Desulfurization slurry circulating pump nozzle blockage early warning device based on multi-parameter fusion

Abstract

The utility model provides a desulfurization slurry circulating pump nozzle blockage early warning device based on multi-parameter fusion, which solves the problems of nozzle blockage early warning and the like, and comprises a transfer pipe, transfer sleeves are respectively arranged at two ends of the transfer pipe, the transfer pipe is connected with a buffer tank, a pressure sensor is arranged in the buffer tank, and a flow meter is arranged on the transfer pipe. And independently-controlled flow adjusting assemblies are arranged between the adapter sleeves and the adapter pipes correspondingly. The device has the advantages of good monitoring effect, stable structure and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power plant desulfurization equipment technical field, concretely relates to a kind of desulfurization slurry circulating pump spray head block early warning device based on multi-parameter fusion. BACKGROUND

[0002] Desulfurization slurry circulating pump is rotated by impeller, and does work to desulfurization slurry (usually including limestone slurry and other related mixed ingredients for absorbing sulfur dioxide) entering pump body, so that it obtains kinetic energy and pressure energy, so that it can continuously circulate between the pipeline and related equipment of desulfurization system, to ensure that desulfurization reaction can continue and be carried out fully. When desulfurization ultra-low emission is reformed, slurry nozzle is mainly selected as high-efficiency hollow cone nozzle. But it is easy to be blocked in actual working process, and if there is no responsive monitoring alarm system, it will cause nozzle pressure to be too large and accident occurs. The existing monitoring equipment can only meet fault detection, and cannot monitor internal slurry flow state, so as to early warn spray head block.

[0003] In order to solve the problems in the prior art, people have carried out long-term exploration and proposed various solutions. For example, Chinese patent documents disclose a side-in high-efficiency desulfurization spray head [201710915200.3], which comprises a protective sleeve, a connecting screw, a front sealing plate, a cylinder, a first cavity, a second cavity, a rear sealing plate, a slurry inlet pipeline, a connecting flange, a crushing and pressurizing flow channel, and a nozzle. The first cavity and the second cavity are both annular structures with openings at both ends and are connected to each other to form a hollow cavity. The crushing and pressurizing flow channel is located inside the hollow cavity. The nozzle is installed inside the protective sleeve and is connected to the first cavity by the connecting screw. The slurry inlet pipeline is connected to the second cavity away from the first cavity.

[0004] The above-mentioned scheme solves the problem of spray head block to some extent, but the scheme still has many problems, such as being unable to early warn spray head block. SUMMARY

[0005] The utility model aims at the above problem, provides a kind of based on multi-parameter fusion's desulfurization slurry circulating pump spray head block early warning device with reasonable design, and has good monitoring early warning effect.

[0006] To achieve the above object, the utility model adopts the following technical scheme: the present based on multi-parameter fusion's desulfurization slurry circulating pump spray head block early warning device, including adapter pipe, adapter pipe two ends are respectively equipped with adapter sleeve, adapter pipe is connected with buffer tank and buffer tank is built-in pressure sensor, and flowmeter is installed on adapter pipe, and independently controlled flow regulating assembly is respectively arranged between adapter sleeve and adapter pipe.

[0007] The flow regulating assembly comprises a sealing rubber tube attached to the inside of the adapter sleeve, an adjusting cavity is left between the sealing rubber tube and the adapter sleeve, and a converging assembly is installed on the adjusting cavity and presses the sealing rubber tube.

[0008] The converging assembly comprises a converging plate rotationally installed in the adjusting cavity and arranged in a central symmetry, the end of the converging plate is attached to and pressed against the sealing rubber tube, the rotationally connected part of the converging plate and the adjusting cavity is engaged and driven by a converging gear ring rotationally installed in the adjusting cavity, and the adapter sleeve is provided with a converging motor in transmission connection with the converging gear ring.

[0009] The edge of the converging plate is rounded, and the sealing rubber tube is made of polyester rubber.

[0010] The cutoff valve and the pressure relief pipe are installed between the buffer tank and the adapter pipe.

[0011] The buffer tank comprises a main tank body, and the main tank body is of a diaphragm type.

[0012] The adapter pipe is connected with a shunt pipe, and the cutoff valve is installed between the shunt pipe and the adapter pipe.

[0013] The adapter pipe and the adapter sleeve are provided with a spiral sealing assembly.

[0014] The spiral sealing assembly comprises external threads arranged at the end of the adapter pipe, internal threads arranged at the end of the adapter sleeve, a sealing step surface on the inside of the adapter sleeve and pressing against the end of the adapter pipe, and a sealing groove provided on the sealing step surface and used for placing a sealing ring.

[0015] The adapter pipe is made of stainless steel and is chrome-plated on the surface.

