JPS63502200A - A pump device that lifts water from a particularly deep well. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] A pump device that lifts water from a particularly deep well. This application is a power and motion ice delivery pump especially intended for lifting water from deep wells. Water is transmitted to the unit and ice is sent out from the well hole through the pressure valve during the pump operation stroke. A pump device that can be pumped into the mouth of a delivery pipe connected to a pump unit. In this device, water is connected to the delivery pump via the suction valve during the return stroke. The well water enters the delivery pump unit through the connected well water inlet.

Today's water pumps are most often in the form of piston pumps, where the piston is located at the bottom of the ground and connected via a tension rod to an auxiliary drive means located at the ground surface. It will be done. Piston pumps intended for deep wells are heavy and cannot be easily handled.

Furthermore, such pumps have high transportation and installation costs.

Because it is difficult to drill a truly vertical well hole, when using a piston pump, the Complex guide means for oversizing a doorway or drilling a well , which allows the tension rod to reciprocate substantially vertically. make it possible to do so. Both of these measures are very expensive.

connected through a pressure conduit to an auxiliary actuating device located in this connection on the ground surface. It is also known to use compressible and deflated chambers that are lowered into wells. US special No. 4,008°008 teaches a pump of this type, which compresses and compresses said chamber. The auxiliary actuator for deflation consists of a piston-type feed pump. feed Place the pump in an easily accessible location for easy seal replacement However, the hydraulic system cannot be refilled with working fluid because it is lost due to leakage. It is necessary to make sure that In hot climates the working fluid present in the pump housing is Working fluid maintains desired working pressure when exposed to high ambient temperatures and during pump operation There is a risk that the volume will decrease to such an extent that it becomes difficult to

It is also well known to use compressed air pumps and electrically driven pumps for deep water wells. Ru. However, such pumps require access to an external power source, which is an inconvenient requirement especially when working in developing countries.

This is why groundwater is often located deep underground in developing countries. Open Because of the poor economies of developing countries, cost factors often affect whether or not a well can be built. to be fully determined.

In order to cheaply construct deep water wells, it is only possible to use drilled holes of small dimensions. It is necessary to use pump equipment that is constructed to allow deviation from the vertical.

Additionally, the installation of auxiliary power sources and the transportation of fuel to them are often difficult to overcome. Partly because maintenance and repair work is kept to a minimum and mature. Pumping equipment should be able to be made inexpensively to avoid the need for full training personnel. Must be.

The present invention satisfies all of the above requirements while addressing the drawbacks found in manually operated piston pumps. Concerning pumping devices that are not encountered.

This object is achieved by a pump device having the features set out in the claims below. be done.

1. Drive power is transmitted through hydraulic lines, allowing for truly vertical installation of the pump device The need to drill holes is greatly reduced. Furthermore, lightweight plastic pipes can be used. , transportation costs are greatly reduced compared to those required for conventional piston pumps.

The feed pump unit and delivery pump chambers are completely closed and provide a hydraulic system. It has a bellows cylinder configuration that eliminates the need to replenish hydraulic fluid. Provides a pumping device that allows the feed pump to be placed protectively below the ground surface. do.

The above and other features of the invention will be explained in further detail with reference to the accompanying drawings. It will become clear from the detailed description below.

FIG. 1 is a schematic diagram, partially in cross section, of a first embodiment of a pump device according to the invention; FIG. 2 is a sectional view of a delivery pump according to a second embodiment of the invention; FIG. 3 is a sectional view of a third embodiment of a delivery pump unit according to the invention: 4-6 are cross-sectional views of a delivery pump unit according to another embodiment of the present invention: Figures 4 and 5 include horizontal cross-sections: and FIG. 7 shows an implementation of a spring device suitable for use in the pump device according to FIG. FIG. 3 is an example cross-sectional view.

FIG. 1 schematically shows a pump device constructed according to the present invention and housed in a well tube 1. Shown below. This pump device includes a feed pump unit 2, a delivery pump unit 3. It includes a hydraulic line connecting the two pump units and a delivery pipe 5.

The main components of the feed pump unit include a compressible and expandable chamber 6; The chamber 6 includes a bellows cylinder with a rigid end wall. The bellows cylinder is It is connected at its upper end to an auxiliary drive mechanism (not shown) that moves the cylinder up and down.

