Denitration ash hopper material level switch

Abstract

The utility model discloses a denitration ash hopper material level switch, and specifically relates to the material level switch technology field, the denitration ash hopper material level switch comprises a hearth wall, a flange plate and an instrument housing, the surface of the hearth wall is provided with a detection groove, the top end of the detection groove is fixedly provided with a flange pipe, and the top end of the flange pipe is provided with the flange plate; a mounting hole is formed in the center of the top end of the flange plate, a bottom pipe is mounted in the mounting hole, a length adjusting assembly is arranged in the instrument shell, and the length adjusting assembly comprises an extension pipe, a bottom ring, a clamping jaw, an adjusting ring and an inclined table. According to the utility model, through the arrangement of the extension tube, the rotation of the adjusting ring and the threaded fit between the bottom ring and the adjusting ring, when the adjusting ring is driven to move downwards, the inclined table on the inner side loosens the compression on the clamping jaw, the fixation of the extension tube can be loosened, and at the moment, the exposed length of the extension tube can be adjusted, so that the position of the front end detection rod is adjusted; the position adjustability of the detection rod of the material level switch of the denitration ash hopper is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of level switches, in particular to a denitration ash hopper level switch. Background Technique

[0002] In recent years, collapse accidents caused by ash blockage in the ash conveying system have occurred frequently, which have a great impact on maintenance personnel and unit equipment. In order to effectively prevent such tragedies, the ash conveying system of thermal power plants has been studied and reformed. By strengthening the monitoring of the ash level at positions such as the denitration ash conveying flue, ash hopper, and silo pump of the boiler, the effective control of the denitration ash conveying system can be achieved. This device is the denitration ash hopper level switch. A level switch measurement point is added above each silo pump, and two level switch measurement points are added at the upper flue of each ash hopper, so as to strengthen the effective monitoring of the denitration ash conveying system and effectively prevent unit failures and personnel injuries caused by ash conveying hidden dangers;

[0003] When the denitration ash hopper level switch is in use, the detection head extends into the interior of the silo pump or flue. However, during use, it is not convenient to understand the depth position of the detection head as needed;

[0004] Therefore, a denitration ash hopper level switch is needed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a denitration ash hopper level switch to solve the problem that the denitration ash hopper level switch is not convenient to adjust the depth position of the detection head according to the usage requirements as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A denitration ash hopper level switch, including a furnace wall, a flange plate, and an instrument housing. A detection groove is provided on the surface of the furnace wall. A flange pipe is fixed at the top of the detection groove. A flange plate is installed at the top of the flange pipe. An installation hole is provided at the center position of the top of the flange plate. A bottom pipe is installed inside the installation hole. A length adjustment component is provided inside the instrument housing. The adjustment component includes an extension pipe, a bottom ring, a clamping jaw, an adjustment ring, and an inclined platform. The extension pipe is arranged inside the bottom pipe. The bottom ring is fixed at the bottom of the bottom pipe. The clamping jaw is fixed at the bottom of the bottom ring. The adjustment ring is arranged outside the bottom ring and the clamping jaw. An inclined platform is fixed on the inner side wall of the adjustment ring. A connecting platform is installed at the bottom of the inclined platform. A detection rod is installed at the bottom of the connecting platform.

[0007] Preferably, the instrument housing is installed at the top of the bottom pipe, and a wire pipe is fixed on one side of the instrument housing.

[0008] Preferably, a plurality of clamping jaws are fixed at the bottom of the bottom ring, and the plurality of clamping jaws are distributed in a ring shape.

[0009] Preferably, internal threads are provided inside the adjusting ring, and external threads are provided on the surface of the bottom ring.

[0010] Preferably, an electric push rod is installed on one side of the bottom end of the flange, and a lifting platform is installed at the bottom end of the electric push rod.

[0011] Preferably, a cleaning ring is installed on one side of the lifting platform, and cleaning brushes are installed on the inner side wall of the cleaning ring.

[0012] Preferably, an auxiliary groove is provided on one side of the top end of the flange. An observation window is provided inside the auxiliary groove, and a transparent plate is installed inside the observation window.