[0016] Compared with the prior art, the advantages of the utility model lie in: the flow regulating assembly dynamically adjusts the flow inside the adapter pipe, the flow meter and the pressure sensor realize multi-sensing data acquisition, abnormal flow change caused by nozzle blockage is prewarned, the adapter pipe is connected with the pressure relief pipe and the buffer tank, has good buffer pressure relief effect on slurry flow, avoids that fluctuation is too large to influence monitoring effect, the adapter sleeve can be disassembled and replaced according to actual needs, thereby indicating the adapter pipe of different specifications and lengths. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the structure schematic view of the utility model;

[0018] Fig. 2 It is the structure sectional view of the utility model;

[0019] Fig. 3 It is another structure sectional view of the utility model;

[0020] In the drawing, adapter pipe 1, adapter sleeve 2, buffer tank 3, main tank body 31, flow regulating assembly 4, sealing rubber tube 41, adjusting cavity 42, collection assembly 5, collection plate 51, collection gear 52, collection tooth ring 53, collection motor 54, pressure relief pipe 6, shunt pipe 7, spiral sealing assembly 8, external thread 81, internal thread 82, sealing step surface 83, sealing ring 84, sealing groove 85. DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail in combination with the drawings and specific embodiment.

[0022] As Figs. 1-3 Shown, this based on the desulfurization slurry circulating pump nozzle blockage early warning device of multi-parameter fusion, including adapter pipe 1, and the adapter pipe 1 both ends are installed with adapter sleeve 2, and this adapter sleeve 2 is connected with the nozzle or slurry pipeline.Adapter pipe 1 is connected with buffer tank 3 and is built-in pressure sensor in buffer tank 3, and the slurry transmission in adapter pipe 1 is buffered by buffer tank 3, and the monitoring error caused by internal pressure fluctuation is reduced.Adapter pipe 1 is installed with flow meter, and the adapter sleeve 2 and adapter pipe 1 between are provided with independently controlled flow regulating assembly 4 respectively, and flow regulating assembly 4 adjusts the internal flux of adapter sleeve 2 periodically, thereby gathers the internal flow variation trend of adapter pipe 1 under different time, and promptly prewarns nozzle blockage.

[0023] Specifically, unlike the conventional flow regulating valve body structure, the flow regulating assembly 4 in the embodiment includes a sealing rubber tube 41 attached to the inside of the adapter sleeve 2. The sealing rubber tube 41 and the adapter sleeve 2 have an adjusting cavity 42 therebetween, and the adjusting cavity 42 is installed with a collection assembly 5 pressing against the sealing rubber tube 41. The collection assembly 5 adjusts the inside diameter of the sealing rubber tube 41 to achieve stepless adjustment of the flux.

[0024] In detail, the converging assembly 5 has a large adjustment range, which specifically comprises converging plates 51 rotationally mounted in the adjustment cavity 42 and arranged in a central symmetry, the ends of the converging plates 51 being in abutting compression with the side of the sealing rubber tube 41, the rotationally connected part of the converging plates 51 and the adjustment cavity 42 being in meshing transmission through a converging gear 52 and a converging gear ring 53 rotationally mounted in the adjustment cavity 42, and the converging motor 54 mounted on the adapter sleeve 2 being in transmission connection with the converging gear ring 53. When the converging motor 54 drives the converging gear 52 and the converging gear ring 53 to rotate in opposite directions, the relative included angle of the adjacent converging plates 51 changes, and the central passage diameter also adjusts accordingly.

[0025] Further, in order to reduce the friction on the sealing rubber tube 41, the edges of the converging plates 51 are rounded, and the sealing rubber tube 41 is made of polyester rubber, which has good elasticity and service life and can withstand the movement of the converging assembly 5, thereby ensuring the sealing of the inside of the adapter sleeve 2.

[0026] Further, the stop valve and the pressure relief pipe 6 are installed between the buffer tank 3 and the adapter pipe 1, when the slurry pressure in the adapter pipe 1 fluctuates greatly, the stop valve is opened to make the pressure relief pipe 6 relieve pressure, and the flow meter detects the flow change and sends an alarm signal.

[0027] In addition, similar to the conventional buffer structure, the buffer tank 3 in the embodiment comprises a main tank body 31, which adopts a diaphragm type buffer to ensure sealing effect, and the stop valve is opened to stabilize the pressure of the buffer tank 3.

[0028] At the same time, the adapter pipe 1 is connected with a shunt pipe 7, the stop valve is installed between the shunt pipe 7 and the adapter pipe 1, the shunt pipe 7 is connected with the spray head through other pipe body structure, so as to realize pipeline expansion.

[0029] Obviously, the adapter pipe 1 and the adapter sleeve 2 can be flexibly connected, and the spiral sealing assembly 8 is arranged therebetween to ensure the structural sealing after connection. A plurality of adapter pipes 1 can be connected through the adapter sleeve 2, so as to increase the flow monitoring points and reduce the monitoring error.

