Water draining device for economizer of gas-fired hot water boiler

Abstract

The utility model discloses a drainage device for an economizer of a gas-fired hot water boiler, and relates to the technical field of thermal engineering. The device comprises a water collecting pipe (1), an outlet pipe (2) is arranged in the middle of the water collecting pipe (1) and is divided into two sections, the two sections are connected through a flange (3), an anti-blocking dredging device (7) is additionally arranged on the outlet pipe (2), the outlet pipe (2) is led into a water storage tank (4), the water storage tank (4) is arranged in a drainage ditch (5), and drained water directly overflows to the drainage ditch (5). By means of the flange connection mode, the connecting flange can be detached conveniently to clean the pipeline, the anti-blocking dredging device can be installed conveniently, and pipeline blocking objects can be dredged in time.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal engineering, in particular to the transformation of a drain tank of an economizer of a 2×29MW gas-fired hot water boiler. Background Art

[0002] A steam trap is a device used to separate liquids and gases, primarily through gravity and inertia, allowing the gases to escape freely and maintain proper system operation. In industrial production, steam traps are essential equipment. In boiler companies, steam traps are used to separate water from steam, preventing the two from mixing and affecting production efficiency. Water damage to turbines and heaters is also a concern.

[0003] The main technical solution currently on the market is to use a drain tank with a 29MW gas-fired hot water boiler economizer. This system uses a DN200 pipe as a water collection pipe, with a DN50 seamless pipe extending from the middle of the pipe to 10 cm below the bottom of the water storage tank. A DN50 pipe is then drawn from the upper level of the water storage tank to a drain ditch. However, boiler companies' drain systems are currently prone to clogging. The filter in front of the drain valve becomes clogged with dirt and impurities, preventing condensate from reaching the front end of the drain valve. This blockage prevents the condensate from draining properly from the economizer, causing it to accumulate inside the economizer, block the outlet pipe, and even flow into the tail flue. Alternatively, the drain valve's discharge capacity is less than the actual condensate produced, resulting in an inability to completely and timely remove the condensate. Utility Model Content

[0004] In view of the defects and shortcomings in the technology, the purpose of this utility model is to use flanges to connect pipelines and install anti-clogging dredging devices to clean the pipelines and prevent blockage.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A gas hot water boiler economizer drain device comprises a water collecting pipe (1), an outlet pipe (2) is arranged in the middle of the water collecting pipe (1) and is divided into two sections and connected by flanges (3), an anti-blocking dredging device (7) is installed on the outlet pipe (2), and the anti-blocking dredging device (7) comprises a driving motor (703), a winding column (701) is installed on the driving motor (703), a metal hose wire (702) is wound around the wire, passes through a guide pipe (704), and drives a dredging soft roller brush (708) to dredge the outlet pipe (2) through an anti-slip wheel (712), and the outlet pipe (2) is introduced into a water storage tank (4), and the water storage tank (4) is placed in a drainage ditch (5), and the drainage overflows directly into the drainage ditch (5).

[0007] The gas hot water boiler economizer drain device, the anti-blocking dredging device (7) includes a driving motor (703), the driving motor (703) is installed with a winding column (701) to wind a metal hose wire (702), the metal hose wire (702) is connected to a rotating motor (707) through a guide tube (704), the rotating motor (707) is connected to a dredging soft roller brush (708), the driving motor (703) is provided with a limiting traction plate (714) whose bottom is connected to a magnetic lock (706) through a spring (709), and the top of the limiting traction plate (714) is slidably connected to a sliding support rod (705).

[0008] The gas hot water boiler economizer drain device, the dredging soft roller brush (708) is equipped with two anti-skid wheels (712), the anti-skid wheels (712) are provided with anti-skid wheel brackets (711), the upper part of the anti-skid wheel bracket (711) is equipped with a driving motor (703), and the lower part of the anti-skid wheel bracket (711) is equipped with an anti-skid wheel bracket spring (718) as a support.

[0009] In the gas hot water boiler economizer drain device, the central axis of the dredging soft roller brush (708) is installed to coincide with the center of the outlet pipe (2).

[0010] In the gas hot water boiler economizer drain device, the flange (3) device body is provided with a fixing hole adapted to the flange gasket (301), and then two outlet pipes (2) are connected by bolts and nuts (302). Beneficial effects

[0011] 1. The utility model divides the outlet pipe in the middle of the water collecting pipe into two sections and adopts flange connection to facilitate disassembly, maintenance and cleaning of the pipeline.

