CN212674266U - Weighing device - Google Patents

Abstract

The utility model provides a weighing device, this weighing device includes: a base; the cylinder body is arranged on the base and is provided with an inlet, an outlet and a weighing cavity, and the inlet and the outlet are respectively communicated with the weighing cavity; the weighing piece is used for weighing the cylinder body; the piston assembly is movably arranged in the weighing cavity, the outer periphery of the piston assembly is matched with the inner wall of the weighing cavity, and the piston assembly is used for pushing the weighed object out of the outlet; and the driving assembly is in driving connection with the piston assembly and is used for driving the piston assembly to move in the weighing cavity. Through the technical scheme that this application provided, can solve the inaccurate problem of weighing device measurement among the prior art.

Description

Weighing device

Technical Field

The utility model relates to a technical field is measured to the oil, particularly, relates to a weighing device.

Background

The weighing instrument is generally a device which converts a weighing sensor signal into a weight digital display and can store and count the weight data, is usually used for automatic batching and weighing in industrial and agricultural production and can effectively improve the production efficiency.

The weighing technology is also applied to a certain range in the oil field production metering, the metering of the oil well yield is an important work in the oil field production management, the oil well yield is accurately and timely metered, and the weighing method has important guiding significance for mastering the oil reservoir condition and formulating the production scheme.

The existing weighing device in oil field production is generally a tipping bucket type weighing device, and crude oil is sent into a tipping bucket for weighing so as to obtain the weight of the crude oil. However, the metering accuracy of the device is affected by factors such as crude oil viscosity and gas production in the operation process, and the crude oil is easy to adhere to the inner wall of the tipping bucket when the crude oil viscosity is high. This can cause inaccurate measurements and affect the detection of crude oil.

SUMMERY OF THE UTILITY MODEL

The utility model provides a weighing device to solve the unsafe problem of weighing device measurement among the prior art.

The utility model provides a weighing device, weighing device includes: a base; the cylinder body is arranged on the base and is provided with an inlet, an outlet and a weighing cavity, and the inlet and the outlet are respectively communicated with the weighing cavity; the weighing piece is used for weighing the cylinder body; the piston assembly is movably arranged in the weighing cavity, the outer periphery of the piston assembly is matched with the inner wall of the weighing cavity, and the piston assembly is used for pushing the weighed object out of the outlet; and the driving assembly is in driving connection with the piston assembly and is used for driving the piston assembly to move in the weighing cavity.

Furthermore, a first end cover and a second end cover are respectively arranged at two ends of the cylinder body, an inlet is formed in the first end cover, an outlet is formed in the second end cover, a communication hole is formed in the piston assembly and corresponds to the inlet, a one-way valve is arranged in the communication hole, the piston assembly divides the weighing cavity into a first cavity and a second cavity, and the communication hole is used for communicating the first cavity with the second cavity.

Furthermore, a first piston hole is formed in the first end cover, the piston assembly comprises a piston and a piston rod, the piston is arranged at one end of the piston rod, and the other end of the piston rod penetrates out of the first piston hole and is connected with the driving assembly.

Further, the periphery cover of piston is equipped with first guide ring and first sealing ring, and first guide ring and first sealing ring set up side by side along the axis direction of piston.

Furthermore, a second sealing ring, a copper sleeve and a clamping spring are sequentially arranged in the first piston hole from the inlet to the outlet.

Further, the weighing device also comprises a supporting sleeve, the driving assembly is at least partially arranged in the supporting sleeve, the supporting sleeve is communicated with the cylinder body, and the piston rod penetrates out of the first piston hole and is positioned in the supporting sleeve.

Further, the weighing device further comprises a mounting ring, the mounting ring is located between the supporting sleeve and the cylinder body, the supporting sleeve is connected with the cylinder body through the mounting ring, the mounting ring is provided with a second piston hole, a dust ring and a second guide ring are arranged in the second piston hole, and the piston rod sequentially penetrates through the first piston hole and the second piston hole and is located in the supporting sleeve.

Further, the drive assembly includes: a motor having a drive end; the speed reducer is connected with the driving end; one end of the transmission assembly is connected with the speed reducer, and the other end of the transmission assembly is connected with the piston assembly.

Further, the bottom of the first end cover is provided with a first sewage draining port, the bottom of the second end cover is provided with a second sewage draining port, and the first sewage draining port and the second sewage draining port are communicated with the weighing cavity respectively.

Further, the weighing device still includes: a moisture meter disposed at the outlet; and the pressure measuring piece is arranged at the inlet and/or the outlet.

