Throttling device for high-pressure water feeding pump of boiler

Abstract

The utility model discloses a boiler high pressure feed pump throttling device which comprises a water inlet pipe, a water outlet pipe and a throttling assembly, the water inlet pipe is arranged at the right end of the throttling assembly, and the water outlet pipe is arranged at the left end of the throttling assembly. The throttling assembly comprises a butt joint pipe connected with the water inlet pipe and the water outlet pipe, a throttling orifice plate and a throttling nozzle, the throttling orifice plate and the throttling nozzle are arranged in the butt joint pipe, drainage holes are formed in the surface of the throttling orifice plate, and a gear ring is rotationally connected to the circumference of the throttling orifice plate. According to the throttling device of the boiler high-pressure water feeding pump, aiming at the problem that in the prior art, a drain hole of a throttling orifice plate is prone to being blocked, the gear ring connected in a rotating mode is arranged on the circumference of the throttling orifice plate, the cleaning plate is arranged on the portion, abutting against the drain hole, of the side face of the gear ring, and the driving piece in the butt joint pipe is matched, so that automatic cleaning of the drain hole is achieved; manual frequent disassembly and cleaning are not needed, the maintenance frequency and cost are effectively reduced, and long-term stable operation of the throttling device is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to throttling technical field, concretely is a kind of boiler high-pressure feed pump throttling device. BACKGROUND

[0002] In modern industrial production, boiler is very important equipment, is widely used in electric power, chemical industry, heating and many other fields, boiler high-pressure feed pump as the key component of boiler system, responsible for the delivery of high-pressure feed water for boiler, its stable operation is important for the safety and efficiency of entire boiler system.

[0003] In prior art, the publication number CN219413952U discloses a kind of boiler high-pressure feed pump throttling device, including throttling pipe and water pump outlet pipe, the inside of throttling pipe is close to the position of right side and is provided with throttling nozzle, the inside of throttling pipe is staggered and is provided with multiple throttling orifice plates, the left side end surface of throttling pipe is provided with sealing ring, the outer surface of throttling pipe is fixedly connected with limit post in symmetry, the outer surface of water pump outlet pipe is fixedly connected with limit ring, connecting assembly, the connecting assembly is arranged between throttling pipe and water pump outlet pipe.

[0004] By left tooth cover and right tooth cover connection, then tighten fixed bolt, it plays the role of fixed connection sleeve, the above structure can be quickly disassembled to connection sleeve, but when using different throttling orifice plates, since the surface drainage hole is easily blocked after long time use, it is inconvenient to use, therefore further optimization is carried out to the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a kind of boiler high-pressure feed pump throttling device, solve the problems raised in above background technology.

[0006] To achieve the above object, the utility model is realized by the following technical scheme: a kind of boiler high-pressure feed pump throttling device, including inlet pipe, outlet pipe and throttling assembly, the inlet pipe is located at the right end of throttling assembly, the outlet pipe is located at the left end of throttling assembly;

[0007] The throttling assembly includes butt joint pipe connected with inlet pipe and outlet pipe, throttling orifice plate and throttling nozzle arranged inside butt joint pipe, the surface of throttling orifice plate is provided with drainage hole, the circumferential rotation of throttling orifice plate is connected with gear ring, the side surface of gear ring, the part of abutment in drainage hole is provided with cleaning plate, the inside of butt joint pipe is provided with driving piece for driving gear ring rotation, the drainage hole is cleaned by the cleaning plate;

[0008] The two sides of the butt joint pipe are provided with butt joint groove, and one end of the inlet pipe and the outlet pipe is provided with a positioning assembly matched with the butt joint groove.

[0009] The utility model has the following beneficial effects:

[0010] The boiler high-pressure feed water pump throttling device, aiming at the problem that the drainage hole of the throttle orifice plate is easy to be blocked in the prior art, the device is provided with a gear ring rotatably connected on the circumference of the throttle orifice plate, and a cleaning plate is arranged at the abutting position of the side surface of the gear ring and the drainage hole, and the automatic cleaning of the drainage hole is realized by cooperating with the driving element in the butt joint pipe, so that the frequent disassembly and cleaning by manual work are not needed, the maintenance frequency and cost are effectively reduced, the long-term stable operation of the throttling device is ensured, and the stability and operation efficiency of the entire boiler system are improved.

[0011] The boiler high-pressure feed water pump throttling device, the driving rod is driven to rotate by the starting motor, the gear ring is rotated through the gear rod, and the cleaning plate sweeps the drainage hole, the opening and plugging of part of the drainage holes can be realized in the rotating process of the cleaning plate, the number of the drainage holes can be flexibly adjusted, the accurate control of the water flow is realized, the high-efficiency operation state of the boiler high-pressure feed water pump is ensured, and the stability and operation efficiency of the entire boiler system are improved.