[0013] Preferably, two groups of transparent plates are provided inside the observation window, and the two groups of transparent plates are distributed in parallel.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing an extension tube, when the adjusting ring is rotated, through the thread fit between the bottom ring and the adjusting ring, when the adjusting ring is driven to move downward, after the inner inclined platform releases the pressure on the clamping jaws, the fixing of the extension tube can be released. At this time, the exposed length of the extension tube can be adjusted, thereby adjusting the position of the front-end detection rod, achieving the adjustability of the position of the detection rod of the denitrification ash hopper level switch;

[0015] By providing a cleaning ring and cleaning brushes, the cleaning ring is located outside the connecting platform and is driven by an electric push rod. When the electric push rod is started to extend and retract, the cleaning ring can be driven to move outside the connecting platform and the detection rod. In this way, the cleaning brushes inside the cleaning ring can clean the surface of the detection rod, avoiding the accumulation of sundries and affecting the use of the detection rod, achieving the self-cleaning property of the denitrification ash hopper level switch;

[0016] By providing an observation window, the observation window is used by being installed in the auxiliary groove on the surface of the flange through threads. Through the transparent plate inside the observation window, the operators outside can be assisted to observe the internal situation along the observation window, achieving the auxiliary observability during the use of the denitrification ash hopper level switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view sectional structure diagram of the present utility model;

[0018] Figure 2 is the top view structure diagram of the present utility model;

[0019] Figure 3 is the front view sectional structure diagram of the adjusting ring of the present utility model;

[0020] Figure 4 is the front view sectional structure diagram of the observation window of the present utility model.

[0021] In the figure: 1, furnace wall; 2, detection groove; 3, flange pipe; 4, flange; 5, mounting hole; 6, bottom pipe; 7, instrument housing; 8, wire pipe; 9, extension pipe; 10, bottom ring; 11, clamping jaw; 12, adjusting ring; 13, inclined platform; 14, connecting platform; 15, detection rod; 16, electric push rod; 17, lifting platform; 18, cleaning ring; 19, cleaning brush; 20, auxiliary groove; 21, observation window; 22, transparent plate. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-4 , an embodiment provided by the present invention: a denitrification ash hopper level switch, including a furnace wall 1, a flange 4 and an instrument housing 7. A detection groove 2 is provided on the surface of the furnace wall 1. A flange pipe 3 is fixed at the top of the detection groove 2. A flange 4 is installed at the top of the flange pipe 3. A mounting hole 5 is provided at the center position of the top of the flange 4. A bottom pipe 6 is installed inside the mounting hole 5. An instrument housing 7 is installed at the top of the bottom pipe 6. A wire pipe 8 is fixed on one side of the instrument housing 7. A length adjustment component is provided inside the instrument housing 7. The adjustment component includes an extension pipe 9, a bottom ring 10, a clamping jaw 11, an adjusting ring 12 and an inclined platform 13. An extension pipe 9 is provided inside the bottom pipe 6. A bottom ring 10 is fixed at the bottom of the bottom pipe 6. A clamping jaw 11 is fixed at the bottom of the bottom ring 10. A plurality of clamping jaws 11 are fixed at the bottom of the bottom ring 10. The plurality of clamping jaws 11 are distributed in a ring shape. An adjusting ring 12 is provided outside the bottom ring 10 and the clamping jaw 11. Internal threads are provided inside the adjusting ring 12. External threads are provided on the surface of the bottom ring 10. An inclined platform 13 is fixed on the inner side wall of the adjusting ring 12. A connecting platform 14 is installed at the bottom of the inclined platform 13. A detection rod 15 is installed at the bottom of the connecting platform 14;

[0024] Specifically, as Figure 1 and Figure 3 shown, when in use, rotate the adjusting ring 12. When moving downward with the assistance of the thread between it and the bottom ring 10, the inclined platform 13 inside loosens the oppression on the clamping jaw 11. At this time, the clamping jaw 11 can loosen the fixation of the extension pipe 9. Thus, the extension pipe 9 can move up and down along the bottom pipe 6 to adjust the position of the lower detection rod 15. After the adjustment is completed, rotate the adjusting ring 12 upward. The inclined platform 13 inside presses the clamping jaw 11, and the clamping jaw 11 clamps the extension pipe 9 inward, and the fixation of the extension pipe 9 can be completed;

[0025] One side of the bottom end of the flange 4 is provided with an electric push rod 16. The bottom end of the electric push rod 16 is provided with a lifting platform 17. One side of the lifting platform 17 is provided with a cleaning ring 18. A cleaning brush 19 is installed on the inner side wall of the cleaning ring 18;

[0026] Specifically, as Figure 1 shown, during use, when the electric push rod 16 is started to expand and contract, the cleaning ring 18 can be driven to move up and down along the detection rod 15. At this time, the cleaning brush 19 inside the cleaning ring 18 contacts the surface of the detection rod 15, and can assist in cleaning the possible attachments on the surface of the detection rod 15;

[0027] One side of the top end of the flange 4 is provided with an auxiliary groove 20. An observation window 21 is arranged inside the auxiliary groove 20. A transparent plate 22 is installed inside the observation window 21. There are two groups of transparent plates 22 arranged inside the observation window 21, and the two groups of transparent plates 22 are distributed in parallel;

[0028] Specifically, as Figure 1 and Figure 4 shown, during use, the observation window 21 is located on the flange 4. Through the two groups of transparent plates 22 inside the observation window 21, it can assist the operator to observe the internal situation, and through this detection point, manual observation processing is realized.