The auxiliary mechanism may be of any suitable type and does not form part of the invention. However, Pon Considering the intended field of use of the pump device, the auxiliary drive is preferably simple in terms of maintenance. It is a simple manual operation system. For example, this mechanism drives the gear rack 15. A lever-operated pinion 14 is included.

The lower end of the bellows cylinder 6 is firmly attached to the feed pump unit 2, and the lower end of the bellows cylinder 6 is firmly attached to the feed pump unit 2. The bottom of the cylinder has a hydraulic line 4 connected to the feed pump unit that opens to the top end. A mouth opening is formed. Delivery pump unit 3 placed near the bottom of the well includes a compressible and expandable chamber 7 in the form of a bellows cylinder, the upper end of which is It is connected to the lower end of the hydraulic line 4. The bellows cylinder 7 is connected to the hydraulic line 4, sending A port incorporating connection openings to which pipes 5 and well water inlet pipes are connected, respectively. is housed in the pump housing 8.

The rigid upper end wall of the bellows cylinder is firmly attached to the pump housing 8 with a tap pipe. and the delivery pipe connection opening can be located in the upper end wall of the pump housing. Ru. This positioning of the delivery vibrator connection opening reduces the space required laterally of the pump device. This means that the diameter of the bellows cylinder 7 only slightly exceeds the diameter of the bellows cylinder 7. Sending bar In other positions of the pipe connection opening, the delivery pipe is It is required to have an extension that lies outside the surface dimensions.

The return spring 9 is installed between the respective bottom walls of the bellows cylinder 7 and the housing 8. It is located.

This pump device operates as follows. That is, during the operating stroke, the bellows cylinder 6 It is compressed by the action of the auxiliary drive mechanism.

Since the bellows cylinder 6.7 and the hydraulic line 4 constitute a closed hydraulic system, The decrease in the volume of bellows cylinder 6 as a result of compression reduces the volume of bellows cylinder 7 corresponds to an increase of the same magnitude in , i.e. an expansion of the cylinder. As a result, the return spring 9 is compressed, increasing the pressure in the pump housing, which causes Then, a pressure valve 1O located near its connection to the pump housing opens. this At the same time, a volume of water equal to the increase in the volume of the bellows cylinder 7 enters the pump housing. is pushed into the delivery pipe.

During the return stroke the bellows cylinder 7 is compressed with the aid of the return spring 9. Be As a result of this reduction in the volume of the low cylinder, the pressure in the pump 9 ring is reduced and also The pressure valve IO is closed and the suction valve 11, which is integrated into the well water inlet tube, is opened. However At the same time as the bellows cylinder 7 is compressed, water flows from the well into the pump housing.

Following compression of the bellows cylinder 7, a new working stroke is started and the required water volume is Providing the return spring 9 according to the present invention ensures that the pump device functions satisfactorily. This means that a water column of more than 10 meters in height must be This is because frying is not possible due to insufficient pressure. Weight of liquid column in hydraulic line In order to compensate for this, the coil spring 9 is pretensioned or biased to a certain degree. It must be possible to compress the bellows cylinder 7 to its maximum extent. hydraulic pressure When the hydraulic fluid used in the system is water, the maximum compression of the bellows cylinder 7 and As a result of the assumed equilibrium of The formula is obtained.

Fa=ρ・g−A? (ha hb) Here, F = pretension force of return spring 9 = raw fluid density g = gravitational acceleration A7 = Bottom area of chamber 7 of delivery pump unit, = Height of hydraulic line hb = level of water in the well with respect to the bottom of the well During the actuation stroke the return spring 9 It is compressed beyond the compression determined by the bias or pretension of the pulling force. above Since the bellows cylinder 6 receives virtually no external load, strictly speaking it is a spring. The additional spring force created when compressing F0 beyond its pretension force is the springs are not needed to perform the work required during the process. Therefore, the speed used The pull preferably has a minimum possible spring force of at least 20 bias or pretension. It is a spring that exhibits the characteristics that occur within the stroke range of the bellows cylinder 7.

In Figures 2-6, parts of the pump device corresponding to similar parts in the embodiment of Figure 1 are the same. indicated by the same reference numeral plus 100.

