A deep well pump shaft seal water leakage automatic adjusting device

Abstract

The application discloses a kind of deep well pump shaft seal water leakage amount automatic adjusting device of water and electricity engineering technical field, including support seat, deep well pump transmission shaft being set in support seat, observation opening being opened in support seat, adjusting assembly being set on support seat and deep well pump transmission shaft, power component being set in support seat and monitoring component being set on support seat, the application is leaked from the position of coil in the process of running, and water is collected by collecting tank and then discharged after flowing through flowmeter by drain pipe, when the flow measured by flowmeter is greater than or less than the set flow range, or the temperature sensor monitors that the temperature of shaft seal position is suddenly high or the temperature is relatively low, control adjusting assembly moves downward or upward to control flow, to realize deep well pump shaft seal water leakage amount automatic adjustment, ensure deep well pump safe and stable operation.

Description

Technical Field

[0001] This invention relates to the technical field of hydropower engineering, and in particular to an automatic adjustment device for the leakage of shaft seals in deep well pumps. Background Technology

[0002] Large underground hydroelectric power plants are located below the downstream water level, so maintenance sump pits and leakage sump pits are installed within the power plant. Maintenance sump pits collect drainage water from the unit during maintenance, while leakage sump pits collect leakage water from various parts of the power plant. Each sump pit is equipped with a drainage system, and the water in the sump pits is forcibly discharged downstream by a long-shaft deep well pump. The shaft seal of the long-shaft deep well pump uses a packing seal. During annual maintenance, the old packing seal is removed and replaced with a new one. Then, the packing is adjusted by adjusting the shaft seal gland to allow some water flow for lubrication, ensuring that the drive shaft does not dry-rub. However, the packing seal experiences wear during deep well pump operation. As operating time increases, the leakage at the shaft seal gradually increases, requiring frequent adjustments to the leakage rate, which is time-consuming and labor-intensive. If a large leakage is not detected, there is a risk of flooding the drainage pump house. Summary of the Invention

[0003] In view of the problem that the leakage at the shaft seal gradually increases with the increase of operating time, and the leakage needs to be adjusted frequently, the present invention is proposed.

[0004] Therefore, the purpose of this invention is to provide an automatic adjustment device for the leakage of shaft seal water in a deep well pump, the purpose of which is to automatically adjust the leakage of the device during the operation of the deep well pump.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a support base, a deep well pump drive shaft disposed in the support base, an observation port opened on the support base, an adjustment component disposed on the support base and the deep well pump drive shaft, a power component disposed in the support base, and a monitoring component disposed on the support base. The monitoring component monitors the leakage of the device and the temperature in the support base, thereby controlling the adjustment component to move through the power component, automatically adjusting the leakage of the device, and ensuring the operation of the device.

[0006] As a preferred embodiment of the automatic adjustment device for the leakage of the shaft seal of the deep well pump described in this invention, the support base includes a base, a water collection tank disposed in the base, and a drain pipe disposed at the lower part of the water collection tank.

[0007] As a preferred embodiment of the automatic adjustment device for the leakage of the shaft seal of the deep well pump described in this invention, the adjustment component includes a packing ring disposed in the base, a pressure cap disposed on the packing ring, a clamping member disposed on the pressure cap, a transmission member disposed on the clamping member, and a connecting member disposed on the transmission member.

[0008] As a preferred embodiment of the automatic adjustment device for the leakage of the shaft seal of the deep well pump described in this invention, the clamping component includes a first adjusting screw disposed at one end of the pressure plate, a second adjusting screw disposed at the other end of the pressure plate, a first transmission gear disposed at the top end of the first adjusting screw, and a second transmission gear disposed at the top end of the second adjusting screw.

[0009] In a preferred embodiment of the automatic adjustment device for the leakage of the shaft seal of the deep well pump described in this invention, the threads of the first adjusting screw and the second adjusting screw have opposite directions.

