CN115807767B - Safety device for deep well pump cable protection and water level protection - Google Patents

Abstract

The invention relates to the field of well pump safety, in particular to a safety device for protecting a cable and protecting a water level of a deep well pump, which comprises a pump pipe, a flange plate, a fixing mechanism and a protection mechanism, wherein the pump pipe is used for guiding liquid in the well out of the well through a tubular passage according to power provided by the deep well pump, the pump pipe is sequentially connected with the head and the tail of the pump pipe through bolts to form the tubular passage, the fixing mechanism comprises a cable clamping groove and a cable buckle and is used for determining the installation position and the installation mode of the cable, the protection mechanism comprises a hollow hinge, a cable cover plate and a protection sleeve, the cable cover plate is used for realizing opening and closing operations of the cable cover plate through rotation, and the water level measurement mechanism is used for determining the installation position of the water level measurement mechanism and is respectively connected with the protection mechanism and the deep well pump and is used for measuring the real-time water level in the well. The invention can realize the effects of comprehensive protection of cable safety and water level safety through the cooperation of the components.

Description

Safety device for deep well pump cable protection and water level protection

technical field

The invention relates to the field of well pump safety, in particular to a safety device for deep well pump cable protection and water level protection.

Background technique

When the deep well pump is working, it needs to be soaked in geothermal water, so that the deep well pump cable is exposed to high temperature geothermal water for a long time. After long-term immersion, the insulation layer on the cable surface will accelerate aging and cracks will appear, shortening its life. Generally, the water level of a well needs more than 20 sections of well pipe to ensure that the water level matches the water flow rate. Usually, the deep well pump is connected to the well pipe and installed at the bottom of the well pipe. The deep well pump cable is bound along the well pipe. Leading up, it has to pass through more than 20 flange joints. Since the well pipe flange is much larger than the well pipe diameter, and the cable has to pass through the outer periphery of the flange, when the deep well pump goes down the well, it is often connected with the Well wall friction, or due to improper operation of the staff, the cable is easily damaged by mechanical force, resulting in damage to the cable of the deep well pump.

The patent document with the publication number CN101257199A discloses a cable fixing and protection method for deep well pumps. In this method, a casing is arranged outside the cable of the deep well pump, and the upper part of the casing is connected to the well pipe through a casing limiting device and a casing sealing device. , The cable is isolated from the external environment through the sleeve, so as to realize the protection of the deep well pump cable.

However, due to the particularity of the working position of the deep well pump, the length of the cable required is very long, and the cable rotates uncontrollably and freely during the process of entering the well with the pump pipe. The too long cable is not easy to install and disassemble, and the vibration during the working process will cause the cable to break. As a result, the deep well pump needs to be re-lifted out of the well equipment, resulting in repeated labor or even a safety accident caused by electric leakage. As the deep well pump goes deeper and deeper, the cable becomes heavier due to its own weight, and the cable's own gravity will also affect the strength of the cable itself. It will cause continuous impact, so that the wellhead lowering cable operator cannot effectively straighten the cable in the well, which will cause the cable in the well to occupy the entire space in the well in disorder, and the water level measuring instrument cannot be effectively lowered or the probe of the measuring instrument is blocked or clamped by the disordered cable , a safety accident occurred. Due to the special working environment of the deep well pump, the wellhead is fully closed to prevent falling objects during normal operation. The closed wellhead cannot be used for water level observation. It is impossible to form observation data of system water volume and water level, and the water level may drop too much. When the pump is lost and burned quickly, a safety accident occurs. This method cannot stably fix the cable and realize the comprehensive protection of cable safety and water level safety.

Contents of the invention

For this reason, the present invention provides a safety device for deep well pump cable protection and water level protection, which can solve the problem that the cable cannot be stably fixed and realize comprehensive protection of cable safety and water level safety.

In order to achieve the above object, the present invention provides a safety device for deep well pump cable protection and water level protection, including:

The pump pipe is connected with the deep well pump, and is used to export the liquid in the well to the outside of the well through the tubular passage according to the power provided by the deep well pump;

Flanges are arranged at both ends of the pump pipe, and the center of the flange is provided with a through hole equal to the diameter of the pump pipe. The flange is provided with threaded through holes on an equidistant circle based on the axis to pass through bolts. connecting several pump tubes end to end in order to form a tubular passage, and to determine the installation positions of the fixing mechanism and the protection mechanism;

The fixing mechanism, the fixing mechanism includes a cable clip groove and a cable clip, the cable clip groove is respectively connected with the flange plate and the cable clip, to determine the installation position and installation method of the cable, and to determine the installation position and installation method according to the The cable is fixed by its own gravity;

The protection mechanism includes a hollow hinge, a cable cover and a protective sleeve, the hollow hinge is respectively connected to the cable cover, the protective sleeve and the flange, the cable cover is connected to the protective sleeve, and the protective sleeve is connected to the The flange is connected, the protective sleeve completely covers the pump tube and the fixing mechanism to prevent the cable from contacting the liquid in the well, and the hollow hinge is used to realize the opening and closing operation of the cable cover through rotation , and, to determine the installation location of the water level measuring mechanism;

The water level measuring mechanism is respectively connected with the protection mechanism and the deep well pump to measure the real-time water level in the well.

Further, the pump pipe includes a first pump pipe and several second pump pipes, and the first pump pipe and the second pump pipe are arranged vertically to the ground;

One end of the first pump pipe is connected to the water outlet of the deep well pump, and the other end is connected to the second pump pipe for introducing the liquid in the well into the second pump pipe;

A plurality of the second pump pipes are sequentially connected end to end to form a tubular passage for leading the liquid in the well out of the well.

Further, a first positioning hole, a second positioning hole, a third positioning hole and a fourth positioning hole are equidistantly arranged on the upper surface of the flange according to the first track, the second track, the third track and the fourth track. hole, the second positioning hole and the third positioning hole together form a positioning hole array, the positioning hole array is used to determine the installation position of the fixing mechanism, the fourth positioning hole is used to determine the installation position of the protection mechanism, and the cross-sectional diameter of the cable Set as D0, set the diameter of the flange as the first diameter D1;

The first trajectory is a circle with the distance from the center of the through hole of the flange (1/2)×D1-(1/4)×D2 as the center and D2 as the diameter, and is connected to the upper surface of the flange For coincident trajectories, set D2 as the second diameter, where D2=3×D0;

The second trajectory is based on the edge path of the upper surface of the flange, and the first trajectory is moved counterclockwise by an angle of 2ɑ and then coincides with the upper surface of the flange, wherein

;

The third trajectory is based on the edge path of the upper surface of the flange, and the first trajectory is moved counterclockwise by an angle of 4ɑ to coincide with the upper surface of the flange;

The fourth trajectory is based on the edge path of the upper surface of the flange, and the first trajectory is moved by an angle of 6ɑ in the counterclockwise direction to coincide with the upper surface of the flange;

The flange is provided with a first positioning hole, a second positioning hole, a third positioning hole and a fourth positioning hole, and the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole are equidistantly distributed , the first positioning hole, the second positioning hole and the third positioning hole are jointly used to locate the installation position of the fixing mechanism, and the fourth positioning hole is used to locate the protection mechanism;

The first positioning hole is a through hole opened along the first track on the upper surface of the flange, and is used to co-locate the fixing mechanism with the second positioning hole and the third positioning hole;

The second positioning hole is a through hole opened along the second track on the upper surface of the flange, and is used for co-locating the fixing mechanism with the first positioning hole and the third positioning hole;

The third positioning hole is a through hole opened along the third track on the upper surface of the flange, and is used to co-locate the fixing mechanism with the first positioning hole and the second positioning hole;

The fourth positioning hole is a through hole opened along the fourth track on the upper surface of the flange for positioning the protection mechanism.