FIG. 2 shows the result of replacing the return spring 9 with a tension spring 109. 1 shows a pump device that is mainly different from the corresponding unit shown in FIG. The result of this substitution , only the h space occupied by the coiled return spring in the compressed state of the housing The axial extension of the rod 108 is reduced.

FIG. 3 shows a third embodiment of the invention. The delivery pump unit 203 of this embodiment is substantially radially expandable and in the form of a bellows cylinder generally designated 220; Contains a compressible chamber 207. The bellows cylinder is a hose-like main part or body 221 , whose ends 224 and 225 are the side edges of two disc-shaped holder elements 222 and 223. The holder elements 222, 223 are firmly connected to the top of the bousing 208 and Strongly connected to the bottom. The diameter of the disc-shaped holder element is equal to the diameter of the hose-shaped main part. It is also strong against the adjacent parts of the main part of the bellows cylinder and the holder element. The end connecting part located between the connected ends 224 and 225 is the non-negative part of the bellows cylinder. In the relaxed state (the state shown in FIG. 3), the main portion 2 is in contact with the end face of the holder element. It extends perpendicularly to the longitudinal direction of 21.

As mentioned above, the delivery pump includes a return spring. In the embodiment shown in FIG. The spring is attached to the hose-like main portion 221. of the bellows cylinder 220. Appropriate aspects, examples For example, it includes one or more rubber plates 228 bonded together by vulcanization.

The goto plate in the third embodiment is attached to the inside of the bellows cylinder, but this can be replaced with It will be appreciated that the plate may be attached to the outside of the cylinder.

The hose-like body of the bellows cylinder shown is made of an elastic material, e.g. The pretension can also cause the hose-like body to relax or (j untensioned state, That is, from the state shown in FIG. 3, the liquid column 20 is moved to the no-load position in the delivery pump unit. 4. However, the end connecting portions 226 and 227 Rubber springs are provided because they offer negligible resistance to expansion. It takes only a small amount to cause a relatively large increase in the volume of the hose-like body 221 in the absence of The reason for this is that the hose-like body takes the shape of an hourglass, and this pressure is sufficient. The configuration allows both ends of the hose to be directed outwardly without expanding the material within the hose. obtained by extending or expanding. Can be used for expansion of working stroke The volume is too small for such embodiments.

Place one or more pretension rubber plates 228 on the hose body and These plates) extend along the entire length of the main portion 221, and in the case of multiple plates, the main portion against the expansion of the bellows cylinder by uniformly distributing it around the minute 221. Uniform resistance can be obtained because of the base reinforced by the rubber plate 228. The resistance to bending of the main part 221 of the low cylinder is the resistance of the end connecting parts 226, 227. This is because it is larger than the roll-up resistance. Therefore, the expansion of chamber 207 is essentially This is done by radial expansion of the main part 221 of the hose body to which the rubber plate is attached.

Appropriate reinforcement of the rubber plate 228 does not increase resistance to radial expansion. It is relatively easy to obtain selective bending resistance of the plate. Of course, hose-like Selective resistance to bending of the main portion 221 can be achieved in a similar manner, but at the end connections. The entire hose-like body, including the parts 226 and 227, should be integrally formed as one piece. Therefore, it is inappropriate from a manufacturing standpoint to provide a foreign reinforcement to the hose-like body. stomach.

In the embodiment shown in FIG. However, the rubber spring according to the present invention is distributed uniformly around the entire circumference of the main portion 221. May include a single plate or any number of uniformly distributed plates extending around the enclosure can.

In addition to providing a pretension force corresponding to the force F0 of the return spring 9, the feed of the invention The important function of the rubber spring in the output pump unit is to ensure that the hose body receives the load. The goal is to ensure that the configuration shown in Figure 3 is taken when the situation is not met. Created by Muro207 The exact manner in which it expands during the motion stroke and reaches its final expanded state is relevant to this. It's not important. On the other hand, the maximum possible volume when chamber 207 is in its final expanded state It is important to take A section of roll-up resistance that acts to prevent deformation. minutes prevents complete inflation of chamber 207 and the chamber becomes balloon-like in its final inflated state. configuration, in which end 224.225 expands portion 226.227. In order to prevent an increase in the roll-up resistance of the end connection portions 226 and 227, As a result, both ends of main portion 22+ reach the side walls of housing 208 first. It is possible to ensure that expansion of the chamber occurs. This means that the remainder of the main part 221 The end connections 226 and 227 allow continued expansion of the Deformation into the annular space between the side wall of the housing 208 and the end 224,225 This is because it can spread.