[0012] 2. The utility model adds an anti-blocking dredging device to timely dredge pipe blockages, greatly reducing the chance of pipe blockage and improving boiler operation efficiency.

[0013] 3. The utility model increases the diameter of the outlet pipe in the middle of the water collecting pipe, thereby increasing the discharge volume of condensed water, making drainage smoother and reducing the occurrence of blockage in the outlet pipe.

[0014] 4. The utility model places the water tank in the drainage ditch, eliminating the overflow pipe of the water tank and facilitating construction and installation work.

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 ; Schematic diagram of the overall structure of the gas hot water boiler economizer drain tank before renovation;

[0017] Figure 2 ; Schematic diagram of the overall structure of the gas hot water boiler economizer drain tank after transformation;

[0018] Figure 3 ; Schematic diagram of the anti-clogging dredging device for the drain tank of a gas hot water boiler economizer;

[0019] Figure 4 ; Schematic diagram of the roller brush drive mechanism inside the drain tank of a gas hot water boiler economizer;

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. Water collecting pipe; 2. Outlet pipe; 3. Flange; 301. Bolts and nuts; 302. Flange gasket; 4. Water storage tank; 401. Overflow pipe; 5. Drainage ditch; 6. Energy saver; 7. Anti-clogging dredging device; 701. Winding column; 702. Metal hose and wire; 703. Drive motor; 704. Guide pipe; 705. Sliding support rod; 706. Magnetic lock; 707. Rotating motor; 708. Dredging roller brush; 709. Spring; 710. Telescopic rod; 711. Anti-skid wheel bracket; 712. Anti-skid wheel; 713. Isolation cover; 714. Limit traction plate; 715. Anti-skid wheel drive motor; 716. In-pipe roller brush drive mechanism; 717. Limit switch; 717. Anti-skid wheel bracket spring; 718. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] The drain device of the gas hot water boiler economizer comprises a water collecting pipe 1, two DN100 outlet pipes 2 are led out from the middle of the water collecting pipe 1, the outlet pipe 2 is divided into two sections and connected by a flange 3, the outlet pipe 2 is equipped with an anti-blocking dredging device 7, the anti-blocking dredging device 7 comprises a driving motor 703, the driving motor 703 is provided with a limit traction plate 714 and connected to a magnetic lock 706 by a spring 709, the limit traction plate 714 is slidably connected to a sliding support rod 705, the driving motor 703 is installed with a winding column 701 to wind a metal hose wire 702, the metal hose wire 702 passes through a guide tube 704 and a limit switch 717 is provided at the elbow at the bottom of the guide tube 704, the guide tube 704 is connected to an inner roller brush driving mechanism 716, and the inner roller brush driving mechanism 716 includes an anti-slip wheel 712, The anti-skid wheel 712 is fixed to the anti-skid wheel bracket 711 through a bearing, and an anti-skid wheel driving motor 715 is fixedly installed on the upper part of the anti-skid wheel bracket 711 to drive the two anti-skid wheels 712. The lower part of the anti-skid wheel bracket 711 is fixedly connected to the anti-skid wheel bracket spring 718 as a support for the anti-skid wheel 712 on the inner wall of the pipe and a pair of telescopic rods 710 are fixedly installed at the lower part of the anti-skid wheel bracket 711 to fix the anti-skid wheel 712 to rise and fall. The anti-skid wheel 712 drives the dredging soft roller brush 708 to move in the pipe. The dredging soft roller brush 708 is installed with a rotating motor 707 to drive the dredging soft roller brush 708 to rotate and clean the outlet pipe 2. The head of the dredging soft roller brush 708 adopts an arc design to facilitate cleaning the elbow part of the outlet pipe 2. The outlet pipe 2 is introduced into the water storage tank 4, and the water storage tank 4 is placed in the drain ditch 5, and the drainage overflows directly into the drain ditch 5.