Further, the lower surface of the flange is equidistantly provided with a first matching groove, a second matching groove and a third matching groove according to the fifth track, the sixth track and the seventh track, and the first matching groove, the second matching groove and the second matching groove The three matching grooves jointly form a matching groove array, and the matching groove array is used to form a clearance fit between the two flanges, and the thickness of the flanges is set to a first depth H1;

The fifth trajectory is that the lower surface of the flange is based on the center of the first trajectory, and the vertical projection of the first trajectory on the lower surface of the flange is shifted outward (1/3 )×D2 and the trajectory coincident with the lower surface of the flange;

The sixth trajectory is that the lower surface of the flange is based on the center of the second trajectory, and the vertical projection of the first trajectory on the lower surface of the flange is shifted outward (1/3 )×D2 and the trajectory coincident with the lower surface of the flange;

The seventh trajectory is that the lower surface of the flange is based on the center of the third trajectory, and the vertical projection of the first trajectory on the lower surface of the flange is shifted outward (1/3 )×D2 and the trajectory coincident with the lower surface of the flange;

The lower surface of the flange is provided with a first fitting groove, a second fitting groove and a third fitting groove, the first fitting groove, the second fitting groove and the third fitting groove are equidistantly distributed, the first fitting groove, the second fitting groove The groove and the third matching groove are used together to form a clearance fit with the fixing mechanism;

The first matching groove is a blind hole with a depth of H2 opened on the lower surface of the flange along the fifth track, and is used to cooperate with the second matching groove and the third matching groove to cooperate with the fixing mechanism To form a clearance fit, set the diameter of the first fitting groove as the third diameter D3, where D3=(4/3)×D2, and set H2 as the second depth, where H2=(1/4)×H1;

The second matching groove is a blind hole with a depth of H2 opened on the lower surface of the flange along the sixth track, and is used to cooperate with the first matching groove and the third matching groove to cooperate with the fixing mechanism form a clearance fit;

The third matching groove is a blind hole with a depth of H2 opened on the lower surface of the flange along the seventh track, and is used to cooperate with the first matching groove and the second matching groove to cooperate with the fixing mechanism Create a clearance fit.

Further, the cable clamping groove is a rigid member, and the cable clamping groove includes a first cable clamping groove, a second cable clamping groove and a third cable clamping groove, and the first cable clamping groove is connected with the first positioning hole and the third cable clamping groove respectively. The first matching groove is connected to locate the first cable, the second cable locking groove is respectively connected to the second positioning hole and the second matching groove to locate the second cable, and the third cable locking groove is respectively connected to the second positioning hole and the second matching groove. connected with the third positioning hole and the third matching groove, for positioning the third cable;

The cable buckle is a flexible member. The cable buckle includes a first cable buckle, a second cable buckle and a third cable buckle. The first cable buckle is connected to the first cable buckle for The first cable is fixed, the second cable buckle is connected with the second cable slot for fixing the second cable, and the third cable buckle is connected with the third cable slot for fixing the Describe the third cable.

Further, the first cable slot, the second cable slot and the third cable slot are integrally formed by three parts: a stepped main body, a circular platform slot and a slot opening, and are not rigidly closed Ring-shaped non-standard parts;

The stepped main body is a non-standard part formed integrally with the first cylinder and the second cylinder coaxially;

The first cylinder is a cylindrical rigid body with a diameter of D4 and a height of the second depth H2, and the first cylinder is arranged on the upper surface of the flange to fix the position of the second cylinder , and, for clearance fit with the first fitting groove, the second fitting groove and the third fitting groove of another flange, D4 is set as a fourth diameter, and the fourth diameter D4=(9 /10)×D3;

The second cylinder is a cylindrical rigid body with a diameter of the second diameter D2 and a height of H3, and is arranged in the first positioning hole, the second positioning hole and the third positioning hole to carry Working pressure, set H3 as the third depth, the third depth H3=H1-H2;

The circular platform slot is arranged inside the first cylinder and the second cylinder, and the center of the upper surface of the first cylinder is used as the center and the second diameter D2 is used as the diameter to make a circle, and the obtained circle is The shape is set as the first circle, and the angle between the busbar of the slot and the vertical line is set as the first angle θ, and the first diameter D1, the first angle θ, the second depth H2 and the first angle The third depth H3 is calculated according to the formula D5=D2-2×tanθ×(H2+H3) to obtain the fifth diameter D5, taking the center of the lower surface of the second cylinder as the center and the fifth diameter D5 as the diameter to make a circle. The obtained circle is set as the second circle, and the circular table slot is obtained by cutting the first circle and the second circle according to the first included angle θ to the first cylinder and the second cylinder The circular frustum arc surface is used to fix and cooperate with the first cable buckle, the second cable buckle and the third cable buckle, and H2+H3 is set as the fourth depth H4;

The opening of the card slot is arranged on the first cylinder and the second cylinder, and a rectangular notch with the fourth diameter D4 as the length and the fourth depth H4 as the height is opened for laterally installing the The first cable buckle, the second cable buckle and the third cable buckle.

Further, the first cable buckle, the second cable buckle and the third cable buckle are integrally formed by three parts of a truncated cone-shaped main body, a cable through hole and a buckle opening, and are flexible and not closed. Ring-shaped non-standard parts;

The upper surface of the frustum-shaped main body is the first circle, the lower surface is the second circle, the angle between the busbar and the vertical line is the first angle θ of the flexible circular frustum member, and the circular frustum slot connection to carry the working pressure;

The cable through hole is arranged inside the frustum-shaped main body, and the center of the upper surface of the frustum-shaped main body is taken as the center and D6 is the diameter to make a circle, and the obtained circle is set as the third circle, and the cable through hole is According to the through hole formed on the frustum-shaped main body according to the third circle, in order to fix the first cable, the second cable and the third cable, D6 is set as the sixth diameter, and the sixth diameter D6 =(9/10)×D0;

The buckle opening is provided on the frustum-shaped main body, and a rectangular notch with L1 as the length and fourth depth H4 as the height is provided for laterally installing the first cable, the second cable and the first cable. Three cables, set L1 as the first length, and the first length L1=(1/2)×D0.