Thus, locally isolated bending resistance or spring characteristics can be applied to the hose-like main portion 22. 1 to give the desired expansion sequence. This is an example For example, it has different characteristics and extends around the main portion 221 in the axial direction of the main portion. Rubber springs in the form of bands uniformly distributed along the length instead of rubber plates This can be achieved by using

In this regard, the resistance to bending of the plate or plates 228 may be suitably large. If the chamber 20 is large enough, the desired expansion sequence can be obtained. 7. The initial expansion from the unloaded or relaxed state is the part that expands most easily, i.e. the end contact. This is because the main portion 221 is a plate. 228, first bends and expands at the end section joining parts 226, 227 .

The return spring of the delivery pump unit may be of any other form than that described and illustrated here. It is understood that this can be the case.

For example, a return spring can be mounted diagonally in two opposite directions joined together at an intersection. It can include an elongated rubber band.

The hose need not be made of elastic material. Hose-like body or main part 221 is allowed By pleating or corrugating the flexible hose-like body, the tongue shown in FIG. - form, and the body responds to the action of the force generated by the rubber spring. It is brought into an inflated state with the pleats or corrugations removed. In this example, the The hose-like body determines the final expansion state of the hose-like body and the part shown on the left in FIG. It can be conveniently enclosed by a foraged cylinder. this cylinder , a large tension is generated in the hose-like body regardless of the working pressure applied to the hose-like body. This is advantageous in some applications.

Two holder rings 231 are shown on the right side of FIG. has a configuration suitable for limiting expansion of the end connecting portions 226, 227 in the . These parts are designed to operate exclusively on said parts without the material within them being subjected to appreciable tension. The ends 224, 225 of the hose-like body are in the chamber because they expand substantially as a result of the vertical reciprocating motion. is substantially unloaded during the inflation sequence, and the presence of the holder ring 231 Prevents shear forces from being developed at ends 224, 225 in the final expanded state of the hose. Stop.

FIG. 4 shows another embodiment of the delivery pump unit according to the invention. In this example The feed pump unit is connected to the wall of the housing 308 and the bellows cylinder 3. 20, and the pump operation is via the hose of the cylinder. This is achieved by reducing the central cylindrical space within the annular body 321, which reduces the annular chamber 30. This is caused by the expansion of 7.

This expansion is effected by a preferably rubber spring placed around the hose-like body 321. radially projecting springs 328. Horizontal as shown in Figure 4B As shown by chain lines in the cross-sectional view, the springs 328 are arranged between springs 328 spaced apart in the circumferential direction. The cross-section of the hose body shown in FIG. It expands slightly when equilibrating with the liquid column between the pump unit and the delivery pump unit. Ru. The hose assumes the shape of an hourglass when fully inflated. Both of these properties are 3 limits the possible expansion volume of chamber 307 in the embodiment shown in FIG. The dimensions of the pump unit 303 are larger than those of the delivery pump unit 203 with the same stroke volume. .

In the embodiment shown in FIG. 5, the chamber 407 connected to the feed pump unit is Consists of the inside of a strip-shaped body. The return spring has a radial extension in this example. Ru. In contrast to the embodiment shown in FIG. 3, the end connection portion of bellows cylinder 420 is The bellows 420 is firmly connected to the horizontal portion of the element, which allows the bellows 420 to remain in its unloaded state. Prevents it from taking on the hourglass shape. Therefore, the bellows in its expanded state It takes the form of a balloon. The springs in the embodiment of FIG. It consists of two rubber plates that intersect.

This example shows that the hose and spring can be manufactured as a single structure. This is advantageous from a manufacturing standpoint. Naturally, the return spring has more than two rubber plates. It can consist of

As mentioned above, the spring is in principle connected to the feed pump unit and delivery pump unit. balance exclusively with the pressure created by the hydraulic fluid column in the hydraulic line between the this is Otherwise the depth of the well will be large due to the large spring force to be overcome. It becomes increasingly important.