[0012] The boiler high-pressure feed water pump throttling device is provided with the butt joint groove on the two sides of the butt joint pipe, the positioning assembly on the water inlet pipe and the water outlet pipe, and the connecting mode is matched, the positioning rod and the limiting ring are inserted into the butt joint groove and are preliminarily positioned after counterclockwise rotation, the auxiliary rod is inserted into the limiting hole under the action of the spring, the double positioning ensures the stable connection, the loosening and displacement between the water inlet pipe, the water outlet pipe and the butt joint pipe are prevented, the water flow fluctuation problem caused by unstable connection is effectively avoided, the stable water flow conveying is ensured, and the safety operation of the boiler is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0014] Figure 2 It is a water inlet pipe, a water outlet pipe and a throttling assembly disassembly structure schematic diagram of the utility model;

[0015] Figure 3 It is a butt joint pipe internal structure schematic diagram of the utility model;

[0016] Figure 4 It is a butt joint pipe cross section structure schematic diagram of the utility model;

[0017] Figure 5 It is a butt joint pipe side view structure schematic diagram of the utility model.

[0018] Among them, 1, water inlet pipe;2, water outlet pipe;3, butt joint pipe;4, throttle orifice plate;5, throttle nozzle;6, drainage hole;7, gear ring;8, cleaning plate;9, butt joint groove;10, motor;11, driving rod;12, gear rod;13, positioning rod;14, limiting ring;15, auxiliary rod;16, limiting hole;17, spring;18, sealing layer;19, hollow ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only 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 those skilled in the art without creative labor fall within the scope of the utility model.

[0020] Please refer to Figures 1 to 5 The utility model provides a kind of boiler high pressure feed pump throttling device;Including inlet pipe 1, outlet pipe 2 and throttling component, inlet pipe 1 is equipped in the right end of throttling component, outlet pipe 2 is equipped in the left end of throttling component;

[0021] Throttling component includes the butt joint pipe 3 being connected with inlet pipe 1 and outlet pipe 2, the throttling orifice plate 4 being equipped in butt joint pipe 3 inside and throttling nozzle 5, the surface of throttling orifice plate 4 is provided with drain hole 6, the circumference of throttling orifice plate 4 is rotatably connected with gear ring 7, the side of gear ring 7, abuts in the part of drain hole 6 is equipped with cleaning plate 8, the inside of butt joint pipe 3 is equipped with driving gear ring 7 rotation driving part, drain hole 6 is cleaned by cleaning plate 8;

[0022] Among them, throttling orifice plate 4 and throttling nozzle 5 in throttling component, for prior art, do not make too much repetition here;The number of cleaning plate 8 is two, and symmetrically arranged with the vertical midline of gear ring 7 as the axis of symmetry.

[0023] As Figure 3 As shown in the figure, when gear ring 7 rotates, synchronously drive two cleaning plates 8 to rotate around drain hole 6, when abutting in drain hole 6, can partially block it, flexibly adjust the number of drain hole 6, to realize the accurate control to water flow rate;

[0024] Under different working conditions of boiler operation, such as initial stage of starting, low load operation or high load operation stage, the number of open drain holes can be changed according to actual demand;When low load, reduce the number of open drain holes, increase the degree of water flow throttling, reduce the flow rate;When high load, increase the number of open, meet the demand of large water volume of boiler, ensure that boiler high pressure feed pump is always in high efficiency operation state, improve its operation efficiency.

[0025] The two sides of butt joint pipe 3 are provided with butt joint groove 9, and one end of inlet pipe 1 and outlet pipe 2 is provided with positioning assembly used in cooperation with butt joint groove 9, and the positioning assembly comprises positioning rod 13 symmetrically arranged on the surface of inlet pipe 1 and outlet pipe 2 and limiting ring 14 arranged at one end of positioning rod 13, and limiting ring 14 extends to the inside of butt joint groove 9.

[0026] The auxiliary rod 15 is inserted into the positioning rod 13 and extends into the limiting hole 16, and the outer wall of the end of the auxiliary rod 15 extending into the positioning rod 13 is sleeved with a spring 17;

[0027] When the water inlet pipe 1 and the water outlet pipe 2 are connected with the docking pipe 3, the limiting ring 14 at one end of the positioning rod 13 is inserted into the docking groove 9, then the limiting ring 14 is rotated leftward and rightward, at this time, the auxiliary rod 15 is automatically extended into the limiting hole 16 at one end under the action of the spring 17 and is fixed, so that the installation of the water inlet pipe 1 and the water outlet pipe 2 is completed; when disassembling, the auxiliary rod 15 is pulled to move the end of the auxiliary rod 15 out of the limiting hole 16, then the auxiliary rod 15 is reversely rotated to be disassembled.