[0030] Obviously, the spiral sealing assembly 8 comprises an external thread 81 arranged at the end of the adapter pipe 1, an internal thread 82 arranged in the end of the adapter sleeve 2, a sealing step surface 83 arranged on the inner side of the adapter sleeve 2 and abutting against the end of the adapter pipe 1, and a sealing groove 85 formed in the sealing step surface 83 and in which a sealing ring 84 is arranged.

[0031] Preferably, the adapter pipe 1 is made of stainless steel and has a chrome-plated surface, so as to have good corrosion resistance and meet the slurry desulfurization transmission requirements, and has good adaptability to different environments.

[0032] In summary, the principle of the embodiment is that the adapter sleeve 2 at both ends of the adapter pipe 1 is internally provided with a flow regulating assembly 4, which periodically adjusts the internal caliber of the adapter sleeve 2, and the flow meter measures the flow changes at different times to give an early warning of the clogging of the spray head.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0034] Although the terms adapter pipe 1, adapter sleeve 2, buffer tank 3, main tank body 31, flow regulating assembly 4, sealing rubber tube 41, regulating cavity 42, converging assembly 5, converging plate 51, converging gear 52, converging gear ring 53, converging motor 54, pressure relief pipe 6, shunt pipe 7, spiral sealing assembly 8, external thread 81, internal thread 82, sealing step surface 83, sealing ring 84, sealing groove 85, etc. are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is merely to facilitate the description and explanation of the essence of the present application; any interpretation of them as an additional limitation is contrary to the spirit of the present application.

Claims

1. A multi-parameter fusion-based desulfurization slurry circulating pump nozzle blockage early warning device, comprising an adapter pipe (1), the two ends of the adapter pipe (1) are respectively provided with an adapter sleeve (2), characterized in that, The adapter pipe (1) is connected with a buffer tank (3) and the buffer tank (3) is provided with a pressure sensor, a flow meter is installed on the adapter pipe (1), and the adapter sleeve (2) and the adapter pipe (1) are respectively provided with independently controlled flow regulating assemblies (4).

2. The multi-parameter fusion-based desulfurized slurry circulating pump nozzle blockage early warning device according to claim 1, characterized in that, The flow regulating assembly (4) comprises a sealing rubber tube (41) attached to the inner side of the adapter sleeve (2), an adjusting cavity (42) is left between the sealing rubber tube (41) and the adapter sleeve (2), and a converging assembly (5) is installed in the adjusting cavity (42) and presses the sealing rubber tube (41).

3. The multi-parameter fusion-based desulfurized slurry circulating pump nozzle blockage early warning device according to claim 2, characterized in that, The converging assembly (5) comprises a converging plate (51) rotatably installed in the adjusting cavity (42) and arranged in a central symmetry, the end of the converging plate (51) is attached to and pressed against the sealing rubber tube (41), the converging plate (51) is rotatably connected with the adjusting cavity (42), the converging gear (52) is engaged with the converging gear ring (53) rotatably installed in the adjusting cavity (42), and the converging motor (54) is installed on the adapter sleeve (2) and is in transmission connection with the converging gear ring (53).

4. The multi-parameter fusion-based desulfurized slurry circulating pump nozzle blockage early warning device according to claim 2, characterized in that, The converging plate (51) is rounded at the edge, and the sealing rubber tube (41) is made of polyester rubber.

5. The multi-parameter fusion based desulfurized slurry circulating pump nozzle blockage early warning device according to claim 1, characterized in that, A stop valve and a pressure relief pipe (6) are installed between the buffer tank (3) and the adapter pipe (1).

6. The multi-parameter fusion based desulfurized slurry circulating pump nozzle blockage early warning device according to claim 1, characterized in that, The buffer tank (3) comprises a main tank body (31), and the main tank body (31) is a diaphragm type buffer.

7. The multi-parameter fusion based desulfurized slurry circulating pump nozzle blockage early warning device according to claim 1, characterized in that, A shunt pipe (7) is connected to the side of the adapter pipe (1), and a stop valve is installed between the shunt pipe (7) and the adapter pipe (1).

8. The multi-parameter fusion based desulfurized slurry circulating pump nozzle blockage early warning device according to claim 1, characterized in that, A spiral sealing assembly (8) is arranged between the adapter pipe (1) and the adapter sleeve (2).

9. The multi-parameter fusion based desulfurized slurry circulating pump nozzle blockage early warning device according to claim 8, characterized in that, The spiral sealing assembly (8) comprises an external thread (81) arranged at the end of the adapter pipe (1), an internal thread (82) arranged at the end of the adapter sleeve (2), a sealing step surface (83) arranged on the inner side of the adapter sleeve (2) and pressing against the end of the adapter pipe (1), and a sealing groove (85) formed in the sealing step surface (83) and in which a sealing ring (84) is arranged.

10. The multi-parameter fusion based desulfurized slurry circulating pump nozzle blockage early warning device according to claim 1, characterized in that, The adapter pipe (1) is made of stainless steel and is chrome-plated on the surface.

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