Regular automatic blowdown device for boiler

Abstract

The utility model discloses a regular automatic blowdown device for a boiler, and particularly relates to the technical field of boiler blowdown devices, the regular automatic blowdown device comprises a regular blowdown flash tank, the regular blowdown flash tank is communicated with a liquid inlet pipe, the liquid inlet pipe is communicated with a lower header at the bottom of the boiler through a plurality of regular blowdown pipes, and each regular blowdown pipe is fixedly provided with a three-way valve; one side of each three-way valve communicates with a water injection pipe, the multiple water injection pipes communicate with the same water conveying pipe, and one end of the water conveying pipe communicates with a liquid conveying assembly. The sewage discharge state of sewage in the fixed discharge pipe is monitored in real time through the chemical analyzer and the first flow meter on the fixed discharge pipe, the control assembly is used for controlling the electric valve to be automatically opened and closed, so that regular automatic sewage discharge of the boiler can be achieved, water can be conveyed into the fixed discharge pipe and the liquid inlet pipe through the high-pressure water pump, and the automatic sewage discharge of the boiler is achieved. Therefore, the service lives of the fixed discharge pipe and the liquid inlet pipe are prevented from being influenced by corrosion caused by residual sewage and impurities.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler blowdown device technical field more specifically, it is a kind of boiler regular automatic blowdown device. BACKGROUND

[0002] Impurities in water can gradually deposit in the process of boiler operation.For example, calcium, magnesium and other ions in feedwater can form scale in the heating process.If the scale is not discharged in time, it will adhere to the heating surface of the boiler.The scale has poor heat conduction performance, which can reduce the heat transfer efficiency of the heating surface of the boiler.Regular blowdown can discharge the impurities deposited at the bottom of the boiler outside the furnace, thereby ensuring the good heat transfer performance of the heating surface.

[0003] In the past, the boiler needs to be manually operated during regular blowdown. With the continuous development of science and technology, currently, the boiler can automatically blow down through an intelligent blowdown system, such as the self-control device for regular blowdown of a boiler disclosed in the prior art with publication number CN219624010U. However, similar prior art still has the following problems when in use: when the regular blowdown pipe and the regular blowdown expansion vessel are used for automatic blowdown, some scale and other impurities in the sewage can still remain in the regular blowdown pipe and the regular blowdown expansion vessel, which can easily cause the regular blowdown pipe to be blocked, not only affecting the normal operation of the blowdown work, but also affecting the use of the boiler and increasing the use cost when the regular blowdown pipe is replaced. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a boiler regular automatic blowdown device to solve the problem of scale remaining in the regular blowdown pipe and reducing the blowdown capacity of the regular blowdown pipe.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a boiler regular automatic blowdown device, comprising a regular blowdown expansion vessel, a liquid inlet pipe is communicated with the regular blowdown expansion vessel, the liquid inlet pipe is communicated with the lower header at the bottom of the boiler through a plurality of regular blowdown pipes, a three-way valve is fixedly arranged on each regular blowdown pipe, a water injection pipe is communicated with one side of the three-way valve, the same water delivery pipe is communicated between a plurality of water injection pipes, a liquid delivery assembly is communicated with one end of the water delivery pipe, a monitoring assembly one is fixedly arranged on each regular blowdown pipe, a monitoring assembly two is fixedly arranged on the liquid inlet pipe, and a control assembly is installed on the regular blowdown expansion vessel.

[0006] In a preferred embodiment, the liquid delivery assembly comprises a base on one side of the boiler, a water storage tank is fixedly arranged at the top end of the base, a high-pressure water pump is communicated with the front end of the water storage tank, the water outlet of the high-pressure water pump is communicated with the water delivery pipe, and the high-pressure water pump is used to automatically deliver water, which can improve the flushing effect of the regular blowdown pipe and the liquid inlet pipe.

[0007] In a preferred embodiment, the water storage tank is communicated with a water filter at the rear end, the water filter is fixed at the top end of the base, and the water filter is connected with the constant discharge expansion vessel through a communication pipe, so as to recycle and reuse the sewage in the constant discharge expansion vessel, thereby reducing the consumption of water resources.