[0010] As a preferred embodiment of the automatic adjustment device for the leakage of the shaft seal of the deep well pump described in this invention, the heights of the transmission teeth on the first transmission gear and the second transmission gear do not overlap.

[0011] As a preferred embodiment of the automatic adjustment device for leakage of deep well pump shaft seal of the present invention, the transmission component includes a transmission cover rotatably disposed on the transmission shaft of the deep well pump, a transmission ring disposed below the transmission cover via the connecting member, a first tooth groove disposed on the inner wall of the transmission cover and cooperating with the second transmission gear, and a second tooth groove disposed on the inner wall of the transmission ring and cooperating with the first transmission gear.

[0012] As a preferred embodiment of the automatic adjustment device for the leakage of the shaft seal of the deep well pump described in this invention, the connecting member includes a connecting bolt disposed on the transmission cover, the connecting bolt being movably connected to the transmission cover, a washer disposed on the connecting bolt and the transmission cover, and a connecting nut disposed at the lower end of the connecting bolt.

[0013] As a preferred embodiment of the automatic adjustment device for leakage of deep well pump shaft seal described in this invention, the power component includes a motor disposed in the base, a connecting shaft disposed at the output end of the motor, an output wheel disposed on the connecting shaft, a mounting groove opened on the outer wall of the transmission ring, and a transmission belt disposed on the output wheel and the mounting groove.

[0014] As a preferred embodiment of the automatic adjustment device for the leakage of the shaft seal of the deep well pump described in this invention, the monitoring component includes a controller disposed on the base, a temperature sensor disposed on the inner wall of the base, and a flow meter disposed on the drain pipe.

[0015] The beneficial effects of this invention are as follows: During the operation of the deep well pump, water leaks upwards layer by layer from the packing. The leaked water is collected in a water collection tank and then discharged through a drain pipe and a flow meter. When the flow rate measured by the flow meter is greater than or less than the set flow range, or when the temperature sensor detects a sudden increase or decrease in the temperature at the shaft seal, the adjustment component is controlled to move downwards or upwards to control the flow rate. This achieves automatic adjustment of the shaft seal leakage of the deep well pump, ensuring the safe and stable operation of the deep well pump. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0017] Figure 1 This is a schematic diagram of the overall structure of the automatic adjustment device for the leakage of the shaft seal of a deep well pump according to the present invention.

[0018] Figure 2 This is a cross-sectional schematic diagram of the adjustment component of the automatic adjustment device for the leakage of the shaft seal of a deep well pump according to the present invention.

[0019] Figure 3 This is a cross-sectional structural diagram of the base of the automatic adjustment device for the leakage of the shaft seal of a deep well pump according to the present invention.

[0020] Figure 4 This is a schematic diagram of the power component of the automatic adjustment device for the leakage of the shaft seal of a deep well pump according to the present invention.

[0021] Figure 5 This is a bottom view of the transmission ring of the automatic adjustment device for the leakage of the shaft seal of a deep well pump according to the present invention.

[0022] Figure 6 This is a cross-sectional schematic diagram of the transmission cover of the automatic adjustment device for the leakage of the shaft seal of a deep well pump according to the present invention.

[0023] Figure 7 This is a schematic diagram of the transmission cover of the automatic adjustment device for the leakage of the shaft seal of a deep well pump according to the present invention.

[0024] Figure 8 This is a schematic diagram of the transmission ring of the automatic adjustment device for the leakage of the deep well pump shaft seal of the present invention. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0029] Example 1

[0030] Reference Figure 1 - Figure 3 This first embodiment of the invention provides an automatic adjustment device for the leakage of a deep well pump shaft seal. The device includes a support base 100 for supporting and connecting the deep well pump; a deep well pump drive shaft 200 disposed in the support base 100 for power transmission of the deep well pump; an observation port 300 on the support base 100 for observing the state inside the support base 100; an adjustment component 400 disposed on the support base 100 and the deep well pump drive shaft 200 for sealing; a power component 500 disposed in the support base 100 for controlling the sealing degree of the adjustment component 400; and a monitoring component 600 disposed on the support base 100 for monitoring the leakage and internal temperature of the device, thereby controlling the start of the power component 500. By monitoring the leakage and temperature in the support base 100 through the monitoring component 600, the power component 500 controls the movement of the adjustment component 400 to automatically adjust the leakage of the device and ensure its operation.