[0029] Working principle: During use, the flange pipe 3 is welded on the furnace wall 1, and a detection groove 2 is opened inside as a detection point. The flange 4 is butted against the flange pipe 3 and fixed by bolts, and then the installation operation of the level switch can be completed. The detection rod 15 extends into the interior for monitoring. Before installation, the position where the detection rod 15 extends can be adjusted. When the adjusting ring 12 is rotated and moves downward with the assistance of the thread between it and the bottom ring 10, the inner inclined platform 13 releases the oppression on the clamping jaw 11. At this time, the clamping jaw 11 can release the fixation on the extension pipe 9. Thus, the extension pipe 9 can move up and down along the bottom pipe 6 to adjust the position of the lower detection rod 15 and control the extending position of the detection rod 15. After the adjustment is completed, the adjusting ring 12 is rotated upward, and the inner inclined platform 13 presses the clamping jaw 11, and the clamping jaw 11 clamps the extension pipe 9 inward, and then the fixation of the extension pipe 9 can be completed. After the level switch is installed, the point monitoring can be carried out. Regularly, the electric push rod 16 can be started. The electric push rod 16 can drive the cleaning ring 18 to move outside the detection rod 15. The cleaning brush 19 inside the cleaning ring 18 contacts the surface of the detection rod 15. With the assistance of the cleaning brush 19, the possible attachments on the surface of the detection rod 15 can be cleaned. An observation window 21 is installed at the auxiliary groove 20 on the flange 4. Through the transparent plate 22 inside the observation window 21, it can assist the operator to observe the internal situation, and through this detection point, manual observation processing is realized.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A denitration ash hopper level switch, comprising a furnace wall (1), a flange (4) and an instrument housing (7), characterized in that: The surface of the furnace wall (1) is provided with a detection groove (2), a flange pipe (3) is fixed at the top of the detection groove (2), a flange plate (4) is installed at the top of the flange pipe (3), a mounting hole (5) is provided at the center position of the top of the flange plate (4), a bottom pipe (6) is installed inside the mounting hole (5), and a length adjustment component is provided inside the instrument housing (7); The length adjustment component comprises an extension tube (9), a bottom ring (10), a clamping claw (11), an adjustment ring (12) and an inclined platform (13); the extension tube (9) is arranged inside the bottom tube (6); the bottom end of the bottom tube (6) is fixed with a bottom ring (10); the bottom end of the bottom ring (10) is fixed with a clamping claw (11); the outer sides of the bottom ring (10) and the clamping claw (11) are arranged with an adjustment ring (12); the inner side wall of the adjustment ring (12) is fixed with an inclined platform (13); the bottom end of the inclined platform (13) is installed with a connecting platform (14); the bottom end of the connecting platform (14) is installed with a detection rod (15).

2. A denitration ash hopper level switch according to claim 1, characterized in that: A meter housing (7) is installed at the top end of the bottom tube (6), and a wire tube (8) is fixed to one side of the meter housing (7).

3. A denitration ash hopper level switch according to claim 1, characterized in that: A plurality of the clamping jaws (11) are fixed at the bottom end of the bottom ring (10), and the plurality of the clamping jaws (11) are distributed in a ring shape.

4. A denitration ash hopper level switch according to claim 1, characterized in that: The interior of the adjusting ring (12) is provided with an internal thread, and the surface of the bottom ring (10) is provided with an external thread.

5. A denitration ash hopper level switch according to claim 1, characterized in that: An electric push rod (16) is installed on one side of the bottom end of the flange (4), and a lifting platform (17) is installed on the bottom end of the electric push rod (16).

6. A denitration ash hopper level switch according to claim 5, characterized in that: A cleaning ring (18) is installed on one side of the lifting platform (17), and a cleaning brush (19) is installed on the inner side wall of the cleaning ring (18).

7. A denitration ash hopper level switch according to claim 1, characterized in that: An auxiliary groove (20) is provided on one side of the top end of the flange (4), an observation window (21) is provided inside the auxiliary groove (20), and a transparent plate (22) is installed inside the observation window (21).

8. A denitration ash hopper level switch according to claim 7, characterized in that: Two groups of the transparent plates (22) are arranged inside the observation window (21), and the two groups of the transparent plates (22) are distributed in parallel.

Images