Cable tunnel gas monitoring device

Abstract

The utility model relates to the technical field of gas monitoring equipment, and particularly discloses a cable tunnel gas monitoring device which comprises a support structure, a combustible gas concentration monitor, a cleaning roller and a filtering outer barrel. A driving motor for driving the filtering outer barrel to rotate is fixedly arranged at the top of the cylinder. According to the technical scheme of the utility model, the combustible gas concentration monitor is covered with the filtering outer cylinder body, so that the situation that dust in a cable tunnel is gathered at a probe of the combustible gas concentration monitor to cause abnormal detection data can be avoided; and a driving motor is regularly controlled to rotate a filtering outer barrel, and a cleaning roller and a spray head are matched to perform back flushing and brushing on the blocked filtering screen, so that the filtering screen realizes a regular cleaning effect, and the combustible gas concentration monitor is ensured to perform normal monitoring work on the combustible gas concentration of the cable tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of gas monitoring equipment, in particular to a cable tunnel gas monitoring device. Background Art

[0002] Cable tunnels are passages for storing cables. Due to the volatilization of cable insulation materials, lubricants, sealants and other substances, as well as the decomposition products of the cable's own insulation materials under high temperature or aging conditions, there will be some flammable gases inside the cable tunnel, mainly some volatile organic compounds related to cables and equipment, such as methane, ethane, propane, etc. When the flammable gas reaches a certain concentration, if electric sparks are generated in the cable tunnel, it will cause deflagration and explosion accidents. Therefore, it is necessary to set up gas monitoring equipment inside the cable tunnel. Since the gas monitoring equipment is monitored through sensor probes, the dust carried by the airflow inside the tunnel is easily accumulated at the probe, resulting in data judgment errors in the gas monitoring equipment. If manual maintenance is carried out in the cable tunnel regularly, the workload of manual maintenance of the gas monitoring equipment is large and there are safety hazards. Therefore, we propose a cable tunnel gas monitoring device. Utility Model Content

[0003] The utility model aims to provide a cable tunnel gas monitoring device, which can remotely clean the filter screen outside the sensor probe to replace manual cleaning, thereby solving the problems raised in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cable tunnel gas monitoring device, comprising a support structure, a combustible gas concentration monitor, a cleaning roller and a filter outer cylinder, the support structure comprising a round base, a cylinder is fixedly arranged at the center of the top of the round base, a driving motor for driving the filter outer cylinder to rotate is fixedly arranged on the top of the cylinder, four partitions of the same size are arranged around the outside of the cylinder, and a mounting platform is fixedly arranged between two adjacent partitions, the mounting platform comprises a mounting platform 1 and a mounting platform 2, two mounting platforms 1 arranged opposite to each other front and back are fixedly arranged with a combustible gas concentration monitor, two mounting platforms 2 arranged opposite to each other left and right are each provided with a cleaning roller, each cleaning roller is provided with a nozzle for spraying and cleaning the filter outer cylinder on both sides, the filter outer cylinder is sleeved on the outside of the round base, and four filter screens of the same size are arranged around the outside of the filter outer cylinder.

[0005] As a preferred implementation of the technical solution of the present application, the cleaning roller is coaxially connected to the power motor through a coupling, the power motor is fixed to the surface of the mounting seat by bolts, and the mounting seat is fixed to the side of the mounting platform 2 away from the cylinder.

[0006] As a preferred implementation of the technical solution of the present application, two installation platforms 1 arranged opposite to each other in the front and rear are each provided with a plurality of through holes, a ventilation groove is provided in the middle of the cylinder, and the opening direction of the ventilation groove is toward the installation platform 1.

[0007] As a preferred implementation of the technical solution of the present application, a flange is fixedly provided on the motor shaft of the driving motor, and the flange is fixedly connected to the center position of the top of the filter outer cylinder by bolts.

[0008] As a preferred implementation of the technical solution of the present application, a brush strip is provided on the outer wall of the cleaning roller, and the brush strip of the cleaning roller is in close contact with the inner wall of the filter outer cylinder.

