the second water inlet pipe.

[0010] Optionally, the liquid outlet side of the first water inlet pipe is provided with an auxiliary pipe, and the liquid outlet end of the auxiliary pipe is communicated with the water inlet mother pipe.

[0011] Optionally, the auxiliary circulating component further includes a first valve and a filter, the first valve is arranged on the liquid inlet side of the second water inlet pipe, and the filter is arranged between the first valve and the second circulating pump.

[0012] Optionally, the auxiliary circulation assembly further comprises a first blowdown valve and a second blowdown valve, the first blowdown valve and the second blowdown valve are arranged on the second water inlet pipe, and the second circulation pump is located between the first blowdown valve and the second blowdown valve.

[0013] Optionally, the auxiliary circulation assembly further comprises a check valve, a first pressure gauge and an electric valve, the check valve, the first pressure gauge and the electric valve are arranged on the liquid outlet side of the second circulation pump in sequence, and the first pressure gauge is located between the check valve and the electric valve.

[0014] Optionally, the water inlet main pipe is provided with a flow meter and a second pressure gauge.

[0015] Optionally, the auxiliary circulation assembly is arranged in pairs, and the liquid outlet ends of the two second water inlet pipes are connected to the water inlet main pipe.

[0016] Thanks to the above technical scheme, the utility model has the following advantages compared with the prior art:

[0017] The water supply device for improving the cooling effect of auxiliary equipment of the utility model, because the first circulation pump and the second circulation pump jointly adsorb the cooling liquid, the cooling liquid enters into the first water inlet pipe, because the inner diameter size of the first water inlet pipe is greater than the inner diameter size of the second water inlet pipe, so part of the cooling liquid can be divided from the first water inlet pipe, the flow rate of the divided cooling liquid is fast due to the continuous pressure of the second circulation pump, and the second water inlet pipe and the water inlet main pipe will not be blocked by the accumulated dirt, the cooling liquid supply is sufficient, and the problem of poor cooling effect of auxiliary equipment is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Some specific embodiments of the utility model will be described in detail hereinafter with reference to the drawings in an exemplary but not restrictive manner. The same reference signs in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 is a connection view of the water supply device for improving the cooling effect of auxiliary equipment according to the preferred embodiment of the utility model;

[0020] Figure 2 is Figure 1 the enlarged view of the auxiliary circulation assembly.

[0021] In the drawings, the reference signs are explained as follows:

[0022] 1, the original circulating assembly; 2, auxiliary circulating assembly; 3, water inlet main pipe; 4, auxiliary pipe; 5, cooling water pool; 6, generator unit; 11, first water inlet pipe; 12, first circulating pump; 21, second water inlet pipe; 22, second circulating pump; 23, first valve; 24, filter; 25, first blowdown valve; 26, second blowdown valve; 27, check valve; 28, first pressure gauge; 29, electric valve; 31, flow meter; 32, second pressure gauge; 41, auxiliary valve. DETAILED DESCRIPTION

[0023] The technical solutions of the utility model will be described clearly and completely below in combination with the drawings, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0024] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.

[0026] As shown in Figure 1 and Figure 2 , a water supply device for improving the cooling effect of auxiliary equipment, comprising an original circulating assembly 1, an auxiliary circulating assembly 2 and a water inlet main pipe 3, the original circulating assembly 1 comprising a first water inlet pipe 11 and a first circulating pump 12, the first circulating pump 12 being arranged on the first water inlet pipe 11, the first water inlet pipe 11 having two ends for communicating with a cooling water pool 5 and a generator unit 6 respectively, the cooling water pool 5 being used for supplying cooling water, and the cooling water being used for cooling the generator unit 6 through the first water inlet pipe 11.

[0027] The auxiliary circulating assembly 2 comprises a second water inlet pipe 21 and a second circulating pump 22, the liquid inlet end of the second water inlet pipe 21 being communicated with the liquid inlet side of the first water inlet pipe 11, the second circulating pump 22 being arranged on the second water inlet pipe 21, and the liquid outlet end of the second water inlet pipe 21 being communicated with the water inlet main pipe 3.

[0028] At the same time, the first circulating pump 12 and the second circulating pump 22 are started, the first circulating pump 12 draws the cooling liquid through the first water inlet pipe 11, because the second water inlet pipe 21 is communicated with the liquid inlet side of the first water inlet pipe 11, the second circulating pump 22 draws the cooling liquid through the second water inlet pipe 21, in fact, part of the cooling liquid is branched from the first water inlet pipe 11 to the second water inlet pipe 21, the branched cooling liquid finally enters the water inlet main pipe 3, the cooling liquid from the water inlet main pipe 3 is used for cooling and temperature reduction of other equipments.

[0029] The inner diameter size of the first water inlet pipe 11 is larger than that of the second water inlet pipe 21, so that the first water inlet pipe 11 has residual cooling liquid, the residual cooling liquid is used for cooling and temperature reduction of the generator unit 6, because of the auxiliary action of the second circulating pump 22, the branched cooling liquid has high flow rate in the second water inlet pipe 21, the pressure in the second water inlet pipe 21 is high, so that most of the impurities in the cooling liquid flow away, and the second water inlet pipe 21 and the water inlet main pipe 3 do not appear to be blocked by the accumulated dirt.