[0008] In a preferred embodiment, the monitoring assembly one comprises a chemical analyzer, a flowmeter one and a manual valve installed on the constant discharge pipe, and the chemical analyzer, the flowmeter one and the manual valve are located in front of the three-way valve, and the monitoring assembly two comprises an electric valve and a flowmeter two installed on the liquid inlet pipe, and the flowmeter two is used to monitor the amount of sewage in the liquid inlet pipe, thereby facilitating management and control.

[0009] In a preferred embodiment, the control assembly comprises a controller, the chemical analyzer, the flowmeter one and the flowmeter two are connected to the input end of the controller, so as to monitor the amount of sewage in the constant discharge pipe and the liquid inlet pipe and monitor the composition of the sewage in the constant discharge pipe, and the electric valve, the high-pressure water pump and the water filter are connected to the output end of the controller, so that the automatic control of the utility model can be realized by using the controller.

[0010] In a preferred embodiment, the constant discharge expansion vessel is communicated with a water outlet pipe away from the side of the liquid inlet pipe, one end of the water outlet pipe is communicated with the communication pipe, and an exhaust pipe is fixed and penetrates through the top end of the constant discharge expansion vessel, so as to exhaust the gas in the sewage, thereby maintaining the air pressure balance in the constant discharge expansion vessel.

[0011] In a preferred embodiment, electromagnetic valves connected with the controller are fixed on the water outlet pipe and the exhaust pipe, so as to control the opening and closing of the water outlet pipe and the exhaust pipe.

[0012] The utility model discloses a technical effect and advantage: the utility model discloses a chemical analyzer and flowmeter one on the constant discharge pipe real-time monitoring sewage discharge state in the constant discharge pipe, and the control assembly is used to control the electric valve automatic opening, closing, thereby can realize the periodic automatic sewage discharge of boiler, and using high-pressure water pump can be transported to the water in the constant discharge pipe and liquid inlet pipe, realizes the automatic flushing of two, so as to prevent sewage impurities remaining from causing corrosion, influence the life of constant discharge pipe and liquid inlet pipe, three-way valve is detachable, and it is convenient to clean and replace, need not replace the whole constant discharge pipe and liquid inlet pipe, greatly shorten the time required for construction and maintenance, and the filter is set up and can filter the sewage in the constant expansion vessel, and the filtered sewage returns to the water storage tank, thereby can reduce the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0014] Figure 1 It is a whole structure schematic view of the present application;

[0015] Figure 2 It is a whole structure top view of the present application;

[0016] Figure 3 It is a whole structure side view of the present application;

[0017] Figure 4 It is a structure view of the fixed row pipe and monitoring assembly one of the present application;

[0018] Figure 5 It is a whole structure side view of the present application.

[0019] Reference signs: 1, fixed row expansion vessel; 2, liquid inlet pipe; 3, fixed row pipe; 4, lower header; 5, three-way valve; 6, water injection pipe; 7, water delivery pipe; 8, liquid delivery assembly; 9, monitoring assembly one; 10, monitoring assembly two; 11, control assembly; 12, water outlet pipe; 13, exhaust pipe; 14, electromagnetic valve;

[0020] 801, base; 802, water storage tank; 803, high-pressure water pump; 804, water filter; 805, communication pipe;

[0021] 901, chemical analyzer; 902, flow meter one; 903, manual valve;

[0022] 902, 1001, electric valve; 1002, flow meter two. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0024] Refer to the drawings in the description Figures 1-5The utility model provides a kind of boiler regular automatic blowdown device, including fixed discharge vessel 1, the fixed discharge vessel 1 is connected with inlet pipe 2, the inlet pipe 2 is communicated with the lower header 4 of boiler bottom by multiple fixed discharge pipe 3, three-way valve 5 is fixedly arranged on each fixed discharge pipe 3, the three-way valve 5 side is communicated with water injection pipe 6, same water delivery pipe 7 is communicated between multiple water injection pipe 6, the water delivery pipe 7 one end is communicated with liquid delivery assembly 8.