[0031] The support base 100 includes a base 101 for supporting a water collection tank 102 disposed in the base 101 for collecting leaked water, and a drain pipe 103 disposed at the lower part of the water collection tank 102 for draining water from the drain pipe 103.

[0032] During use, when the deep well pump is running, the monitoring component 600 is activated. At this time, water will leak upwards from the packing 401 layer by layer into the water collection tank 102. The water collection tank 102 will collect the water and drain it through the drain pipe 103. The monitoring component 600 monitors the flow rate of the drain pipe 103 and the temperature in the base 101, and controls the movement of the adjustment component 400 through the power component 500 to regulate the leakage.

[0033] Example 2

[0034] Reference Figure 1 , Figure 2 ,as well as Figure 4 - Figure 8 This is the second embodiment of the present invention, which differs from the first embodiment in that the flow rate is regulated.

[0035] Compared to Embodiment 1, the adjustment assembly 400 further includes a packing 401 disposed in the base 101 for sealing; a pressure cap 402 disposed on the packing 401 for squeezing the packing 401 to control the sealing degree and thereby adjust the leakage; a clamping member 403 disposed on the pressure cap 402 for driving the pressure cap 402 to move up and down to squeeze the packing 401; a transmission member 404 disposed on the clamping member 403 for coordinating the movement of the clamping member 403; and a connecting member 405 disposed on the transmission member 404 for fixing and connecting the transmission member 404.

[0036] The clamping member 403 includes a first adjusting screw 403a disposed at one end of the pressure cover 402, used to rotate together with a second adjusting screw 403b to control the up and down movement of the pressure cover 402; a second adjusting screw 403b disposed at the other end of the pressure cover 402; a first transmission gear 403c disposed at the top of the first adjusting screw 403a, used to drive the first adjusting screw 403a to rotate in conjunction with the transmission member 404; and a second transmission gear 403d disposed at the top of the second adjusting screw 403b, used to drive the second adjusting screw 403b to rotate in conjunction with the transmission member 404.

[0037] The first adjusting screw 403a and the second adjusting screw 403b have opposite thread directions, which can cancel out the force that drives the pressure cap 402 to rotate when the first adjusting screw 403a and the second adjusting screw 403b rotate, so that the contact between the pressure cap 402 and the packing 401 remains stable and the state of the packing 401 is maintained.

[0038] The heights of the transmission teeth on the first transmission gear 403c and the second transmission gear 403d do not overlap to avoid mutual interference during rotation.

[0039] The transmission component 404 includes a transmission cover 404a rotatably mounted on the deep well pump drive shaft 200, used to rotate the first toothed groove 404c; a transmission ring 404b mounted below the transmission cover 404a via a connector 405, used to rotate the second toothed groove 404d; a first toothed groove 404c mounted on the inner wall of the transmission cover 404a that engages with the second transmission gear 403d, used to rotate the second transmission gear 403d; and a second toothed groove 404d mounted on the inner wall of the transmission ring 404b that engages with the first transmission gear 403c, used to rotate the first transmission gear 403c. When the transmission cover 404a rotates, the rotation directions of the first transmission gear 403c and the second transmission gear 403d are opposite, and the first adjusting screw 403a and the second adjusting screw 403b, which rotate in opposite directions, control the pressure cover 402 to move up and down.

