Device for monitoring leakage of CEMS sampling pipeline

Abstract

The utility model relates to the technical field of CEMS sampling pipes, and discloses a device for monitoring leakage of a CEMS sampling pipeline, which comprises a flue gas pipe, the outer surface of the flue gas pipe is communicated with a communicating flange, the right side of the communicating flange is fixedly provided with a connecting flange through a connecting bolt, the outer surface of the connecting flange is fixedly provided with a flue gas closed box, and the flue gas closed box is fixedly provided with a gas outlet. According to the device for monitoring leakage of the CEMS sampling pipeline, a first connecting plate and a second connecting plate are driven by a positive and negative threaded rod to move inwards, the first connecting plate drives a first sealing sleeve to move backwards, the second connecting plate drives a second sealing sleeve to move forwards, and a sealing rubber strip tightly attached to the sampling pipeline is separated from the tightly attached state; then a user draws out the collecting pipeline from the connecting flange, and when the left end of the collecting pipeline leaves the flue gas closed box, the motor drives the rotating shaft to rotate, the rotating shaft drives the gear block to move through the gear, and the gear block drives the closed plate to move downwards to block the hole of the flue gas closed box.

Description

Technical Field

[0001] The utility model relates to the technical field of CEMS sampling tubes, in particular to a device for monitoring leakage of a CEMS sampling pipeline. Background Art

[0002] CEMS refers to a device that continuously monitors the concentration and total amount of gaseous pollutants and particulate matter emitted by air pollution sources and transmits the information in real time to the competent authorities. It is called "flue gas automatic monitoring system". CEMS consists of a gaseous pollutant monitoring subsystem, a particulate matter monitoring subsystem, a flue gas parameter monitoring subsystem, etc., and is used to collect samples of dust and water in power plant flues, cement production processes, etc.

[0003] The collection pipeline is usually inserted into a flange connected to the flue, and the air pressure inside the flue is different from the external air pressure. Simply adding a sealing strip to the flange cannot achieve a sealing effect. Smoke may still be ejected from the gap between the flange and the collection pipeline, causing gas leakage in the collection pipeline. When removing the collection pipeline, it is usually necessary to close the flue, but smoke will still be ejected from the flange when removing it. Therefore, a device for monitoring CEMS sampling pipeline leakage with good sealing effect is required. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a device for monitoring leakage of a CEMS sampling pipeline, which can effectively solve the problems of the prior art.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The utility model discloses a device for monitoring leakage of a CEMS sampling pipeline, comprising a flue gas pipe, wherein the outer surface of the flue gas pipe is connected with a connecting flange, a connecting flange is fixedly installed on the right side of the connecting flange by connecting bolts, a flue gas sealing box is fixedly installed on the outer surface of the connecting flange, a sealing mechanism is fixedly installed in the inner cavity of the flue gas sealing box, the sealing mechanism comprises a fixing frame, a motor, a rotating shaft, a gear, a gear block and a sealing plate, a collection pipeline is fixedly installed on the inner surface of the connecting flange, a pipeline sealing box is fixedly installed on the outer surface of the connecting flange and located on the right side of the flue gas sealing box, a pipeline sealing mechanism is fixedly installed in the inner cavity of the pipeline sealing box, the pipeline sealing mechanism comprises positive and negative threaded rods, a No. 1 sealing sleeve, a No. 2 sealing sleeve, a sealing rubber strip, a No. 1 connecting plate and a No. 2 connecting plate, and the inner walls of the flue gas sealing box and the pipeline sealing box are fixedly installed with smoke detectors.

[0009] Furthermore, the outer surface of the motor is fixedly connected to the inner surface of the fixing frame, and the output end of the motor is fixedly connected to the outer surface of the rotating shaft via a speed reducer.

[0010] Furthermore, the outer surface of the rotating shaft is fixedly connected to the inner surface of the gear, and the outer surface of the gear is meshed with the outer surface of the gear block.

[0011] Furthermore, the left side of the tooth block is fixedly connected to the right side of the sealing plate, and the left side of the sealing plate is slidably connected to the inner wall of the smoke sealing box.