Further, the hollow hinge is connected to the fourth positioning hole, the diameter of the hollow hinge is equal to the second diameter D2, and the hollow hinge includes a first leaf, a second leaf and a hollow tube, Both the first leaf and the second leaf are arranged on the hollow tube;

The first leaf is fixedly connected to the protective sleeve for fixing the second leaf and the hollow tube;

The second sheet is connected to the cable cover and rotates freely around the axis of the hollow tube to realize the opening and closing operations of the cable cover;

The inner diameter of the hollow tube is D7, which is used to determine the installation position of the water level measuring mechanism. D7 is set as the seventh diameter, and the seventh diameter D7=(11/10)×D0;

The cable cover includes a rigid cover, a flexible spacer and a plug, and the flexible spacer is arranged inside the rigid cover;

The rigid cover is connected to the second sheet for opening and closing operations through the rotation of the second sheet;

The flexible pad is used to protect cables and reduce impact;

The bolt is arranged at the joint between the rigid cover plate and the protective sleeve, and is used to fix the rigid cover plate on the protective sleeve.

Further, the water level measurement mechanism includes a PE pipe, a pressure sensor and a calculation module, the pressure sensor is arranged at the bottom of the PE pipe, and the pressure sensor is connected to the calculation module;

The inner diameter of the PE pipe is set as the eighth diameter D8, which is numerically equal to the cable cross-sectional diameter D0, and the bottom of the PE pipe is parallel to the bottom of the deep well pump and communicated with the deep well pump to communicate with the real-time The water level is kept in sync;

The pressure sensor is used to detect the real-time pressure F of the water column in the PE pipe, and send the detected real-time pressure result to the calculation module;

The calculation module is used to calculate the real-time water level h of the well according to the real-time pressure results obtained from the pressure sensor.

Further, the calculation module is used to calculate the real-time water level h of the well according to the real-time pressure results obtained from the pressure sensor, wherein,

Substitute the eighth diameter D8, the density ρ of water, the acceleration of gravity g and the real-time pressure F into the formula

Calculate the size of the real-time water level h of the well.

Compared with the prior art, the beneficial effect of the present invention is that the working position of the deep well pump is in the well below the ground level, and correspondingly, cables of equal length are required to go down the well synchronously. The knot affects the working efficiency. On the other hand, due to its own gravity, it bears a large stress and thus accelerates the damage of the cable. The device uses the first positioning hole, the second positioning hole and the The third positioning hole determines the installation position of the cable, effectively avoiding the mutual interference between the cables, thereby ensuring the stable operation of the device, and the cable clamp groove and the cable clamp are used together to fix the cable on the flange plate. Distributing the gravity of the cable itself to each of the cable clamping grooves can solve the problem that the cables cannot be stably fixed and realize comprehensive protection of cable safety and water level safety.

In particular, the two sections of the pump pipe are provided with flanges, wherein one end of the first pump pipe is fixedly connected to the water outlet of the deep well pump through the bolt holes on the flange, and the other end is connected to the outlet of the deep well pump through the bolt holes on the flange. One end of the second pump tube is connected. In addition, several second pump tubes are fixedly connected end to end through the bolt holes on the flange to form a tubular passage, which ensures the tightness between the pump tubes and increases the reliability of the device. On the one hand, the multi-section design of the pump tube is convenient for disassembly and maintenance, which effectively saves the work cost. On the other hand, the design of the multi-section pump tube can also be adjusted according to different downhole environments and bottom depths, which is more flexible and convenient.

In particular, the trajectories of the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole are all unclosed circular arcs whose center is located in the flange. This unique The shape design of the cable determines that the installation method of the cable is a lateral extrusion installation rather than a traditional axial installation, and it is easier to install and disassemble when the cable is longer.

In particular, the setting of the first matching groove, the second matching groove and the third matching groove reduces mutual interference during the connection of the flanges so as to ensure that there is no gap in the connection between the pump tubes, ensuring Stability of device operation.

In particular, the upper surface of the frustum-shaped main body is the first circle, the lower surface is the second circle, the angle between the generatrix and the vertical line is the first angle θ of the flexible frustum member, and the frustum The clamping groove cooperates to fix the cable. The cable buckle is a flexible member that is squeezed and deformed by an external force. The sixth diameter D6 is smaller than the cable diameter D0, so that the cable buckle is clamped under the action of elastic force The relative sliding of the cable is reduced, and the cable drives the cable buckle to move downward under the action of its own gravity, and the cable buckle is clamped with the increase of gravity with its unique circular platform structure, so that the cable is in each pump tube Due to the automatic straightening under the action of its own gravity, it effectively avoids the interference and knotting of the cables during the working process, and distributes the gravity of the cables to each of the cable slots and cable buckles, reducing the stress on the cables , which not only increases the stability of the device, but also prolongs the service life of the cable and improves the safety of the equipment.

In particular, the use of hollow hinges can not only save materials, but also fix the water level measuring device, which further improves the safety of the device. The cable cover and the protective sleeve are connected through the hollow hinge to form a closed space, which not only protects It prevents the cable from being rubbed by underground sand and gravel, and realizes the separation of water and electricity to prevent leakage accidents. The flexible pad not only protects the cable from impact, but also helps the cable to be fixed by elastically clamping the cable itself, which further improves the stability of the device. .

In particular, the water level measuring mechanism of the present invention utilizes the principle of a connector to keep the liquid level in the PE pipe the same as the liquid level in the well at all times, and the real-time liquid level in the well can be obtained by calculating the real-time liquid level in the PE pipe It can effectively prevent the phenomenon of pump loss and burning when the water level drops too fast, which improves the reliability of the device and further ensures the safety of the device.

Description of drawings

Fig. 1 is the structural representation of the safety device of deep well pump cable protection and water level protection that the embodiment of the present invention provides;

Fig. 2 is a structural schematic diagram of the upper surface of the flange 1 of the deep well pump cable protection and water level protection safety device provided by the embodiment of the present invention;

Fig. 3 is a structural schematic diagram of the lower surface of the flange 1 of the deep well pump cable protection and water level protection safety device provided by the embodiment of the present invention;

Fig. 4 is a structural schematic diagram of the first cable clamping groove of the deep well pump cable protection and water level protection safety device provided by the embodiment of the present invention;

Fig. 5 is a structural sectional view of the first cable clamping groove of the deep well pump cable protection and water level protection safety device provided by the embodiment of the present invention;

Fig. 6 is a structural schematic diagram of the first cable buckle of the deep well pump cable protection and water level protection safety device provided by the embodiment of the present invention;

Fig. 7 is a structural sectional view of the first cable buckle of the deep well pump cable protection and water level protection safety device provided by the embodiment of the present invention;

Fig. 8 is a structural sectional view of the water level measuring mechanism of the deep well pump cable protection and water level protection safety device provided by the embodiment of the present invention;

In the figure: 1-flange, 2-threaded through hole, 3-hollow hinge, 4-protective sleeve, 5-cable cover, 6-first positioning hole, 7-second positioning hole, 8-the first Three positioning holes, 9-the fourth positioning hole, 10-the first matching groove, 11-the second matching groove, 12-the third matching groove, 13-the first cable slot, 14-the opening of the slot, 15-the first Cylinder, 16-second cylinder, 17-circular table slot, 18 first cable buckle, 19-buckle opening, 20-cable through hole, 21-PE pipe, 22-pressure sensor.