[0040] The connector 405 includes a connecting bolt 405a disposed on the transmission cover 404a, the connecting bolt 405a being movably connected to the transmission cover 404a, a washer 405b disposed on the connecting bolt 405a and the transmission cover 404a, and a connecting nut 405c disposed at the lower end of the connecting bolt 405a. The connecting bolt 405a, together with the connecting nut 405c, fixes the transmission cover 404a and the transmission ring 404b. The connecting nut 405c increases friction to prevent loosening.

[0041] The power assembly 500 includes a motor 501 disposed in the base 101 for outputting power, a connecting shaft 502 disposed at the output end of the motor 501 for driving the output wheel 503 to rotate, the output wheel 503 disposed on the connecting shaft 502 for driving the transmission ring 404b to rotate via the transmission belt 505, a mounting groove 504 opened on the outer wall of the transmission ring 404b for mounting the transmission belt 505, and the transmission belt 505 disposed on the output wheel 503 and the mounting groove 504 for transmission.

[0042] During use, when the deep well pump starts, the monitoring component 600 is activated. When the monitoring component 600 detects that the temperature in the base 101 or the water flow rate in the drain pipe 103 does not meet the normal value, the motor 501 starts, driving the output wheel 503 to rotate. At this time, the transmission ring 404b rotates through the output wheel 503, and drives the transmission cover 404a to rotate synchronously through the connector 405. At this time, the first tooth groove 404c and the second tooth groove 404d mesh with the second transmission gear 403d and the first transmission gear 403c respectively. At this time, the rotation directions of the first transmission gear 403c and the second transmission gear 403d are opposite. Since the threads of the first adjusting screw 403a and the second adjusting screw 403b are opposite, the first adjusting screw 403a and the second adjusting screw 403b synchronously adjust the pressure cover 402, driving the pressure cover 402 to move up and down, adjusting the degree of compression on the packing 401, thereby controlling the leakage to a reasonable level.

[0043] The remaining structure is the same as that in Example 1.

[0044] Example 3

[0045] Reference Figure 1 - Figure 3 This is the third embodiment of the present invention, which differs from the second embodiment in that the state of the device is monitored.

[0046] Compared to Embodiment 2, the monitoring component 600 further includes a controller 601 disposed on the base 101 for receiving signals from the temperature sensor 602 and the flow meter 603 to control the start of the motor 501; a temperature sensor 602 disposed on the inner wall of the base 101 for monitoring the temperature in the base 101; and a flow meter 603 disposed on the drain pipe 103 for measuring the speed of water flow in the drain pipe 103.

[0047] During use, assuming that after replacing packing 401, the flow rate monitored by flow meter 603 after starting the pump is 2m³ / h. 3 / h, the leakage range set by controller 601 is 2-3m. 3 / h, when the leakage exceeds or falls below this leakage rate, the flow rate is adjusted to the range by controlling the pressure plate 402 to move down or up. Assuming the shaft seal temperature is 30 degrees when the deep well pump is running normally, if the temperature is 5 degrees lower or 5 degrees higher, the controller 601 will adjust the shaft seal temperature to the normal operating temperature by controlling the pressure plate 402 to move down or up.

[0048] When the flow rate monitored by flow meter 603 is 3.5m³ 3 / h, at this time the controller 601 works, controlling the motor 501 to start and drive the pressure cap 402 to move downwards slowly, so that the pressure cap 402 is pressed tighter, when the flow meter 603 measures a flow rate of 2m³ / h. 3 Stop moving at / h.

[0049] When the flow rate monitored by flow meter 603 is 1.5m³ 3 / h, possibly due to the deep well pump running for too long, the drive shaft 200 of the deep well pump has become slightly hot. At this time, the controller 601 works, controlling the motor 501 to start and drive the pressure plate 402 to move upward slowly, so that the pressure plate 402 is loosened a little. When the flow rate measured by the flow meter 603 is 2m³ / h, 3 Stop moving at / h.