[0009] As a preferred implementation of the technical solution of the present application, the outer vertical surface of the partition is vertically aligned with the circumferential end surface of the circular base, and the diameter of the inner cavity of the filter outer cylinder is 5 mm larger than the diameter of the circular base.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] The technical solution of the present application covers the outside of the combustible gas concentration monitor with a filter outer cylinder to prevent dust in the cable tunnel from accumulating at the probe of the combustible gas concentration monitor and causing abnormal detection data. The filter outer cylinder is rotated by regular control of the drive motor and the cleaning roller and nozzle are used to backwash and scrub the clogged filter screen, so that the filter screen can be cleaned regularly, thereby ensuring that the combustible gas concentration monitor can perform normal monitoring of the combustible gas concentration in the cable tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 It is a schematic diagram of the assembly of the support structure, cleaning roller and combustible gas concentration monitor of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the filter outer cylinder of the utility model;

[0015] Figure 3 It is a top view of a cable tunnel gas monitoring device of the utility model.

[0016] In the figure: 1. round base; 2. mounting platform 1; 3. combustible gas concentration monitor; 4. partition; 5. mounting seat; 6. cleaning roller; 7. power motor; 8. nozzle; 9. drive motor; 10. flange; 11. cylinder; 12. ventilation slot; 13. filter outer cylinder; 14. mounting platform 2; 15. filter screen. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Embodiment 1, as Figure 1-3 As shown, the utility model provides a technical solution: a cable tunnel gas monitoring device, comprising a support structure, a combustible gas concentration monitor 3, a cleaning roller 6 and a filter outer cylinder 13, the support structure comprising a round base 1, a cylinder 11 is fixedly arranged at the center of the top of the round base 1, a driving motor 9 for driving the filter outer cylinder 13 to rotate is fixedly arranged on the top of the cylinder 11, four partitions 4 of the same size are arranged around the outside of the cylinder 11, and a mounting platform is fixedly arranged between two adjacent partitions 4, the mounting platform comprises a mounting platform 1 2 and a mounting platform 2 14, two mounting platforms 1 2 arranged opposite to each other in the front and back are fixedly arranged with a combustible gas concentration monitor 3, two mounting platforms 2 14 arranged opposite to each other in the left and right are arranged with a cleaning roller 6, each cleaning roller 6 is provided with a nozzle 8 for spraying and cleaning the filter outer cylinder 13 on both sides, the filter outer cylinder 13 is sleeved on the outside of the round base 1, and four filter screens 15 of the same size are arranged around the outside of the filter outer cylinder 13;

[0019] The cleaning roller 6 is coaxially connected to the power motor 7 through a coupling, the power motor 7 is fixed to the surface of the mounting seat 5 by bolts, the mounting seat 5 is fixed to the side of the mounting platform 14 away from the cylinder 11, and the motor shaft of the drive motor 9 is fixed with a flange 10, and the flange 10 is fixedly connected to the top center position of the filter outer cylinder 13 by bolts.

[0020] In a specific embodiment of the present invention, the drive motor 9 and the power motor 7 are both controlled by independent controllers (not shown in the figure) to start and stop, and the controller (not shown in the figure) is manually controlled. The nozzle 8 is connected to the water source by a pipeline, and the nozzle 8 and the water source are controlled by a solenoid valve (not shown in the figure) to control whether to spray water. The aperture of the filter screen 15 is 1mm, which accommodates airflow and prevents large particles of dust from entering the filter outer cylinder 13 and contacting the probe of the combustible gas concentration monitor 3. The combustible gas concentration monitor 3 is composed of a combustible gas concentration detection sensor, a control The combustible gas concentration detection sensor adopts an infrared sensor, which determines the gas concentration by detecting the characteristics of gas molecules absorbing infrared light. It has good detection capabilities for combustible gases such as methane, ethane and propane. The power supplies of the drive motor 9, the power motor 7 and the combustible gas concentration monitor 3 are all connected to the power line in the cable tunnel through wires. The combustible gas concentration monitor 3 and the ventilation slots 12 are consistent with the direction of gas flow in the cable tunnel, ensuring that the combustible gas concentration monitor 3 can timely monitor the changes in gas concentration in the cable tunnel.

[0021] In the preferred technical solution, two installation platforms 2 arranged opposite to each other in the front and rear are each provided with a plurality of through holes, a ventilation slot 12 is provided in the middle of the cylinder 11, and the opening direction of the ventilation slot 12 is toward the installation platform 2. The ventilation slot 12 is consistent with the direction of gas flow in the cable tunnel, thereby ensuring that the combustible gas concentration monitor 3 can timely monitor the changes in gas concentration in the cable tunnel.

[0022] In the preferred technical solution, a brush strip is provided on the outer wall of the cleaning roller 6. The brush strip of the cleaning roller 6 is in close contact with the inner wall of the filter outer cylinder 13. The brush strip can extend into the filter screen 15. The rotating cleaning roller 6 can brush and clean the blocked filter screen 15.