Detailed ways

In order to make the objects and advantages of the present invention clearer, the present invention will be further described below in conjunction with the examples; it should be understood that the specific examples described here are only used to explain the present invention, and are not intended to limit the present invention.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "inner", "outer" and other indicated directions or positional relationships are based on the terms shown in the accompanying drawings. The direction or positional relationship shown is only for convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In addition, it should be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a It is a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Please refer to Fig. 1-Fig. 3, a deep well pump cable protection and water level protection safety device provided by the embodiment of the present invention includes:

The pump pipe is connected with the deep well pump, and is used to export the water in the well to the outside of the well through the tubular passage according to the power provided by the deep well pump;

The flange 1 is arranged at both ends of the pump pipe, the center of the flange 1 is provided with a through hole equal to the diameter of the pump pipe, and the flange 1 is provided with a threaded through hole 2 on an equidistant circle based on the axis, It is used to sequentially connect several pump tubes end to end through bolts to form a tubular passage, and is used to determine the installation positions of the fixing mechanism and the protection mechanism;

The fixing mechanism, the fixing mechanism includes a cable slot and a cable buckle, the cable slot is connected to the flange 1 and the cable buckle respectively, to determine the installation position and installation method of the cable, and to Fix the cable according to its own gravity;

The protection mechanism includes a hollow hinge 3, a cable cover 5 and a protective sleeve 4, the hollow hinge 3 is respectively connected to the cable cover 5, the protective sleeve 4 and the flange 1, and the cable cover 5 is connected to the protective sleeve. The sleeve 4 is connected, and the protection sleeve 4 is connected with the flange 1. The protection sleeve 4 completely covers the pump tube and the fixing mechanism to prevent the cable from contacting the water in the well. The hollow hinge 3 It is used to realize the opening and closing operation of the cable cover plate 5 through rotation, and to determine the installation position of the water level measuring mechanism;

The water level measuring mechanism is respectively connected with the protection mechanism and the deep well pump to measure the real-time water level in the well.

Specifically, the working position of the deep well pump is in the well below the ground level, and correspondingly, cables of equal length are required to go down the well synchronously. The gravity bears a large stress to accelerate the damage of the cable. This device determines the installation position of the cable by setting it on the flange 1, effectively avoiding the mutual interference between the cables, thereby ensuring the stable operation of the device.

Specifically, the cable clamping groove and the cable buckle are used together to fix the cable on the flange 1 and distribute the weight of the cable itself to each of the cable clamping grooves, which can solve the problem that the cable cannot be fastened. Stable and fixed, realize the problem of comprehensive protection of cable safety and water level safety.

Specifically, the pump tube includes a first pump tube and several second pump tubes, and the first pump tube and the second pump tube are arranged vertically to the ground;

One end of the first pump pipe is connected to the water outlet of the deep well pump, and the other end is connected to the second pump pipe to guide the water in the well into the second pump pipe;

A plurality of the second pump pipes are sequentially connected end to end to form a tubular passage for leading the water in the well to the outside of the well.

Specifically, the two sections of the pump pipe are provided with a flange 1, wherein one end of the first pump pipe is fixedly connected to the water outlet of the deep well pump through the bolt hole on the flange 1, and the other end is fixedly connected to the water outlet of the deep well pump through the flange 1. The bolt holes of the flange plate 1 are connected to one end of the second pump pipe. In addition, several second pump pipes are fixedly connected end to end through the bolt holes on the flange 1 to form a tubular passage, which ensures the tightness between the pump pipes and increases reliability of the device operation.

Specifically, on the one hand, the multi-section design of the pump tube is convenient for disassembly and maintenance, which effectively saves the work cost; Flexible and convenient.

Specifically, as shown in Figure 2, the upper surface of the flange 1 is equidistantly provided with the first positioning hole 6, the second positioning hole 7, the third The positioning hole 8 and the fourth positioning hole 9, the first positioning hole 6, the second positioning hole 7 and the third positioning hole 8 jointly form a positioning hole array, and the positioning hole array is used to determine the installation position of the fixing mechanism, and the fourth positioning hole The hole 9 is used to determine the installation position of the protection mechanism, the diameter of the cable section is set as D0, and the diameter of the flange is set as the first diameter D1;

The first track is a circle with the distance from the center of the through hole of the flange 1 (1/2)×D1-(1/4)×D2 as the center and D2 as the diameter, and is connected to the flange 1 For the coincident trajectory of the upper surface, set D2 as the second diameter, where D2=3×D0;

The second trajectory is based on the edge path of the upper surface of the flange 1, and the first trajectory is moved counterclockwise by an angle of 2ɑ to coincide with the upper surface of the flange 1, wherein

;

The third trajectory is based on the edge path of the upper surface of the flange 1, and the first trajectory is moved counterclockwise by an angle of 4ɑ to coincide with the upper surface of the flange 1;

The fourth trajectory is based on the edge path of the upper surface of the flange 1, and the first trajectory is moved by an angle of 6ɑ in the counterclockwise direction to coincide with the upper surface of the flange 1;

The flange 1 is provided with a first positioning hole 6, a second positioning hole 7, a third positioning hole 8 and a fourth positioning hole 9, the first positioning hole 6, the second positioning hole 7, the third positioning hole 8 Equidistant distribution with the fourth positioning hole 9, the first positioning hole 6, the second positioning hole 7 and the third positioning hole 8 are jointly used to locate the installation position of the fixing mechanism, and the fourth positioning hole 9 is used to locate the protection mechanism;

The first positioning hole 6 is a through hole opened along the first track on the upper surface of the flange 1, and is used for co-locating the fixing mechanism with the second positioning hole 7 and the third positioning hole 8;

The second positioning hole 7 is a through hole provided on the upper surface of the flange 1 along the second track, and is used for co-locating the fixing mechanism with the first positioning hole 6 and the third positioning hole 8;

The third positioning hole 8 is a through hole opened along the third track on the upper surface of the flange 1, and is used to co-locate the fixing mechanism with the first positioning hole 6 and the second positioning hole 7;

The fourth positioning hole 9 is a through hole formed on the upper surface of the flange 1 along the fourth track, and is used for positioning the protection mechanism.