[0030] The auxiliary pipe 4 is arranged on the liquid outlet side of the first water inlet pipe 11, the liquid outlet end of the auxiliary pipe 4 is communicated with the water inlet main pipe 3, the auxiliary valve 41 is arranged on the auxiliary pipe 4, the auxiliary valve 41 is a manual valve, when the auxiliary circulating assembly 2 fails and the cooling liquid cannot flow in the second water inlet pipe 21, the auxiliary valve 41 is opened, so that the auxiliary pipe 4 is communicated with the water inlet main pipe 3, the cooling liquid is branched from the liquid outlet side of the first water inlet pipe 11, the branched cooling liquid enters the water inlet main pipe 3 through the auxiliary pipe 4, and is also used for cooling and temperature reduction of other equipments, when the auxiliary circulating assembly 2 normally works, the auxiliary valve 41 is closed.

[0031] The auxiliary circulating assembly 2 further comprises the first valve 23 and the filter 24, the first valve 23 is arranged on the liquid inlet side of the second water inlet pipe 21, and the filter 24 is arranged between the first valve 23 and the second circulating pump 22, the first valve 23 is also a manual valve, when part of components of the auxiliary circulating assembly 2 needs to be maintained, the first valve 23 can be closed, the filter 24 filters the impurities in the cooling liquid, the filter 24 adopts a Y-type filter, the Y-type filter has the characteristics of small resistance and convenient pollution discharge, and the filter layer in the Y-type filter is regularly replaced.

[0032] The auxiliary circulating assembly 2 further comprises the check valve 27, the first pressure gauge 28 and the electric valve 29, the check valve 27, the first pressure gauge 28 and the electric valve 29 are sequentially arranged on the liquid outlet side of the second water inlet pipe 21, the cooling liquid passes through the check valve 27 after passing through the second circulating pump 22, so that the cooling liquid cannot flow back at this position, the first pressure gauge 28 is used for monitoring the pressure in the second water inlet pipe 21, in particular, the pressure in the liquid outlet side of the second water inlet pipe 21, the first pressure gauge 28 is located between the check valve 27 and the electric valve 29, and the electric valve 29 is normally opened.

[0033] The auxiliary circulation assembly 2 further comprises a first blowdown valve 25 and a second blowdown valve 26, which are arranged on the second water inlet pipe 21, and the second circulation pump 22 is located between the first blowdown valve 25 and the second blowdown valve 26. After a long time, there is still a small amount of scale in the second water inlet pipe 21. When the auxiliary circulation assembly 2 needs to be cleaned, the electric valve 29 is closed, and the second circulation pump 22 continues to extract the coolant. At this time, the coolant is discharged from the first blowdown valve 25 and the second blowdown valve 26.

[0034] The water inlet main pipe 3 is provided with a flow meter 31 and a second pressure gauge 32. The flow meter 31 is used to monitor the flow of the coolant in the water inlet main pipe 3, and the second pressure gauge 32 is used to monitor the pressure in the water inlet main pipe 3.

[0035] The auxiliary circulation assembly 2 is arranged in pairs, so the outlet ends of the two second water inlet pipes 21 are connected to the water inlet main pipe 3 in common, and one of the auxiliary circulation assemblies 2 is in standby.

[0036] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A water supply device for improving the cooling effect of auxiliary equipment, comprising a primary circulation component (1), an auxiliary circulation component (2), and an inlet header (3), characterized in that, The original circulation component (1) includes a first inlet pipe (11) and a first circulation pump (12). The first circulation pump (12) is installed on the first inlet pipe (11). The two ends of the first inlet pipe (11) are respectively used to connect the cooling water pool and the generator set. The auxiliary circulation component (2) includes a second water inlet pipe (21) and a second circulation pump (22). The liquid inlet end of the second water inlet pipe (21) is connected to the liquid inlet side of the first water inlet pipe (11). The second circulation pump (22) is installed on the second water inlet pipe (21). The liquid outlet end of the second water inlet pipe (21) is connected to the water inlet header pipe (3). The inner diameter of the first water inlet pipe (11) is larger than the inner diameter of the second water inlet pipe (21).

2. The water supply device for improving the cooling effect of auxiliary equipment according to claim 1, characterized in that, An auxiliary pipe (4) is provided on the liquid outlet side of the first water inlet pipe (11), and the liquid outlet end of the auxiliary pipe (4) is connected to the water inlet main pipe (3).

3. The water supply device for improving the cooling effect of auxiliary equipment according to claim 1, characterized in that, The auxiliary circulation assembly (2) further includes a first valve (23) and a filter (24). The first valve (23) is disposed on the liquid inlet side of the second water inlet pipe (21), and the filter (24) is disposed between the first valve (23) and the second circulation pump (22).

4. The water supply device for improving the cooling effect of auxiliary equipment according to claim 1, characterized in that, The auxiliary circulation assembly (2) further includes a first drain valve (25) and a second drain valve (26), the first drain valve (25) and the second drain valve (26) are disposed on the second inlet pipe (21), and the second circulation pump (22) is located between the first drain valve (25) and the second drain valve (26).

5. The water supply device for improving the cooling effect of auxiliary equipment according to claim 1, characterized in that, The auxiliary circulation assembly (2) also includes a check valve (27), a first pressure gauge (28) and an electric valve (29). The check valve (27), the first pressure gauge (28) and the electric valve (29) are sequentially arranged on the liquid outlet side of the second water inlet pipe (21). The first pressure gauge (28) is located between the check valve (27) and the electric valve (29).

6. The water supply device for improving the cooling effect of auxiliary equipment according to claim 1, characterized in that, A flow meter (31) and a second pressure gauge (32) are installed on the inlet header (3).

7. The water supply device for improving the cooling effect of auxiliary equipment according to claim 1, characterized in that, The auxiliary circulation component (2) is provided in pairs, and the liquid outlet ends of the two second water inlet pipes (21) are connected to the water inlet header pipe (3).

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