[0050] When the temperature sensor 602 detects that the temperature at the shaft seal position is more than 5 degrees higher, it indicates that the water leakage at the shaft seal position is low and the pressure cap 402 is too tight. At this time, the controller 601 detects that the temperature is too high through the temperature sensor 602 and controls the motor 501 to start and drive the pressure cap 402 to move upward slowly, so that the pressure cap 402 is loosened a little. When the temperature sensor 602 detects that the temperature has returned to the normal temperature, it stops moving.

[0051] When the temperature sensor 602 detects that the temperature at the shaft seal position is more than 5 degrees lower, it indicates that the leakage at the shaft seal position is too high and the pressure cap 402 is too loose. At this time, the controller 601 detects the low temperature through the temperature sensor 602 and controls the motor 501 to start and drive the pressure cap 402 to move downward slowly to make the pressure cap 402 tighter. When the temperature sensor 602 detects that the temperature has returned to the normal temperature, it stops moving.

[0052] The remaining structure is the same as that in Example 2.

[0053] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0054] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automatic adjustment device for the leakage of a deep well pump shaft seal, characterized in that: The device includes a support base (100), a deep well pump drive shaft (200) disposed in the support base (100), an observation port (300) opened on the support base (100), an adjustment component (400) disposed on the support base (100) and the deep well pump drive shaft (200), a power component (500) disposed in the support base (100), and a monitoring component (600) disposed on the support base (100). The monitoring component (600) detects the leakage of the device and the temperature in the support base (100), thereby controlling the adjustment component (400) to move through the power component (500), automatically adjusting the leakage of the device, and ensuring the operation of the device. The support base (100) includes a base (101), a water collection tank (102) disposed in the base (101), and a drain pipe (103) disposed at the lower part of the water collection tank (102). The adjustment assembly (400) includes a packing (401) disposed in the base (101), a pressure cap (402) disposed on the packing (401), a clamping member (403) disposed on the pressure cap (402), a transmission member (404) disposed on the clamping member (403), and a connecting member (405) disposed on the transmission member (404). The clamping member (403) includes a first adjusting screw (403a) disposed at one end of the pressure cover (402), a second adjusting screw (403b) disposed at the other end of the pressure cover (402), a first transmission gear (403c) disposed at the top end of the first adjusting screw (403a), and a second transmission gear (403d) disposed at the top end of the second adjusting screw (403b). The first adjusting screw (403a) and the second adjusting screw (403b) have opposite thread directions; The heights of the transmission teeth on the first transmission gear (403c) and the second transmission gear (403d) do not overlap; The transmission component (404) includes a transmission cover (404a) rotatably mounted on the deep well pump transmission shaft (200), a transmission ring (404b) disposed below the transmission cover (404a) via the connector (405), a first tooth groove (404c) disposed on the inner wall of the transmission cover (404a) and engaging with the second transmission gear (403d), and a second tooth groove (404d) disposed on the inner wall of the transmission ring (404b) and engaging with the first transmission gear (403c). The connector (405) includes a connecting bolt (405a) disposed on the transmission cover (404a), the connecting bolt (405a) being movably connected to the transmission cover (404a), a washer (405b) disposed on the connecting bolt (405a) and the transmission cover (404a), and a connecting nut (405c) disposed at the lower end of the connecting bolt (405a).

2. The automatic adjustment device for leakage of deep well pump shaft seal as described in claim 1, characterized in that: The power assembly (500) includes a motor (501) disposed in the base (101), a connecting shaft (502) disposed at the output end of the motor (501), an output wheel (503) disposed on the connecting shaft (502), a mounting groove (504) opened on the outer wall of the transmission ring (404b), and a transmission belt (505) disposed on the output wheel (503) and the mounting groove (504).

3. The automatic adjustment device for leakage of deep well pump shaft seal as described in claim 1, characterized in that: The monitoring component (600) includes a controller (601) disposed on the base (101), a temperature sensor (602) disposed on the inner wall of the base (101), and a flow meter (603) disposed on the drain pipe (103).

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