The return spring in this embodiment is preferably a frictionless spring made of beryllium. It consists of a spring 528. The spring has a hose-like body 52 along most of its length. 1 and the end of the spring reaches the inner wall of the housing 508. these The ends of the guide plates 532 on the housing are guided by a radially protruding pair of guide plates 532, and one of the guide plate pairs The plate is shown in FIG. When chamber 507 expands, the spring receives only The deformation of is a decrease in its curvature, so that the spring ends are guided by each pair of The plate 532 slides against the housing wall. Spring for deformation The resistance of Pumping is effected by a force slightly in excess of tension.

A plurality of leaf springs 528 can be arranged around the hose-like body 521, and in this case, the does not significantly affect the possible stroke volume, in which case the hose is inelastic but flexible. Advantageously, the hose-like body can be made from a resistant material and thus exhibits resistance to expansion. do not have.

In the embodiment shown in Figures 3-6, the delivery pump unit is sized for a single depth. Although the law stipulates that the pump unit shown in FIG. Can be used at different depths by replacing with other springs with different characteristics.

FIG. 7 shows a base for drilling holes of unknown depth when manufacturing a pump according to the invention. A spring device which can be used with particular advantage in conjunction with the low cylinder 7 is indicated generally at 9. . The spring device 9 includes a spring housing 901. The ring consists of a cylindrical body with a closed bottom and an open top with a thread. 7 A guide pin 902 extends vertically upward from the center of the bottom of the housing. A guide tube 903 is slidably guided on 2. The upper end of the guide tube It is connected to the bottom of the bellows cylinder 7.

The guide tube has a radial annular flange 904 at its lower end. guide tube A spacer ring 905 is placed between the lower end of the housing and the bottom of the housing. A washer 906 is placed. The cup spring is an annular A desired pretension is created in the lunge 904. Bevel washers and strips used By appropriately selecting the number of pacer rings and depositing the bevel washers appropriately, It will be appreciated that the pretensioning force can be varied within a relatively wide range. Housing 9 The open upper end of 01 can pass through the guide pin 902 and guide tube 903 It is closed by a plug 907 having a hole. Inside the spring housing It is sealed to the surroundings by bellows seal 908 and is also sealed to the underside of plug 907. An elastic buffer ring 909 is arranged. A guide tube is placed above the guide pin 902. The space created by 903 is vented in a suitable manner. That is, this space For example, the base communicates with the inside of the housing 901 through a channel provided in the guide pin. Cheating.

One important advantage of the embodiment shown in FIG. 7 is that the guide pin 902 and guide tube The movement of the bottom surface of the bellows cylinder 7 is accurately guided by the tab 903. This results in bellows cylinders with long operating strokes, e.g. roller diaphragm type. A bellows cylinder can be used, which means that in order to obtain a sufficiently large volumetric flow rate, This is particularly important in the case of drilled holes of very small diameter. spring housing and guide tubes are sealed to the surroundings and are therefore made of non-stainless steel materials. springs and bellow guide means can be manufactured from Time-maintenance lubricants remain active for long periods of time, reducing the effects of friction during operation. becomes very small.

This occurs in a spring packet due to the illustrated configuration. The pretension force can be reduced by loosening the plug 907 slightly. However, bellow The cylinder 7 can move the upper end of the guide tube 903 upward to a corresponding extent. It shall be possible to do so. The housing is configured to be vertically displaceable, and the housing and plug are connected to each other. relatively large axial movement of the plug with respect to the housing This facility can be used to fine-tune the pretension by enabling . The pretension force can be easily changed for different depths by using the Verebire Washer. can be converted into Furthermore, the package or assembly of the above-mentioned ververe washer The coil springs can be shorter than the corresponding bias coil springs, which is important from a handling perspective. This is an important advantage. Finally, the pub cage of the Verebile washer of the present invention is protection from the elements, i.e. from often aggressive well water, and therefore has a long service life. This is an important contribution in the intended field of use of the present invention.