[0012] Furthermore, the outer surfaces of the forward and reverse threaded rods are threadedly connected to the inner surfaces of the first connecting plate and the second connecting plate, and the rear ends of the forward and reverse threaded rods penetrate the pipeline sealing box and extend to the outside of the pipeline sealing box.

[0013] Furthermore, the bottom of the No. 1 connecting plate is fixedly connected to the top of the No. 1 sealing sleeve, and the bottom of the No. 2 connecting plate is fixedly connected to the top of the No. 2 sealing sleeve.

[0014] Furthermore, the inner surfaces of the No. 1 and No. 2 sealing sleeves are fixedly connected to the outer surface of the sealing rubber strip, the inner surface of the sealing rubber strip is fixedly connected to the outer surface of the collection pipeline, and the left sides of the No. 1 and No. 2 sealing sleeves are both slidably connected to the inner wall of the pipeline sealing box.

[0015] (III) Beneficial effects

[0016] Compared with the known public technology, the technical solution provided by the utility model has the following beneficial effects:

[0017] 1. The utility model adds a design to prevent smoke from overflowing when replacing the collection pipeline. The motor drives the rotating shaft to rotate, the rotating shaft drives the tooth block to move through the gear, the tooth block drives the sealing plate to move downward, and then the smoke pipe and the connecting flange are used in coordination with the connecting flange and the smoke sealing box, so that the hole of the smoke sealing box can be blocked as soon as the collection pipeline is pulled out of the smoke sealing box, effectively preventing the smoke from spraying out from the connecting flange when replacing and repairing the collection pipeline, and there is no need to close the smoke pipe to repair and replace the collection pipeline.

[0018] 2. The utility model adds a design to prevent smoke from overflowing during the use of the collection pipeline. The forward and reverse threaded rods drive the No. 1 connecting plate and the No. 2 connecting plate to move inward, the No. 1 connecting plate drives the No. 1 sealing sleeve to move backward, and the No. 2 connecting plate drives the No. 2 sealing sleeve to move forward. The No. 1 sealing sleeve and the No. 2 sealing sleeve are used in conjunction with the sealing rubber strip and the collection pipeline to plug the gap between the pipeline sealing box and the collection pipeline. The smoke detector is used in conjunction to detect in real time whether there is a smoke leakage problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0021] Figure 2 It is a three-dimensional structural cross-sectional view of the connecting flange, the smoke sealing box and the pipeline sealing box in the embodiment;

[0022] Figure 3 A three-dimensional structural diagram of the pipeline sealing mechanism in the embodiment;

[0023] The numbers in the figure represent respectively: 1. Smoke pipe; 2. Connecting flange; 3. Connecting bolt; 4. Connecting flange; 5. Smoke sealing box; 6. Sealing mechanism; 61. Fixed frame; 62. Motor; 63. Rotating shaft; 64. Gear; 65. Gear block; 66. Sealing plate; 7. Collection pipeline; 8. Pipeline sealing box; 9. Pipeline sealing mechanism; 91. Positive and negative threaded rod; 92. No. 1 sealing sleeve; 93. No. 2 sealing sleeve; 94. Sealing rubber strip; 95. No. 1 connecting plate; 96. No. 2 connecting plate; 10. Smoke detector. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model is further described below in conjunction with embodiments.