Specifically, the center of the flange 1 hole (1/2)×D1-(1/4)×D2 is selected based on experience so that the formed track is not completely located on the upper surface of the flange, and the first positioning The trajectories of the hole 6, the second positioning hole 7, the third positioning hole 8 and the fourth positioning hole 9 are all unclosed arcs whose center is located in the flange 1. This unique shape The design determines that the installation method of the cable is lateral extrusion installation instead of the traditional axial installation, and it is easier to install and disassemble when the cable is longer.

Specifically, please refer to FIG. 3, the lower surface of the flange 1 is equidistantly provided with a first matching groove 10, a second matching groove 11 and a third matching groove 12 according to the fifth track, the sixth track and the seventh track. , the first fitting groove 11, the second fitting groove 12 and the third fitting groove 13 jointly form a fitting groove array, and the fitting groove array is used to form a clearance fit between two flanges 1, and the thickness of the flange is set as first depth H1;

The edge of the lower surface of the flange 1 is equidistantly provided with a first matching groove 10, a second matching groove 11 and a third matching groove 12 according to the fifth track, the sixth track and the seventh track, and the flange plate 1 The fifth track, the sixth track and the seventh track are arranged on the lower surface, and the fifth track, the sixth track and the seventh track are equidistantly arranged;

The fifth trajectory is that the lower surface of the flange 1 uses the center of the first trajectory as a reference to shift the vertical projection of the first trajectory outward on the lower surface of the flange 1 (1 /3) The trajectory that coincides with the lower surface of the flange 1 after ×D2;

The sixth locus is that the lower surface of the flange 1 takes the center of the second locus as a reference to shift the vertical projection of the first locus outward on the lower surface of the flange 1 (1 /3) The trajectory that coincides with the lower surface of the flange 1 after ×D2;

The seventh locus is that the lower surface of the flange 1 takes the center of the third locus as a reference to shift the vertical projection of the first locus outward on the lower surface of the flange 1 (1 /3) The trajectory that coincides with the lower surface of the flange 1 after ×D2;

The lower surface of the flange 1 is provided with a first fitting groove 10, a second fitting groove 11 and a third fitting groove 12, the first fitting groove 10, the second fitting groove 11 and the third fitting groove 12 are equidistantly distributed, and the second fitting groove 11 is equidistantly distributed. A fitting groove 10, a second fitting groove 11 and a third fitting groove 12 are jointly used to form a clearance fit with the fixing mechanism;

The first matching groove 10 is a blind hole with a depth of H2 provided on the lower surface of the flange plate 1 along the fifth track, for cooperating with the second matching groove 11 and the third matching groove 12. The fixing mechanism forms a clearance fit, and the diameter of the first matching groove 10 is set as the third diameter D3, where D3=(4/3)×D2, and H2 is set as the second depth, where H2=(1/4) ×H1;

The second matching groove 11 is a blind hole with a depth of H2 provided on the lower surface of the flange plate 1 along the sixth track, for cooperating with the first matching groove 10 and the third matching groove 12. said securing mechanism forms a clearance fit;

The third matching groove 12 is a blind hole with a depth of H2 provided on the lower surface of the flange 1 along the seventh track, for cooperating with the first matching groove 10 and the second matching groove 11. The securing means form a clearance fit.

Specifically, the third diameter D3 is shifted outward by (1/3)×D2 from the vertical projection of the second diameter on the lower surface of the flange 1 and is compatible with the flange 1 The diameter of the track coincident with the lower surface, so D3=(4/3)×D2, the first fitting groove 10, the second fitting groove 11 and the third fitting groove 12 are used to reduce the size of the flange 1 and the interference between the lower surface of the upper flange 1 and the fixing mechanism on the lower flange 1 can ensure the clearance fit relationship between the two.

Specifically, the setting of the first fitting groove 10, the second fitting groove 11 and the third fitting groove 12 reduces the mutual interference of the connection of the flange 1 so as to ensure that the connection between the pump tubes does not occur The gap ensures the stability of the device operation.

Specifically, please refer to Fig. 4-Fig. The cable clamping groove 13 is respectively connected with the first positioning hole 6 and the first matching groove 10 for positioning the first cable, and the second cable clamping groove is respectively connected with the second positioning hole 7 and the second matching groove 10. The groove 11 is connected to locate the second cable, and the third cable clamping groove is respectively connected to the third positioning hole 8 and the third matching groove 12 to locate the third cable;

The cable buckle is a flexible member, and the cable buckle includes a first cable buckle 18, a second cable buckle and a third cable buckle, and the first cable buckle 18 is connected to the first cable buckle 13 , used to fix the first cable, the second cable buckle is connected with the second cable slot for fixing the second cable, and the third cable buckle is connected with the third cable slot for to secure the third cable.

Specifically, the first cable buckle 18 is used in conjunction with the first cable groove 13, the second cable buckle is used in conjunction with the second cable groove, and the third cable buckle is used in conjunction with the second cable groove. The third cable slot is used in conjunction with it.

Specifically, the first cable clip groove 13, the second cable clip groove, the third cable clip groove, the first cable clip 18, the second cable clip and the third cable clip are all independent components to facilitate separate processing Forming, and the special-shaped components are more likely to produce stress concentration during the working process, resulting in damage to the components. The components that are processed and formed separately can be replaced in time without dismantling the main structure of the device, which saves work costs and reduces the difficulty of maintenance.

Specifically, please refer to FIG. 4 and FIG. 5, the first cable slot 13, the second cable slot and the third cable slot are composed of a stepped main body, a circular platform slot 17 and The card slot opening 14 is composed of three parts which are integrally formed and non-standard parts which are rigid and non-closed;

The stepped main body is a non-standard part formed integrally with the first cylinder 15 and the second cylinder 16 coaxially;

The first cylinder 15 is a cylindrical rigid body with a diameter of D4 and a height of the second depth H2, and the first cylinder 15 is arranged on the upper surface of the flange 1 to fix the second cylinder The position of the body 16, and for clearance fit with the first fitting groove 10, the second fitting groove 11 and the third fitting groove 12 of another flange 1, D4 is set as the fourth diameter , the fourth diameter D4=(9/10)×D3;

The second cylinder 16 is a cylindrical rigid body with a diameter of the second diameter D2 and a height of H3, and is arranged in the first positioning hole 6, the second positioning hole 7 and the third positioning hole 8 , to bear the working pressure, set H3 as the third depth, and the third depth H3=H1-H2;

The circular table slot 17 is arranged inside the first cylinder 15 and the second cylinder 16, and the center of the upper surface of the first cylinder 15 is used as the center of the circle and the second diameter D2 is used as the diameter to form a circle. Set the obtained circle as the first circle, set the angle between the busbar of the slot and the vertical line as the first angle θ, and set the first diameter D1, the first angle θ, and the second depth H2 and the third depth H3 is calculated according to the formula D5=D2-2×tanθ×(H2+H3) to obtain the fifth diameter D5, taking the center of the lower surface of the second cylinder as the center and the fifth diameter D5 as the diameter Make a circle, set the obtained circle as the second circle, and the circular table slot 17 is to make the first circle and the second circle according to the first included angle θ for the first cylinder 15 and the second circle. The frustum arc surface obtained by cutting the second cylinder 16 is used for fixing and matching the first cable buckle 18, the second cable buckle and the third cable buckle, and H2+H3 is set as the fourth depth H4;

The slot opening 14 is arranged on the first cylinder and the second cylinder, and a rectangular notch with the fourth diameter D4 as the length and the fourth depth and H4 as the height is provided for laterally installing the The first cable buckle 18, the second cable buckle and the third cable buckle.

