PENDULUM FIXING DEVICE FOR MEASURING WASTE IN STORMWATER AND SEWERAGE NETWORK OUTLETS

Abstract

The invention relates to a fixing device (100) for measuring waste in stormwater and sewer network outlets, comprising a sensor (110), characterized in that said sensor (110) is fixed in a pendulum fashion to an element (120) of the network opening onto the roadway. Figure 2 for the abbreviation.

Description

Title of the invention: PENDULUM FIXING DEVICE FOR MEASURING WASTE IN OUTLETS OF THE STORMWATER AND SEWER SYSTEMS technical field

[0001] The present invention relates to the field of measuring waste in the stormwater network or effluent levels in the sewage network.

[0002] The present invention relates more particularly to a pendulum fixing device for measuring waste in the stormwater network or effluent levels in the sewage network. Previous technique

[0003] For several years, sensors have been installed to detect waste in the storm sewer system or effluent levels in the wastewater system. These sensors are positioned on an inlet of the storm sewer or wastewater system. This inlet is generally called a catch basin in the storm sewer system or an inspection chamber in the wastewater system. Access to the inspection chamber is via a generally circular opening called a manhole.

[0004] In the prior art, these sensors are positioned with a bracket, possibly retractable.

[0005] The solutions in the prior art have the following disadvantages: - The simple bracket is not retractable. - The fixing of the square may undergo possible loosening or thinning over time which results in a loss of the aiming point. - The retractable bracket has a high cost that is incompatible with the economic model. - Installing a bracket generally requires entering the manhole. - Precise positioning of the sensor sight is difficult using a square. Description of the invention

[0006] The invention aims to remedy the disadvantages of the prior art by proposing a solution guaranteeing operational performance with a moderate installation cost.

[0007] To this end, the invention relates to a fixing device for measuring waste in emergences of the stormwater and sewage network, comprising a sensor, in which said sensor is fixed in a pendulum fashion to an element of the network opening onto the roadway.

[0008] According to one embodiment, said sensor comprises a hook connected to a retractable attachment, itself connected to a canopy by a pin.

[0009] According to one embodiment, a flexible connecting element is positioned between said hook and said retractable fastener.

[0010] According to a particular embodiment, this flexible connecting element is an O-ring.

[0011] According to one embodiment, said retractable attachment is a carabiner.

[0012] According to one embodiment, the sensor is connected by a cord to two hooks, themselves- same connected to a network inspection point by two pitons.

[0013] According to one embodiment, the rope is a high-strength type rope.

[0014] According to one embodiment, the two hooks are self-locking type hooks jammer.

[0015] According to one embodiment, the two pins are made of stainless steel. Brief description of the drawings

[0016] [Fig-1] The [Fig.1] is an overview of a view of a drain.

[0017] [Fig.2] Fig.2 represents the device according to the invention, in a first mode of realization.

[0018] [Fig.3] Fig.3 illustrates the pendulum effect.

[0019] [Fig.4] Fig.4 represents the device according to the invention, in a second embodiment. Detailed description

[0020] Fig. 1 is an overview of a drain opening.

[0021] Figure [Fig.1] shows a sensor 110 connected to a canopy 120.

[0022] Figure [Fig. 1] also shows a manhole cover 115, as well as some waste 125.

[0023] Sensor 120 measures the level of waste present at the bottom of the drain.

[0024] The present invention relates to a fastening device 100 for measuring of waste in emergences of the stormwater and sanitation network, including a 110 sensor.

[0025] The sensor 110 is fixed in a pendulum fashion to an element 120 of the network leading onto the roadway.

[0026] In a first embodiment, the sensor 110 includes a hook 130 connected to a retractable fastener 140, itself connected to a canopy 120 by a pin 150.

[0027] Fig. 2 represents the device according to the invention, in this first embodiment.

[0028] We observe on [Fig.2] the marquise 120 which is pierced in order to position the pin 150.

[0029] We also observe on [Fig.2] the sensor 110 which has a hook 130, thus allowing the pendulum attachment.

[0030] Thanks to the device according to the invention, the sensor is automatically positioned vertically.

[0031] We also observe on [Fig.2] a retractable attachment 140, allowing the sensor 110 to be connected to the pin 150.

[0032] It should be noted that the fixing point is not necessarily a screw on a perforated canopy. It can also be any other fixed point, such as a bracket.

[0033] According to one variant, a flexible connecting element is positioned between said hook 130 and said retractable fastener 140.

[0034] According to a particular embodiment, this flexible connecting element is an O-ring.

[0035] According to one variant, the retractable attachment 140 is a carabiner. It can also be a split ring.

[0036] The advantages obtained through this first embodiment are as follows: - Economical solution in terms of materials. - Simple installation solution. - A solution that guarantees a high level of safety for the installer who must avoid entering the inspection chamber to avoid potential H2S emissions. - Solution which guarantees good aiming of the bottom of the drain or channel for efficient metrology. - A solution that is retractable with identical repositioning to allow for network cleaning interventions.

[0037] Fig. 3 illustrates the pendulum effect, and in particular the mechanical design constraint of the housing to ensure the desired pendulum effect: the center of gravity and the fixing point of the housing are defined so that the axis of the sensor makes an angle of 90° in X and Y.

[0038] In a second embodiment, the sensor 110 is connected by a rope 171 to two hooks 181, 182, themselves connected to a manhole 120 of the network by two spikes 191, 192.

[0039] Figure 4 represents the device according to the invention, in this second embodiment.

[0040] We observe in [Fig.4] the sensor 110, which is connected by a cord 171 to two hooks 181 and 182.

[0041] These hooks 181 and 182 are connected to a manhole 120 of the network by two pins 191 and 192.

[0042] According to one variant, rope 171 is a high-strength type rope.

[0043] By way of example, this rope can have a breaking strength of more than six tons. An example of a design type of this rope is as follows: a long-pitch braided Technora (registered trademark) aramid core under polyurethane film, with a finely woven sheath of high-tenacity black polyester, and with a working load elongation of less than 0.5%.

[0044] According to one variant, the two hooks 181, 182 are self-locking type hooks.

[0045] According to one variant, the two pins 191, 192 are made of stainless steel. By way of example, these pins may have a diameter of six millimeters.

[0046] The advantages obtained through this second embodiment are as follows: - There is no need to enter the manhole. This solution therefore offers increased security. - Very few tools are needed. - Installation time is short (approximately fifteen minutes). - Positioning is easy. - The device is removable for cleaning operations.

Claims

Demands

1. Fixing device (100) for measuring waste in stormwater and sewage network emergences, comprising a sensor (110), characterized in that it comprises a pendulum fixing means and a network element (120), said sensor (110) being fixed in a pendulum fashion to the network element (120) opening onto the roadway, in that the network element (120) is a canopy (120), and in that it comprises a hook (130), a retractable fastener (140) and a pin (150), said hook (130) being connected to the retractable fastener (140), itself connected to the canopy (120) by the pin (150).

2. A fastening device (100) according to claim 1, characterized in that it comprises a flexible connecting element, said flexible connecting element being positioned between said hook (130) and said retractable fastener (140).

3. A fastening device (100) according to claim 2, characterized in that said flexible connecting element is an O-ring.

4. Fastening device according to claim 1, 2 or 3, characterized in that said retractable attachment (140) is a carabiner.

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