[0028] The driving member comprises a motor 10 arranged at the top of the docking pipe 3, a driving rod 11 arranged at the output end of the motor 10 and a gear rod 12 arranged in the docking pipe 3 and meshingly connected with the bottom end of the driving rod 11, and the gear rod 12 is meshingly connected with the gear ring 7.

[0029] The motor 10 is started to drive the driving rod 11, and the bottom end of the driving rod 11 and the right end of the gear rod 12 are provided with helical gears which are meshingly connected with each other, so that the gear rod 12 is synchronously driven to rotate, the gear rod 12 is provided with a straight gear on the surface and is meshingly connected with the gear ring 7, so that the gear ring 7 is synchronously driven to rotate, and under the cooperation of the cleaning plate 8, the gear ring 7 is driven to rotate on the surface of the throttle orifice plate 4, so that the impurities at the position of the drain hole 6 can be cleaned, and the number of the drain holes can be adjusted according to the working conditions.

[0030] The inner wall of the water inlet pipe 1 and the water outlet pipe 2 is provided with a sealing layer 18, the left side of the throttle orifice plate 4 is fixedly connected with a hollow ring 19, and the hollow ring 19 is fixedly connected to the inner wall of the docking pipe 3.

[0031] The inner wall of the water inlet pipe 1 and the water outlet pipe 2 is provided with a sealing layer 18, the left side of the throttle orifice plate 4 is fixedly connected with a hollow ring 19, and the hollow ring 19 is fixedly connected to the inner wall of the docking pipe 3.

[0032] The electrical components in the document are connected with a main controller and 220V mains electricity, and the main controller can be a conventional known device such as a computer.

[0033] In the utility model, the working steps of the device are as follows:

[0034] In use, the water inlet pipe 1 is connected with the water outlet end of the water pump, when the boiler high-pressure feed water pump works, water enters the throttling assembly from the water inlet pipe 1, the water firstly passes through the throttling orifice plate 4, is preliminarily throttled through the drain hole 6, then is further throttled through the throttling nozzle 5, and finally flows out from the water outlet pipe 2 to convey high-pressure feed water for the boiler.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boiler high pressure feed water pump throttling device, characterized by: Including water inlet pipe (1), water outlet pipe (2) and throttling assembly, the water inlet pipe (1) is established in the right end of throttling assembly, the water outlet pipe (2) is established in the left end of throttling assembly, The throttling assembly includes the butt joint pipe (3) connected with water inlet pipe (1) and water outlet pipe (2), the throttling orifice plate (4) and throttling nozzle (5) arranged inside butt joint pipe (3), the surface of throttling orifice plate (4) is provided with drainage hole (6), the circumference of throttling orifice plate (4) is rotatably connected with gear ring (7), the side of gear ring (7) is provided with cleaning plate (8) abutting in drainage hole (6), the inside of butt joint pipe (3) is provided with driving member for driving gear ring (7) to rotate, the drainage hole (6) is cleaned by cleaning plate (8); Both sides of butt joint pipe (3) are provided with butt joint groove (9), one end of water inlet pipe (1) and water outlet pipe (2) is provided with positioning assembly matched with butt joint groove (9).

2. A throttle device for a boiler high pressure feed water pump according to claim 1, characterized in that: The driving member includes motor (10) arranged at the top of butt joint pipe (3), driving rod (11) arranged at the output end of motor (10), and gear rod (12) arranged inside butt joint pipe (3) and engaged with the bottom end of driving rod (11), gear rod (12) is engaged with gear ring (7).

3. A boiler high pressure feed water pump throttling device according to claim 2, characterized in that: The positioning assembly includes positioning rod (13) symmetrically arranged on the surface of water inlet pipe (1) and water outlet pipe (2) and limiting ring (14) arranged at one end of positioning rod (13), limiting ring (14) extends to the inside of butt joint groove (9).

4. A boiler high pressure feed water pump throttling device according to claim 3, characterized in that: One end of positioning rod (13) of water inlet pipe (1) and water outlet pipe (2) is inserted with auxiliary rod (15), the inner bottom wall of butt joint groove (9) is provided with limiting hole (16), one end of auxiliary rod (15) penetrates positioning rod (13) and extends to the inside of limiting hole (16).

5. A boiler high pressure feed water pump throttling device according to claim 4, characterized in that: The outer wall of one end of positioning rod (13) extended into auxiliary rod (15) is sleeved with spring (17), the inner wall of water inlet pipe (1) and water outlet pipe (2) is provided with sealing layer (18).

6. A boiler high pressure feed water pump throttling device as claimed in claim 1, wherein: The left side of throttling orifice plate (4) is fixedly connected with hollow ring (19), the hollow ring (19) is fixedly connected to the inner wall of butt joint pipe (3).

Images