Specifically, the fourth diameter D4=(9/10)×D3 is selected based on experience, so that the matching relationship between the first cylinder and the corresponding matching groove is a clearance fit, and the first positioning hole 6, the The diameters of the second positioning hole 7 and the third positioning hole 8 and the diameter of the second cylinder 16 are equal to the second diameter D2, so that the cable clamping groove is fixed in the first positioning In the hole 6, the second positioning hole 7 and the third positioning hole 8, the depth of the first fitting groove 10, the second fitting groove 11 and the third fitting groove 12 is consistent with the The height of the first cylinder 15 is equal to the second depth H2, and the third diameter D3 is greater than the fourth diameter D4, so that the cable clamping groove and the first matching groove 10, the The second matching groove 11 and the third matching groove 12 form a clearance fit, the cable clamping groove is a rigid member to bear the gravity of the cable, and the cable clamping groove is a non-closed member to realize the cable buckle The lateral installation prolongs the service life of the cable.

Specifically, please refer to the first cable buckle 18 shown in FIG. 6 and FIG. The three parts of the buckle opening 19 form an integrally formed non-standard piece that is flexible and not closed;

The upper surface of the frustum-shaped main body is the first circle, the lower surface is the second circle, the angle between the busbar and the vertical line is the first angle θ of the flexible circular frustum member, and the circular frustum slot 17 connections for carrying working pressure;

The cable through hole 20 is arranged inside the frustum-shaped main body, the center of the upper surface of the frustum-shaped main body is the center of the circle and D6 is the diameter to make a circle, and the obtained circle is set as the third circle. The cable through hole 20 is a through hole formed on the frustum-shaped main body according to the third circle, for fixing the first cable, the second cable and the third cable, D6 is set as the sixth diameter, the sixth Diameter D6=(9/10)×D0;

The buckle opening 19 is provided on the frustum-shaped main body, and a rectangular notch with the length L1 as the length and the fourth depth H4 as the height is provided for laterally installing the first cable, the second cable and the For the third cable, L1 is set as the first length, and the first length L1=(1/2)×D0.

Specifically, the sixth diameter D6=(9/10)×D0 is selected based on experience. Since the cable clamping groove is made of flexible material, the diameter is slightly smaller than the diameter of the cable to facilitate lateral clamping. The surface is the first circle, the lower surface is the second circle, and the angle between the bus bar and the vertical line is the first angle θ. The flexible circular platform member cooperates with the circular platform slot 17 to realize the cable fixed, the cable buckle is a flexible member, which is extruded and deformed by an external force, and the sixth diameter D6 is smaller than the diameter D0 of the cable, so that the cable buckle clamps the cable under the action of elastic force to reduce relative sliding, and the cable is Under the action of its own gravity, the cable buckle moves downward, and the cable buckle is clamped with the increase of gravity with its unique circular platform structure, so that the cable is between each pump tube due to its own gravity. Automatic straightening effectively avoids cable interference and knotting during work, and distributes the gravity of the cable to each of the cable slots and cable buckles, reducing the stress on the cables. The cable buckles are The non-closed member is used to realize the lateral installation of the cable, which not only increases the working stability of the device, but also prolongs the service life of the cable and improves the safety of the equipment.

Specifically, the hollow hinge 3 is connected with the fourth positioning hole 9, the diameter of the hollow hinge 3 is equal to the second diameter D2, and the hollow hinge 3 includes a first sheet, a second The sheets and the hollow tube, the first sheet and the second sheet are arranged on the hollow tube;

The first leaf is fixedly connected to the protective sleeve 4 for fixing the second leaf and the hollow tube;

The second sheet is connected to the cable cover 5 and freely rotates around the axis of the hollow tube to realize the opening and closing operations of the cable cover 5;

The inner diameter of the hollow tube is D7, which is used to determine the installation position of the water level measuring mechanism. D7 is set as the seventh diameter, and the seventh diameter D7=(11/10)×D0;

The cable cover 5 includes a rigid cover, a flexible spacer and a latch, and the flexible spacer is arranged inside the rigid cover;

The rigid cover is connected to the second sheet for opening and closing operations through the rotation of the second sheet;

The flexible pad is used to protect cables and reduce impact;

The pin is arranged at the joint between the rigid cover and the protective sleeve 4 for fixing the rigid cover on the protective sleeve 4 .

Specifically, the seventh diameter D7=(11/10)×D0 is selected based on experience. In order to ensure that the inner diameter of the hollow pipe is larger than the inner diameter of the PE pipe, the use of the hollow hinge 3 can not only save materials, but also Fixing the water level measuring device further improves the safety of the device. The cable cover plate 5 and the protective sleeve 4 are connected through the hollow hinge 3 to form a closed space, which not only protects the cable from being rubbed by sand and stones in the well, It also realizes the separation of water and electricity to prevent electric leakage accidents. The flexible pad not only protects the cables to reduce impact, but also helps to fix the cables by elastically clamping the cables by itself, which further improves the stability of the device.

Specifically, as shown in FIG. 8, the water level measuring mechanism includes a PE pipe 21, a pressure sensor 22 and a calculation module, the pressure sensor 22 is arranged at the bottom of the PE pipe 21, and the pressure sensor 22 is connected to the calculation module;

The inner diameter of the PE pipe 21 is set as the eighth diameter D8, which is numerically equal to the cable cross-sectional diameter D0, and the bottom of the PE pipe 21 is parallel to the bottom of the deep well pump and communicated with the deep well pump for Synchronized with real-time water level;

The pressure sensor 22 is used to detect the real-time pressure F of the water column in the PE pipe 21, and send the detected real-time pressure result to the calculation module;

The calculation module is used to calculate the real-time water level h of the well according to the real-time pressure result obtained from the pressure sensor 22 .

Specifically, due to the special working environment of the deep well pump, the wellhead is fully closed to prevent falling objects during normal operation. The closed wellhead cannot be used for water level observation. It is impossible to form observation data of system water volume and water level, and the water level may drop too quickly. It is very necessary to monitor the water level in the well in real time if the pump is lost and the pump is burned.

Specifically, the water level measuring mechanism of the present invention utilizes the principle of a connector to keep the liquid level in the PE pipe 21 the same as the liquid level in the well at all times. By calculating the real-time liquid level in the PE pipe 21, that is The real-time liquid level height in the well can be obtained, which can effectively prevent the phenomenon of the pump being lost and burned when the water level drops too fast, which improves the reliability of the device and further ensures the safety of the device. At the same time, the PE pipe 21 is arranged in the hollow In the hollow tube of the hinge 3, one piece is dual-purpose to save cost.

