SU1124090A1 - Drainage head - Google Patents

Abstract

1. DRAIN EQUIPMENT, including a wellhead pipe that mates with a drainage pipe and a removable tubular insert installed in it, characterized in that, in order to speed up the start of drainage operation in the spring and reduce the labor intensity of the mouth, the tubular insert is made as separate sections of conductive material, installed with mutual clearance, each section; Qi is equipped with a retainer (its position in the well pipe "with a contact for connecting the lead wire. lib D

Description

2. The aperture according to Claim. 1, characterized in that the clamp of the position of the section is made in the form of a clamping clamp.

The invention relates to agricultural land reclamation and can be used in the drainage of wetlands by closed drainage under the conditions of seasonal negative temperatures.

A drainage-wellhead is known, which is a wellhead pipe associated with a drainage pipeline and fortified in the slope of an open water intake lj.

The disadvantage of this wellhead is the difficulty of removing an ice plug from the well pipe, which is formed in winter and in the early spring period blocks off the drainage outlet and the collector or single drain into the open water intake. For this reason, the drainage of groundwater from the drained area is delayed, which leads to a later (up to 2-3 not | Del) start of field work, and in case the area is occupied by winter crops or perennial grasses, soaking crops. In both cases, yield losses occur.

In addition, when water enters the drainage network with a plugged mouth, water may leak through the drainage bed next to the well pipe, causing scour formation and canap slope damage and the mouth.

A drainage wellhead is known, including a wellhead pipe associated with the drainage pipe and a removable tubular insert 2 installed therein.

However, even in this construction, the release of the mouth from the ice plug is very difficult. This is because water freezes not only in the insert, but also in the gap between the insert and the wellhead pipe. GTrimenenie large efforts and strong blows when removing the insert matched with the risk of damage to parts

therefore, the insert with the ice plug in it is usually removed from the well pipe, not at the optimum time (when the air temperature is positive), but after melting the ice in the gap between the insert and the well pipe, i.e. with a delay of several days which also leads to some delay in the start of field work. Removing the ice plug from the removed insert is also a difficult task, since, due to local surface irregularities and an uneven cross-section along the length of the insert, the plug may become jammed and must be knocked out by heating using, for example, a pale lamp or defrosting. on air.

Thus, the well-known design does not solve the problem of the timely commissioning of the drainage system No. 1 at an optimum time, and the maintenance of the mouth is very laborious. At the same time, work to remove ice plugs should be carried out during the period when the service personnel is loaded with other works for the maintenance of the reclamation network.

The purpose of the invention is to accelerate the start of drainage work in the spring period and reduce the labor intensity of servicing the mouth.

This goal is achieved by the fact that in the drainage mouth of the tubular insert is made in the form of separate sections of electrically conductive material installed with a mutual gap, each section is provided with a retainer for its position in the wellhead pipe and a contact for connecting the lead wire.

The clamp of the position of the section is made in the form of a spring clamp.

The proposed design allows the tubular insert to be electrically heated and the drainage mouth is easily freed from the ice plug. FIG. 1 shows a drainage mouth, a general view; in fig. 2 is a view along arrow A in FIG. G, FIG. 3 - times cut BB in FIG. 1, The drainage aperture is a wellhead pipe 1 coupled to a drainage pipe 2 (collector or single drain) and fixed in the slope of the channel 3. Inside the pipe 1 a removable tubular insert is installed, consisting of separate conductive sections 4, for example metal, the shape of which corresponds to the cavity of the pipe 1. Each section is equipped with springs and a clamp 5, which serves simultaneously to fix its position relative to the pipe 1 and to connect a lead-through wire (not shown). In the assembled state, the gap between adjacent sections is 5-10 mm. Section length 4. is chosen such that their ends facing the pipeline 2 are outside the freezing zone of water, and the number of sections depends on the diameter of the wellhead pipe and on the type of source of electrical current. For example, when using constant or single-phase alternating current, an even number of sections is required, and when using three-phase multiples of three (the drawing shows a tubular insert consisting of two sections). When the drainage is working, the drain from the collector or pipeline 2 through the drain pipe 1 with the tubular section 4 enters channel 3. With the onset of negative air temperatures, but before the soil freezes, the drainage still continues to work. The water entering the wellhead freezes, starting from the open end of the well pipe, and gradually forms an ice plug in the pipe section 4, which blocks the outlet from the wellhead, after which the drainage stops the water from flowing out. The water filling the gap between the wellhead pipe 1 and section 4 also freezes. In the early spring period, the mouth free the trail. For this purpose, wires from the current source are connected to the spring clips 5 and switch on. Here, sections 4 serve as electrodes which are closed by a conductive ice plug and are heated by the current flowing through them. The ice on their surface melts and they are easily removed from the well pipe with or without an ice plug. The latter is also easily removed. After clearing the ice plug, section 4 is installed at the mouth or, for better corrosion protection, is collected in a vehicle and then stored in the warehouse, and in the autumn it is installed again at the mouth. As a current source, you can use starter batteries installed on a car or a tractor, a generator of a mobile welding unit, and other mobile power sources. The possibility of electrically heating the tubular insert makes it possible to free the mouth from the ice plug without waiting for it to melt, i.e. a few days earlier include in ra-. bot drainage network, resulting in increased yields in the drained area. In addition, the removal of ice plugs from the mouth can be performed in advance in the early spring period, when mass work is not being done to maintain the amelioration systems, and thereby reduce the peak load of the service personnel (channel repairmen).

Claims (2)

1. DRAINAGE MOUTH, including a wellhead pipe connected to a drainage pipe and a removable tubular insert installed therein, characterized in that, in order to accelerate the start of drainage in the spring and reduce the complexity of the mouth, the tubular insert is made in the form of separate sections of electrically conductive material , installed with a mutual gap, and each section: is equipped with a latch for its position in the wellhead pipe and a contact for connecting the current-carrying wire. . .1 1 124090 2. Aperture according to π. 1, different. so that the polo latch. section is made in the form of a spring clip.