[0024] The utility model is a gas hot water boiler energy saver drain device, including a water collecting pipe 1, the outlet pipe position on the water collecting pipe 1 is expanded and connected to a DN100 outlet pipe 2, the outlet pipe is divided into two parts and connected by a flange 3 to a water storage tank 4, a hole of suitable size is cut in the outlet pipe 2 for the anti-blocking dredging device 7 for installation, and an isolation cover 713 is installed on the cut part after the anti-blocking dredging device 7 is installed to prevent the moisture in the outlet pipe 2 from affecting the anti-blocking dredging device 7, and a driving electric The motor 703 is driven by a winding column 701 to wind the metal hose wire 702. The metal hose wire 702 is connected to the rotating motor 707 through the guide tube 704. The rotating motor 707 is connected to the dredging soft roller brush 708. A limit traction plate 714 is installed below the driving motor 703 and is connected to the magnetic lock 706 through a spring 709. The limit traction plate 714 is slidably connected to the sliding support rods 705 on both sides of the magnetic lock 706. When the device is regularly powered on, the magnetic lock 706 The limiting traction plate 714 is driven along the sliding support rod 705 to enter the middle of the outlet pipe 2, and the driving motor 703 drives the winding column 701 to connect the metal hose wire 702 to the anti-skid wheel driving motor 715 to control the anti-skid wheel 712 to drive the dredging soft roller brush 708 to move in the outlet pipe 2. The dredging soft roller brush 708 is installed with a rotating motor 707 to rotate and clean the inside of the outlet pipe 2. The metal hose wire 702 passes through the guide tube 703 and is electrically connected to the rotating motor 707. Then the soft roller brush 708 rotates forward to dredge the outlet pipe 2. When the outlet pipe 2 is dredged, the soft roller brush 708 contacts the limit switch 717 at the bottom of the guide pipe 704. The magnetic lock 706 is powered off to make the limit traction plate 714 return to the initial position. The anti-skid wheel drive motor 715 and the rotating motor 707 are powered off and stop working. The drive motor 703 is delayed to shut down and drive the winding column 701 to make the metal hose wire 702 wind up to the initial stroke to avoid affecting normal work such as drainage.

[0025] The overflow pipe 401 of the original water storage tank 4 is partially removed and a drainage ditch 5 is installed. When the drain tank of the 2×29MW gas-fired hot water boiler economizer is working, the water level in the water storage tank 4 can be used to prevent smoke leakage. The accumulated water in the economizer 6 flows to the water storage tank 4 through the pipeline under the action of its own weight. After the water in the water storage tank 4 exceeds the height of the water storage tank 4, it flows into the drainage ditch 5 through the outlet pipe 2, completing the discharge of the water in the economizer 6 and ensuring safe operation.

[0026] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments, any equivalent replacement of some of the technical features therein, and any modification, equivalent replacement, and improvement made are within the scope of protection of the present invention.

Claims

1. A gas hot water boiler economizer drain device, characterized in that: The invention comprises a water collecting pipe (1), an outlet pipe (2) is arranged in the middle of the water collecting pipe (1), the outlet pipe (2) is divided into two sections and connected by flanges (3), the outlet pipe (2) is equipped with an anti-blocking dredging device (7), the anti-blocking dredging device (7) comprises a driving motor (703), the driving motor (703) is installed with a winding column (701), a metal hose wire (702) is wound around the wire, the wire passes through a guide pipe (704), and a dredging soft roller brush (708) is driven to dredge the outlet pipe (2) via an anti-slip wheel (712), the outlet pipe (2) is introduced into a water storage tank (4), the water storage tank (4) is placed in a drainage ditch (5), and the drainage directly overflows into the drainage ditch (5).

2. The gas hot water boiler economizer drain device according to claim 1, characterized in that: The driving motor (703) is fixed on the limiting traction plate (714), the bottom of the limiting traction plate (714) is connected to the magnetic lock (706) via a spring (709), the top of the limiting traction plate (714) drives the driving motor (703) to be slidably connected to the sliding support rod (705), the driving motor (703) is installed with a winding column (701), a metal hose wire (702) is wound on the winding column (701), the metal hose wire (702) passes through the guide tube (704) and is connected to the tube roller brush driving mechanism (716), and the tube roller brush driving mechanism (716) is connected to the dredging soft roller brush (708).

3. The gas hot water boiler economizer drain device according to claim 2, characterized in that: The tube roller brush driving mechanism (716) comprises two anti-skid wheels (712) installed, the anti-skid wheel bracket (711) is installed on the anti-skid wheel bracket (711), the driving motor (703) is installed on the upper part of the anti-skid wheel bracket (711), the anti-skid wheel bracket spring (718) is installed on the lower part of the anti-skid wheel bracket (711), and telescopic rods are provided at both ends of the anti-skid wheel bracket (711).

4. The gas hot water boiler economizer drain device according to claim 1 or 2, characterized in that: The central axis of the dredging soft roller brush (708) is installed to coincide with the center of the outlet pipe (2).

5. The gas hot water boiler economizer drain device according to claim 1 or 2, characterized in that: The flange (3) is provided with a fixing hole adapted to the flange gasket (301), and the two outlet pipes (2) are connected by bolts and nuts (302).

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