Specifically, the calculation module is used to calculate the real-time water level h of the well according to the real-time pressure result obtained from the pressure sensor 22, wherein,

Substitute the eighth diameter D8, the density ρ of water, the acceleration of gravity g and the real-time pressure F into the formula

Calculate the size of the real-time water level h of the well.

Specifically, the quality of the water in the PE pipe 21 can be obtained according to the real-time pressure F and the gravitational acceleration g measured by the pressure sensor 22 in real time, and the value of the eighth diameter D8 is known, and the well can be obtained by calculation. The real-time water level h further guarantees the safety of the device.

So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings, but those skilled in the art will easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to related technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention; for those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. A safety device for cable protection and water level protection of a deep well pump, comprising:

the pump pipe is connected with the deep-well pump and used for guiding out liquid in the well to the outside of the well through the tubular passage according to the power provided by the deep-well pump;

the flange plates are arranged at two ends of the pump pipe, through holes with the size equal to the diameter of the pump pipe are formed in the center of the flange plates, threaded through holes are formed in the circumference of the flange plates at equal intervals by taking the axis as a reference, the flange plates are used for sequentially connecting the head parts and the tail parts of the pump pipes through bolts to form tubular passages, and the flange plates are used for determining the installation positions of the fixing mechanism and the protecting mechanism;

the fixing mechanism comprises a cable clamping groove and a cable buckle, wherein the cable clamping groove is respectively connected with the flange plate and the cable buckle and used for determining the installation position and the installation mode of the cable and fixing the cable according to the gravity of the cable;

the protection mechanism comprises a hollow hinge, a cable cover plate and a protection sleeve, wherein the hollow hinge is respectively connected with the cable cover plate, the protection sleeve and the flange plate, the cable cover plate is connected with the protection sleeve, the protection sleeve is connected with the flange plate, the protection sleeve completely covers the pump pipe and the fixing mechanism, so as to avoid the contact of a cable with liquid in a well, the hollow hinge is used for realizing the opening and closing operation of the cable cover plate through rotation, and the installation position of the water level measurement mechanism is determined;

The water level measuring mechanism is respectively connected with the protection mechanism and the deep well pump and is used for measuring the real-time water level in the well;

the pump pipes comprise a first pump pipe and a plurality of second pump pipes, and the first pump pipe and the second pump pipes are perpendicular to the ground;

one end of the first pump pipe is connected with the water outlet of the deep well pump, and the other end of the first pump pipe is connected with the second pump pipe, so that liquid in the well is led into the second pump pipe;

the second pump pipes are sequentially connected end to form a tubular passage for guiding out the liquid in the well to the outside of the well;

the upper surface of the flange plate is provided with a first positioning hole, a second positioning hole, a third positioning hole and a fourth positioning hole at equal intervals according to a first track, a second track, a third track and a fourth track, the first positioning hole, the second positioning hole and the third positioning hole form a positioning hole array together, the positioning hole array is used for determining the installation position of the fixing mechanism, the fourth positioning hole is used for determining the installation position of the protection mechanism, the diameter of the section of the cable is set as D0, and the diameter of the flange plate is set as a first diameter D1;

the first track is a track which takes a position which is the center D2 of a circle and is the distance from the center (1/2) x D1- (1/4) x D2 of the through hole of the flange as a circle, and coincides with the upper surface of the flange, the diameter of the section of the cable is set as D0, and D2 is set as a second diameter, wherein d2=3×d0;

The second track is a track which is overlapped with the upper surface of the flange after the first track moves by an angle 2 alpha in the anticlockwise direction by taking the edge path of the upper surface of the flange as a reference, wherein；

The third track is a track which is overlapped with the upper surface of the flange after the first track moves by an angle of 4 alpha in the anticlockwise direction by taking the edge path of the upper surface of the flange as a reference;

the fourth track is a track which is overlapped with the upper surface of the flange after the first track moves by an angle 6 alpha in the anticlockwise direction by taking the edge path of the upper surface of the flange as a reference;

the flange plate is provided with a first positioning hole, a second positioning hole, a third positioning hole and a fourth positioning hole, the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole are distributed at equal intervals, the first positioning hole, the second positioning hole and the third positioning hole are used for positioning the mounting position of the fixing mechanism together, and the fourth positioning hole is used for positioning the protection mechanism;

the first positioning hole is a through hole formed in the upper surface of the flange plate along the first track and used for positioning the fixing mechanism together with the second positioning hole and the third positioning hole;

The second positioning hole is a through hole formed in the upper surface of the flange plate along the second track and used for positioning the fixing mechanism together with the first positioning hole and the third positioning hole;

the third positioning hole is a through hole formed in the upper surface of the flange plate along the third track and used for positioning the fixing mechanism together with the first positioning hole and the second positioning hole;

the fourth positioning hole is a through hole formed in the upper surface of the flange plate along the fourth track and used for positioning the protection mechanism.

2. The safety device for protecting the cable and the water level of the deep-well pump according to claim 1, wherein the lower surface of the flange plate is provided with a first matching groove, a second matching groove and a third matching groove at equal intervals according to a fifth track, a sixth track and a seventh track, the first matching groove, the second matching groove and the third matching groove jointly form a matching groove array, the matching groove array is used for forming clearance fit between the two flange plates, and the thickness of the flange plate is set to be a first depth H1;

the fifth track is a track which is overlapped with the lower surface of the flange after the first track is projected and outwards shifted (1/3) multiplied by D2 in the vertical direction of the lower surface of the flange by taking the circle center of the first track as a reference;

The sixth track is a track which is overlapped with the lower surface of the flange after the first track is projected and outwards shifted (1/3) multiplied by D2 in the vertical direction of the lower surface of the flange by taking the circle center of the second track as a reference;

the seventh track is a track which is overlapped with the lower surface of the flange after the first track is projected and outwards shifted (1/3) multiplied by D2 in the vertical direction of the lower surface of the flange by taking the circle center of the third track as a reference;

the lower surface of the flange plate is provided with a first matching groove, a second matching groove and a third matching groove which are distributed at equal intervals, and the first matching groove, the second matching groove and the third matching groove are used together to form clearance fit with the fixing mechanism;

the first matching groove is a blind hole with the depth of H2 formed on the lower surface of the flange along the fifth track, and is used for forming clearance fit with the fixing mechanism under the combined action of the second matching groove and the third matching groove, the diameter of the first matching groove is set to be a third diameter D3, wherein d3= (4/3) x D2, and H2 is set to be a second depth, wherein h2= (1/4) x H1;

The second matching groove is a blind hole with the depth of H2 formed on the lower surface of the flange along the sixth track and is used for forming clearance fit with the fixing mechanism under the combined action of the first matching groove and the third matching groove;

the third matching groove is a blind hole with the depth of H2 formed in the lower surface of the flange along the seventh track, and the blind hole is used for forming clearance fit with the fixing mechanism under the coaction of the first matching groove and the second matching groove.