[0026] Reference Figure 1-3 , a device for monitoring leakage of a CEMS sampling pipeline in the present embodiment comprises a flue gas pipe 1, the outer surface of the flue gas pipe 1 is connected with a connecting flange 2, a connecting flange 4 is fixedly installed on the right side of the connecting flange 2 through a connecting bolt 3, a flue gas sealing box 5 is fixedly installed on the outer surface of the connecting flange 4, a sealing mechanism 6 is fixedly installed in the inner cavity of the flue gas sealing box 5, the sealing mechanism 6 comprises a fixing frame 61, a motor 62, a rotating shaft 63, a gear 64, a gear block 65 and a sealing plate 66, a collection pipeline 7 is fixedly installed on the inner surface of the connecting flange 4, a pipeline sealing box 8 is fixedly installed on the outer surface of the connecting flange 4 and located on the right side of the flue gas sealing box 5, a pipeline sealing mechanism 9 is fixedly installed in the inner cavity of the pipeline sealing box 8, the pipeline sealing mechanism 9 comprises a positive and negative threaded rod 91, a No. 1 sealing sleeve 92, a No. 2 sealing sleeve 93, a sealing rubber strip 94, a No. 1 connecting plate 95 and a No. 2 connecting plate 96, and a flue gas detector 10 is fixedly installed on the inner walls of the flue gas sealing box 5 and the pipeline sealing box 8.

[0027] The outer surface of the motor 62 is fixedly connected to the inner surface of the fixing frame 61 , and the output end of the motor 62 is fixedly connected to the outer surface of the rotating shaft 63 via a speed reducer.

[0028] The outer surface of the rotating shaft 63 is fixedly connected to the inner surface of the gear 64 , and the outer surface of the gear 64 is meshed with the outer surface of the gear block 65 .

[0029] The left side of the tooth block 65 is fixedly connected to the right side of the sealing plate 66 , and the left side of the sealing plate 66 is slidably connected to the inner wall of the smoke sealing box 5 .

[0030] The contact portion between the sealing plate 66 and the smoke sealing box 5 is wrapped with a sealing leather package having good elasticity, which can enhance the sealing effect of the sealing plate 66 .

[0031] The outer surfaces of the forward and reverse threaded rods 91 are both threadedly connected to the inner surfaces of the first connecting plate 95 and the second connecting plate 96 , and the rear ends of the forward and reverse threaded rods 91 penetrate the pipeline sealing box 8 and extend to the outside of the pipeline sealing box 8 .

[0032] The two threads on the forward and reverse threaded rod 91 are symmetrical and have opposite angles, so that the first connecting plate 95 and the second connecting plate 96 move the same distance on the forward and reverse threaded rod 91.

[0033] The bottom of the No. 1 connecting plate 95 is fixedly connected to the top of the No. 1 sealing sleeve 92 , and the bottom of the No. 2 connecting plate 96 is fixedly connected to the top of the No. 2 sealing sleeve 93 .

[0034] The inner surfaces of the No. 1 sealing sleeve 92 and the No. 2 sealing sleeve 93 are fixedly connected to the outer surface of the sealing rubber strip 94, the inner surface of the sealing rubber strip 94 is fixedly connected to the outer surface of the collection pipeline 7, and the left sides of the No. 1 sealing sleeve 92 and the No. 2 sealing sleeve 93 are both slidably connected to the inner wall of the pipeline sealing box 8.

[0035] The surfaces of the No. 1 sealing sleeve 92 and the No. 2 sealing sleeve 93 close to the inner wall of the pipeline sealing box 8 are both installed with sealing rubber strips 94, so that smoke will not overflow from the gap between the No. 1 sealing sleeve 92 and the No. 2 sealing sleeve 93 and the pipeline sealing box 8.