[0025] Monitoring assembly one 9 is fixedly arranged on each fixed discharge pipe 3, monitoring assembly two 10 is fixedly arranged on the inlet pipe 2, control assembly 11 is installed on the fixed discharge vessel 1, specifically, the monitoring assembly one 9 includes chemical analyzer 901 installed on fixed discharge pipe 3, flowmeter one 902 and hand valve 903, and chemical analyzer 901, flowmeter one 902 and hand valve 903 are located in front of three-way valve 5, the monitoring assembly two 10 includes electric valve 1001 and flowmeter two 1002 installed on inlet pipe 2, chemical analyzer 901 selects ThermoScientificOrion8030cX, flowmeter one 902 and flowmeter two 1002 all select LLJ-120, and electric valve 1001 selects D971F46.

[0026] When sewage is converged into inlet pipe 2 through multiple fixed discharge pipe 3 when boiler is discharged, chemical analyzer 901 on fixed discharge pipe 3 monitors impurity such as silicon dioxide content in sewage in real time, and flowmeter one 902 monitors sewage flow in real time, and chemical analyzer 901 and flowmeter one 902 send signal data detected to control assembly 11, and system in control assembly 11 processes and analyzes signal data received, and feedback to electric valve 1001 to open and close automatically, to realize regular automatic blowdown of boiler.

[0027] In the embodiment, the control assembly 11 includes controller, the chemical analyzer 901, flowmeter one 902 and flowmeter two 1002 are all connected at controller input end, and electric valve 1001, high-pressure water pump 803 and water filter 804 are all connected at controller output end, and controller can select BC3250, and the controller of this model can control TDS value by controlling the switch of electric valve 1001, has timer control bottom blowdown valve, and can remove boiler bottom sediment solid.

[0028] In the embodiment, the fixed-discharge expansion vessel 1 is communicated with a water outlet pipe 12 on the side away from the liquid inlet pipe 2, one end of the water outlet pipe 12 is communicated with the communicating pipe 805, the top end of the fixed-discharge expansion vessel 1 is fixedly penetrated with an exhaust pipe 13 for discharging the gas in the sewage, so as to maintain the air pressure balance in the fixed-discharge expansion vessel 1. And the electromagnetic valve 14 connected with the controller is fixedly arranged on the water outlet pipe 12 and the exhaust pipe 13, preferably the electromagnetic valve 14 is selected from j29w-160p, and the opening and closing of the water outlet pipe 12 and the exhaust pipe 13 can be automatically controlled by the electromagnetic valve 14.

[0029] The infusion assembly 8 comprises a base 801 located on one side of the boiler, the top end of the base 801 is fixedly provided with a water storage tank 802, the front end of the water storage tank 802 is communicated with a high-pressure water pump 803, the high-pressure water pump 803 is selected from TH80GP type gasoline engine high-pressure water pump, which has good mobility and self-suction capacity, and thus is suitable for use in the utility model. The water outlet of the high-pressure water pump 803 is communicated with the water delivery pipe 7, the rear end of the water storage tank 802 is communicated with a water filter 804, the water filter 804 is selected from SHKJ-1T / H of Shihangkejing, the water filter 804 is fixed on the top end of the base 801, and the water filter 804 is connected with the fixed-discharge expansion vessel 1 through the communicating pipe 805.

[0030] In the embodiment, the water filter 804 is further communicated with the rear end of the water storage tank 802, the water filter 804 is fixed on the top end of the base 801, and the water filter 804 is connected with the fixed-discharge expansion vessel 1 through the communicating pipe 805.

[0031] When the boiler is finished with the blowdown, the water in the water storage tank 802 is pumped by the high-pressure water pump 803 under the control of the controller, and the water is delivered to the plurality of three-way valves 5 through the water delivery pipe 7, at this time, the end of the three-way valve 5 communicated with the lower header 4 of the boiler is closed, so that the water flows into the fixed-discharge expansion vessel 1 through the fixed-discharge pipe 3 and the liquid inlet pipe 2, so that the automatic cleaning of the fixed-discharge pipe 3 and the liquid inlet pipe 2 can be completed, so as to avoid the corrosion caused by the residual sewage impurities, and affect the service life of the fixed-discharge pipe 3 and the liquid inlet pipe 2, and the three-way valve 5 is detachable, which is convenient for cleaning and replacement, and the sewage in the fixed-discharge expansion vessel 1 is delivered to the filter through the communicating pipe 805, and the sewage is filtered by the filter and then delivered to the water storage tank 802, so as to reduce the waste of water resources.