3. The safety device for protecting the cable and protecting the water level of the deep-well pump according to claim 2, wherein the cable clamping groove is a rigid member, the cable clamping groove comprises a first cable clamping groove, a second cable clamping groove and a third cable clamping groove, the first cable clamping groove is respectively connected with the first positioning hole and the first matching groove and used for positioning a first cable, the second cable clamping groove is respectively connected with the second positioning hole and the second matching groove and used for positioning a second cable, and the third cable clamping groove is respectively connected with the third positioning hole and the third matching groove and used for positioning a third cable;

the cable buckle is flexible component, the cable buckle includes first cable buckle, second cable buckle and third cable buckle, first cable buckle with first cable draw-in groove is connected, is used for fixing first cable, the second cable buckle with second cable draw-in groove is connected, is used for fixing the second cable, the third cable buckle with third cable draw-in groove is connected, is used for fixing the third cable.

4. The safety device for protecting a cable and protecting a water level of a deep well pump according to claim 3, wherein the first cable clamping groove, the second cable clamping groove and the third cable clamping groove are non-standard parts which are formed integrally by a stepped main body, a round table clamping groove and a clamping groove opening and have non-closed rigidity;

the stepped body is a non-standard part formed by coaxially arranging a first cylinder and a second cylinder into a whole;

the first cylinder is a cylindrical rigid body with a diameter D4 and a height of the second depth H2, and is arranged on the upper surface of the flange plate and used for fixing the position of the second cylinder and for being in clearance fit with the first fit groove, the second fit groove and the third fit groove of the other flange plate, D4 is set to be a fourth diameter, and the fourth diameter D4= (9/10) multiplied by D3;

the second cylinder is a cylindrical rigid body with the diameter of the second diameter D2 and the height of H3, is arranged in the first positioning hole, the second positioning hole and the third positioning hole and is used for bearing working pressure, H3 is set to be a third depth, and the third depth H3 = H1-H2;

the round platform clamping groove is formed in the first cylinder and the second cylinder, the circle center of the upper surface of the first cylinder is taken as the circle center, the second diameter D2 is taken as the diameter to be a circle, the obtained circle is set to be a first circle, the included angle between a bus of the clamping groove and a plumb line is set to be a first included angle theta, the first diameter D1, the first included angle theta, the second depth H2 and the third depth H3 are calculated according to the formula D5 = D2-2 x tan theta x (H2 + H3) to obtain a fifth diameter D5, the circle center of the lower surface of the second cylinder is taken as the circle center, the fifth diameter D5 is taken as the diameter to be a circle, the obtained circle is set to be a second circle, the round platform clamping groove is a cambered surface obtained by cutting the first circle and the second circle to the first cylinder and the second cylinder according to the first included angle theta, and is used for fixing and matching the first cable buckle, the second cable buckle and the third cable buckle, and the H2+ H3 are set to be a fourth depth H4;

The clamping groove opening is formed in the first cylinder and the second cylinder, a rectangular notch with the fourth diameter D4 as the length and the fourth depth H4 as the height is formed, and the rectangular notch is used for laterally mounting the first cable buckle, the second cable buckle and the third cable buckle.

5. The safety device for protecting a cable and protecting a water level of a deep well pump according to claim 4, wherein the first cable fastener, the second cable fastener and the third cable fastener are non-standard parts which are formed integrally by a truncated cone-shaped main body, a cable through hole and a fastener opening and are flexible and not closed in a ring shape;

the flexible round table component is connected with the round table clamping groove and used for bearing working pressure, and the included angle between the bus and the plumb line is a first included angle theta;

the cable through hole is arranged in the circular truncated cone-shaped main body, the circle center of the circle on the upper surface of the circular truncated cone-shaped main body is taken as a circle center D6, the circle is taken as a circle with the diameter, the obtained circle is set as a third circle, the cable through hole is a through hole formed on the circular truncated cone-shaped main body according to the third circle and used for fixing the first cable, the second cable and the third cable, D6 is set as a sixth diameter, and the sixth diameter D6= (9/10) multiplied by D0;

The buckle opening set up in on the round platform shape main part, set up with L1 as length fourth degree of depth and H4 is high rectangle breach, be used for the side direction installation first cable second cable with the third cable, set L1 as first length, first length L1= (1/2) x D0.

6. The safety device for cable protection and water level protection of a deep well pump according to claim 5, wherein the hollow hinge is connected with the fourth positioning hole, the diameter of the hollow hinge is equal to the second diameter D2, the hollow hinge comprises a first sheet, a second sheet and a hollow tube, and the first sheet and the second sheet are arranged on the hollow tube;

the first page piece is fixedly connected to the protective sleeve and used for fixing the second page piece and the hollow tube;

the second leaf is connected with the cable cover plate and rotates freely by taking the hollow tube axis as an axis, so as to realize the opening and closing operation of the cable cover plate;

the inner diameter of the hollow tube is D7, so as to determine the installation position of the water level measuring mechanism, D7 is set as a seventh diameter, and the seventh diameter D7= (11/10) multiplied by D0;

the cable cover plate comprises a rigid cover plate, a flexible cushion block and a bolt, wherein the flexible cushion block is arranged on the inner side of the rigid cover plate;

The rigid cover plate is connected with the second page piece and is used for realizing opening and closing operations through the rotation of the second page piece;

the flexible cushion block is used for protecting the cable to reduce impact;

the bolt is arranged at the joint of the rigid cover plate and the protective sleeve and is used for fixing the rigid cover plate on the protective sleeve.

7. The safety device for protecting the cable and the water level of the deep-well pump according to claim 6, wherein the water level measuring mechanism comprises a PE pipe, a pressure sensor and a calculation module, the pressure sensor is arranged at the bottom of the PE pipe, and the pressure sensor is connected with the calculation module;

setting the inner diameter of the PE pipe as an eighth diameter D8, wherein the eighth diameter D8 is equal to the cable section diameter D0 in value, and the bottom of the PE pipe is parallel to the bottom of the deep well pump and communicated with the deep well pump so as to keep synchronization with the real-time water level;

the pressure sensor is used for detecting the real-time pressure F of the water column in the PE pipe and sending the detected real-time pressure result to the calculation module;

the calculation module is used for calculating the real-time water level h of the well according to the real-time pressure result obtained from the pressure sensor.

8. The safety device for cable protection and water level protection of a deep well pump of claim 7, wherein the calculation module is configured to calculate a real-time water level h of the well from a real-time pressure result obtained from the pressure sensor;

Substituting the eighth diameter D8, the density rho of the water, the gravity acceleration g and the real-time pressure F into a formula

The magnitude of the real-time water level h of the well is calculated.