[0036] In summary, when the collection pipeline 7 needs to be replaced, the user first uses a cross screwdriver to rotate the forward and reverse threaded rod 91, and the forward and reverse threaded rod 91 drives the No. 1 connecting plate 95 and the No. 2 connecting plate 96 to move inward, and the No. 1 connecting plate 95 drives the No. 1 sealing sleeve 92 to move backward, and the No. 2 connecting plate 96 drives the No. 2 sealing sleeve 93 to move forward, so that the sealing rubber strip 94 that is tightly attached to the collection pipeline 7 is separated from the tight state, and then the user pulls the collection pipeline 7 out of the connecting flange 4. When the left end of the collection pipeline 7 leaves the smoke sealing box 5, the motor 62 drives the rotating shaft 63 to rotate. The rotating shaft 63 drives the tooth block 65 to move through the gear 64, and the tooth block 65 drives the sealing plate 66 to move downward to block the hole of the smoke sealing box 5, so that the smoke will not enter the smoke sealing box 5. Then the user pulls out the collection pipeline 7 completely, reinserts the new collection pipeline 7 into the connecting flange 4, and then reopens the sealing plate 66 to allow the collection pipeline 7 to pass through the smoke sealing box 5 into the smoke pipe 1. Then the user reverses the forward and reverse threaded rods 91 to move the No. 1 sealing sleeve 92 and the No. 2 sealing sleeve 93 inward, and tightly attaches the sealing rubber strip 94 to the collection pipeline 7.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for monitoring leakage of a CEMS sampling line, comprising a flue gas pipe (1), characterized in that: The outer surface of the flue gas pipe (1) is connected to a connecting flange (2), and a connecting flange (4) is fixedly mounted on the right side of the connecting flange (2) via a connecting bolt (3). A flue gas sealing box (5) is fixedly mounted on the outer surface of the connecting flange (4), and a sealing mechanism (6) is fixedly mounted in the inner cavity of the flue gas sealing box (5). The sealing mechanism (6) comprises a fixing frame (61), a motor (62), a rotating shaft (63), a gear (64), a gear block (65) and a sealing plate (66). A collecting device (61) is fixedly mounted on the inner surface of the connecting flange (4). The pipeline (7) is fixedly mounted with a pipeline sealing box (8) on the outer surface of the connecting flange (4) and located on the right side of the smoke sealing box (5); the inner cavity of the pipeline sealing box (8) is fixedly mounted with a pipeline sealing mechanism (9); the pipeline sealing mechanism (9) comprises a positive and negative threaded rod (91), a No. 1 sealing sleeve (92), a No. 2 sealing sleeve (93), a sealing rubber strip (94), a No. 1 connecting plate (95) and a No. 2 connecting plate (96); the inner walls of the smoke sealing box (5) and the pipeline sealing box (8) are fixedly mounted with a smoke detector (10).

2. The device for monitoring leakage of a CEMS sampling line according to claim 1, characterized in that: The outer surface of the motor (62) is fixedly connected to the inner surface of the fixing frame (61), and the output end of the motor (62) is fixedly connected to the outer surface of the rotating shaft (63) via a speed reducer.

3. The device for monitoring leakage of a CEMS sampling line according to claim 1, characterized in that: The outer surface of the rotating shaft (63) is fixedly connected to the inner surface of the gear (64), and the outer surface of the gear (64) is meshed with the outer surface of the gear block (65).

4. The device for monitoring leakage of a CEMS sampling line according to claim 1, characterized in that: The left side of the tooth block (65) is fixedly connected to the right side of the sealing plate (66), and the left side of the sealing plate (66) is slidably connected to the inner wall of the smoke sealing box (5).

5. The device for monitoring leakage of a CEMS sampling line according to claim 1, characterized in that: The outer surfaces of the forward and reverse threaded rods (91) are both threadedly connected to the inner surfaces of the first connecting plate (95) and the second connecting plate (96), and the rear ends of the forward and reverse threaded rods (91) penetrate the pipeline sealing box (8) and extend to the outside of the pipeline sealing box (8).

6. The device for monitoring leakage of a CEMS sampling line according to claim 1, characterized in that: The bottom of the No. 1 connecting plate (95) is fixedly connected to the top of the No. 1 sealing sleeve (92), and the bottom of the No. 2 connecting plate (96) is fixedly connected to the top of the No. 2 sealing sleeve (93).

7. The device for monitoring leakage of a CEMS sampling line according to claim 1, characterized in that: The inner surfaces of the No. 1 sealing sleeve (92) and the No. 2 sealing sleeve (93) are fixedly connected to the outer surface of the sealing rubber strip (94), the inner surface of the sealing rubber strip (94) is fixedly connected to the outer surface of the collection pipeline (7), and the left sides of the No. 1 sealing sleeve (92) and the No. 2 sealing sleeve (93) are both slidably connected to the inner wall of the pipeline sealing box (8).

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