[0032] Each embodiment in the specification is described in a related manner, and the same and similar parts between each embodiment can be referred to each other, and each embodiment mainly explains the difference from other embodiments.

[0033] The above only describes the preferred embodiments of the utility model, and is not used to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

Claims

1. A boiler regular automatic blowdown device comprising a blowdown flash tank (1), characterized in that: The fixed row expansion vessel (1) is communicated with a liquid inlet pipe (2), the liquid inlet pipe (2) is communicated with a lower header (4) at the bottom of the boiler through a plurality of fixed row pipes (3); A three-way valve (5) is fixedly arranged on each fixed row pipe (3), the three-way valve (5) is communicated with a water injection pipe (6) on one side, a plurality of water injection pipes (6) are communicated with a same water delivery pipe (7), and one end of the water delivery pipe (7) is communicated with a liquid delivery assembly (8); A monitoring assembly one (9) is fixedly arranged on each fixed row pipe (3), a monitoring assembly two (10) is fixedly arranged on the liquid inlet pipe (2), and a control assembly (11) is installed on the fixed row expansion vessel (1).

2. A boiler periodic automatic blowdown device according to claim 1, characterized in that: The liquid delivery assembly (8) comprises a base (801) located on one side of the boiler, a water storage tank (802) is fixedly arranged at the top end of the base (801), a high-pressure water pump (803) is communicated with the front end of the water storage tank (802), and the water outlet of the high-pressure water pump (803) is communicated with the water delivery pipe (7).

3. A periodic automatic blowdown device for a boiler according to claim 2, characterized in that: The rear end of the water storage tank (802) is communicated with a water filter (804), the water filter (804) is fixed at the top end of the base (801), and the water filter (804) is connected with the fixed row expansion vessel (1) through a communication pipe (805).

4. A periodic automatic blowdown device for a boiler according to claim 3, characterized in that: The monitoring assembly one (9) comprises a chemical analyzer (901), a flowmeter one (902) and a manual valve (903) installed on the fixed row pipe (3), and the chemical analyzer (901), the flowmeter one (902) and the manual valve (903) are located in front of the three-way valve (5), and the monitoring assembly two (10) comprises an electric valve (1001) and a flowmeter two (1002) installed on the liquid inlet pipe (2).

5. A periodic automatic blowdown device for a boiler according to claim 4, characterized in that: The control assembly (11) comprises a controller, the chemical analyzer (901), the flowmeter one (902) and the flowmeter two (1002) are connected to the input end of the controller, the amount of sewage in the fixed row pipe (3) and the liquid inlet pipe (2) and the sewage composition in the fixed row pipe (3) are monitored, and the electric valve (1001), the high-pressure water pump (803) and the water filter (804) are connected to the output end of the controller.

6. A periodic automatic blowdown device for a boiler according to claim 5, characterized in that: The fixed row expansion vessel (1) is communicated with a water outlet pipe (12) away from the liquid inlet pipe (2), one end of the water outlet pipe (12) is communicated with the communication pipe (805), and an exhaust pipe (13) penetrates through the top end of the fixed row expansion vessel (1).

7. A periodic automatic blowdown device for a boiler according to claim 6, characterized in that: The water outlet pipe (12) and the exhaust pipe (13) are both fixedly provided with electromagnetic valves (14) connected with the controller, so as to control the opening and closing of the water outlet pipe (12) and the exhaust pipe (13). The water outlet pipe (12) and the exhaust pipe (13) are both fixedly provided with electromagnetic valves (14) connected with the controller, so as to control the opening and closing of the water outlet pipe (12) and the exhaust pipe (13).

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