[0023] In the preferred technical solution, the outer vertical surface of the partition 4 is vertically aligned with the circumferential end surface of the circular base 1, and the diameter of the inner cavity of the filter outer cylinder 13 is 5 mm larger than the diameter of the circular base 1. Setting such a size can ensure that the filter outer cylinder 13 can rotate on the circumference of the circular base 1, while ensuring that the partition 4 is as close to the inner wall of the filter outer cylinder 13 as possible.

[0024] Working principle: the two filter screens 15 in front and behind the filter outer cylinder 13 are aligned with the combustible gas concentration monitor 3 respectively, and the two filter screens 15 on the left and right of the filter outer cylinder 13 are aligned with the cleaning roller 6 respectively. The two combustible gas concentration monitors 3 can monitor the combustible gas concentration in the cable tunnel at the same time, and the values ​​monitored by the combustible gas concentration monitor 3 can be transmitted to the monitoring equipment of the cable tunnel manager through the data line for real-time display. Due to the dust particles inside the cable tunnel, the filter screen 15 will be gradually blocked. The drive motor 9 can be turned on regularly (once a week) to drive the filter outer cylinder 13 to rotate 90°, and the power motor 7 can be turned on to drive the cleaning roller 6 to rotate and open the solenoid valve connected to the nozzle 8, so as to brush and backwash the blocked filter screen 15, so as to regularly clean the blocked filter screen 15 of the filter outer cylinder 13, so as to ensure that the combustible gas concentration monitor 3 can timely monitor the changes in gas concentration in the cable tunnel. After the blocked filter screen 15 is cleaned, the solenoid valve connected to the power motor 7 and the nozzle 8 needs to be closed in time to avoid waste of electric energy and water energy.

Claims

1. A cable tunnel gas monitoring device, characterized in that: The invention comprises a support structure, a combustible gas concentration monitor (3), a cleaning roller (6) and a filter outer cylinder (13), wherein the support structure comprises a round base (1), a round column (11) is fixedly arranged at the center of the top of the round base (1), a driving motor (9) for driving the filter outer cylinder (13) to rotate is fixedly arranged at the top of the round column (11), four partitions (4) of the same size are arranged around the outside of the round column (11), and a mounting platform is fixedly arranged between two adjacent partitions (4), and the mounting platform comprises mounting platform one (2) and an installation platform 2 (14), the two installation platforms 1 (2) arranged opposite to each other in the front and back are each fixedly provided with a combustible gas concentration monitor (3), the two installation platforms 2 (14) arranged opposite to each other in the left and right are each provided with a cleaning roller (6), each of the cleaning rollers (6) is provided with a nozzle (8) on both sides for spraying and cleaning the filter outer cylinder (13), the filter outer cylinder (13) is sleeved on the outside of the round base (1), and four filter screens (15) of the same size are arranged around the outside of the filter outer cylinder (13).

2. A cable tunnel gas monitoring device according to claim 1, characterized in that: The cleaning roller (6) is coaxially connected to the power motor (7) via a coupling; the power motor (7) is fixed to the surface of the mounting seat (5) via bolts; and the mounting seat (5) is fixed to a side of the second mounting platform (14) that is away from the cylinder (11).

3. A cable tunnel gas monitoring device according to claim 1, characterized in that: The two mounting platforms (2) arranged front and back opposite to each other are each provided with a plurality of through holes, a ventilation slot (12) is provided in the middle of the cylinder (11), and the opening direction of the ventilation slot (12) faces the mounting platform (2).

4. A cable tunnel gas monitoring device according to claim 1, characterized in that: A flange (10) is fixedly provided on the motor shaft of the driving motor (9), and the flange (10) is fixedly connected to the top center position of the filter outer cylinder (13) by means of bolts.

5. A cable tunnel gas monitoring device according to claim 1, characterized in that: The outer wall of the cleaning roller (6) is provided with a brush strip, and the brush strip of the cleaning roller (6) is in close contact with the inner wall of the filter outer cylinder (13).

6. A cable tunnel gas monitoring device according to claim 1, characterized in that: The outer vertical surface of the partition (4) is vertically aligned with the circumferential end surface of the circular base (1), and the diameter of the inner cavity of the filtering outer cylinder (13) is 5 mm larger than the diameter of the circular base (1).

Images