Many modifications are possible within the scope of the invention. Therefore, the scope of the present invention is limited solely to the claims below. limited by the range of

FIG.6 FIG.7 Tagaki Ill Investigation Report

Claims (10)

[Claims] 1. A pumping device intended especially for lifting water from deep wells and placed at the surface of the earth. The installed feed pump unit (2) sends power and motion to the pump unit (3). ), and during the operating stroke of the pump device, water passes through the pressure valve (10) to the delivery pump unit. The water is raised through the sending vibrator (5) connected to the knit (3) and released during the return process. is passed through the well water inlet pipe connected to the delivery pump unit via the suction valve (11). Feed pump unit A compressible and inflatable chamber (6) incorporated in the knit (2) is connected to the delivery pump unit. A hydraulic line ( 4), the two chambers (6, 7) form a closed hydraulic system, A return spring is installed to support the compression of the chamber (7) of the delivery pump unit during the return stroke. A pump device characterized in that it is provided with a plug (9). 2. The return spring (9) absorbs the weight created by the liquid column in the hydraulic line (4). Claim 1 characterized in that it has a pretension force (Fo) that is balanced with the pump equipment. 3. The pretension force Fo of the return spring (9) is determined by the following formula Fo=ρ・g・(h4−hb )・A7 Here, ρ = density of liquid g = gravitational acceleration h4 = height of hydraulic line hb = level difference between the bottom of the chamber of the delivery pump unit and the water level of the well A7 = Claim characterized in that it is determined by the bottom area of the chamber of the delivery pump unit. The pump device according to item 1. 4. The chambers (207, 307) of the delivery pump unit (203, 303) are exclusively for radiation. Claim 3, characterized in that it consists of a bellows cylinder that can be expanded in a direction. pump equipment. 5. The bellows cylinders (220, 320) are made of flexible material, preferably reinforced rubber material It consists of a hose-like body (221, 321) made of 25, 324, 325) are in the no-load state of the bellows cylinder, that is, when the bellows cylinder is larger than the diameter of the main part of the hose-like body when loaded exclusively by the liquid column of the hydraulic line. plate-shaped holder elements (222, 223) having a large diameter and protruding outward from the housing; , 322, 323), and the main portion of the hose-like body (221, 321) is in contact with the end face of the holder element in the no-load state of the bellows cylinder and has a hose-like shape. End connecting parts (226, 227, 326, 327) extending at right angles to the main body part ) to said end part, and the return spring of the chamber of the delivery pump unit is connected to said end part by Consisting of a rubber spring (228) firmly connected to a base-like body (221) The pump device according to claim 4, characterized in that: 6. The rubber springs are uniformly distributed around the circumference of the hose-like body and consisting of a rubber plate extending along the entire length of the part (221) or with an extension smaller than the circumference of the hose-like body in the state and distributed perpendicular to the circumference as claimed in claim 5, characterized in that it consists of horizontally arranged bands of pump equipment. 7. The return spring of the chamber (307) of the delivery pump unit is connected to the hose-like body (321). ) and the side walls (308) of the delivery pump unit (303). and a spring (328) firmly connected to the hose-like body. A pump device according to claim 5. 8. The return spring of the chamber (407) of the delivery pump unit is connected to the hose-like body (421). ) consists of a spring plate (428) extending diametrically from one side to the other; are firmly connected to the inner wall of the hose-like body, and these plates (428) are manufactured as one piece. Claims characterized in that the hose-like body is 7. The pump device according to item 7. 9. The return spring of the chamber (507) of the delivery bomb unit is preferably made of rubber material. between the bellows cylinder (521) and the inner wall of the housing (508). consisting of a crescent-shaped leaf spring extending radially at the end of said spring. is in contact with the inner wall and is movable in the axial direction with respect to the inner wall, and the bellows series is in an unloaded state. The holder (521) has an hourglass shape in the space between the holder elements (522, 523). The leaf spring is firmly connected to the bellows cylinder through its hourglass-shaped portion. 5. The pump device according to claim 4, characterized in that: 10. The return spring (9) is located in the spring housing (901). It consists of a pile of Leville washers (906), and the Bele pile washer is a pile of Leville washers (906). By varying the number of springs and with the help of spacer plates (905) the height of the pile is increased. The pretension can be changed by changing the height of the bellows cylinder (7). Claims characterized in that the invention is configured to press the connected member (903). 3. The pump device according to item 3.