Use the technical scheme of the utility model, this weighing device includes base, cylinder body, weighing member, piston assembly and drive assembly. The driving assembly drives the piston assembly to move in the cylinder body, and the weighing piece is used for weighing and measuring the weighed piece in the cylinder body. Through the device that this application provided, can transport crude oil to the cylinder body through the import to measure through the piece of weighing, release crude oil from the cylinder body through piston assembly after the measurement is accomplished, because piston assembly's outer peripheral edges and the intracavity wall adaptation of weighing, can reduce crude oil like this and remain in the cylinder body as far as possible, can empty the chamber of weighing for next weighing, and then can guarantee the accuracy of measurement at every turn.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a weighing apparatus provided according to an embodiment of the present invention;

fig. 2 is a schematic view of a weighing apparatus according to an embodiment of the present invention with a piston at the right end;

fig. 3 shows a schematic view of a weighing apparatus provided according to an embodiment of the present invention with the piston at the left end;

FIG. 4 shows a schematic structural view of the first end cap of FIG. 1;

FIG. 5 shows a schematic structural view of the second end cap of FIG. 1;

FIG. 6 shows a schematic structural view of the piston assembly of FIG. 1;

fig. 7 shows a schematic view of the mounting ring of fig. 1.

Wherein the figures include the following reference numerals:

10. a base;

20. a cylinder body; 21. an inlet; 22. an outlet; 23. a weighing chamber; 24. a first end cap; 241. a first piston bore; 242. a first drain port; 25. a second end cap; 251. a second sewage draining outlet;

30. weighing the parts;

40. a piston assembly; 40a, a communication hole; 41. a piston; 42. a piston rod;

50. a drive assembly; 51. a motor; 52. a speed reducer;

60. a support sleeve;

70. a mounting ring; 71. a second piston bore;

81. a water content meter; 82. measuring and pressing parts;

91. a one-way valve; 92. a first guide ring; 93. a first seal ring; 94. a second seal ring; 95. a copper sleeve; 96. a clamp spring; 97. a dust ring; 98. a second guide ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 3, an embodiment of the present application provides a weighing apparatus including: a base 10, a cylinder 20, a weighing member 30, a piston assembly 40 and a drive assembly 50. Wherein, cylinder body 20 sets up on base 10, and cylinder body 20 has import 21, export 22 and weighs chamber 23, and import 21 and export 22 communicate with weighing chamber 23 respectively, are used for holding the thing by weighing in the weighing chamber 23. The weighing member 30 is used for weighing the cylinder body 20, and the weighing member 30 may be a weighing sensor, and in order to ensure the measurement accuracy, a plurality of weighing sensors may be placed at the bottom of the cylinder body 20. The piston assembly 40 is movably arranged in the weighing cavity 23, and the outer periphery of the piston assembly 40 is matched with the inner wall of the weighing cavity 23, so that crude oil attached to the inner wall of the cylinder body 20 can be cleaned, and a weighed object can be pushed out of the outlet 22 by the piston assembly 40. The driving assembly 50 is in driving connection with the piston assembly 40, and the driving assembly 50 is used for driving the piston assembly 40 to move in the weighing cavity 23.

By the device provided by the application, the weighing device comprises a base 10, a cylinder 20, a weighing piece 30, a piston assembly 40 and a driving assembly 50. The driving assembly 50 drives the piston assembly 40 to move in the cylinder 20, and the weighing member 30 is used for weighing and measuring the weighed member in the cylinder 20. Through the device that this application provided, can transport crude oil to cylinder body 20 in through import 21, and measure through weighing piece 30, release crude oil from cylinder body 20 in through piston assembly 40 after the measurement is accomplished, because piston assembly 40's outer peripheral edges and 23 inner walls looks adaptations of weighing chamber, can reduce crude oil residue in cylinder body 20 as far as like this, and empty weighing chamber 23 for weighing next time, and then can guarantee the accuracy of measuring at every turn, provide data guarantee for oil field production.

As shown in fig. 4 to 6, in particular, a first end cap 24 and a second end cap 25 are respectively disposed at two ends of the cylinder 20, an inlet 21 is disposed on the first end cap 24, an outlet 22 is disposed on the second end cap 25, a communication hole 40a is disposed on the piston assembly 40, the communication hole 40a is disposed corresponding to the inlet 21, a check valve 91 is disposed in the communication hole 40a, the piston assembly 40 divides the weighing chamber 23 into a first chamber and a second chamber, and the communication hole 40a is used for communicating the first chamber and the second chamber. By providing the first end cap 24 and the second end cap 25, the mounting of the components within the cylinder 20 may be facilitated. The piston assembly 40 is provided with a communication hole 40a, and a check valve 91 is arranged in the hole, so that the crude oil in the cylinder 20 can only flow in a preset direction during the movement of the piston assembly 40, and the crude oil can be completely pushed out from the outlet 22.

The first end cap 24 is provided with a first piston hole 241, the piston assembly 40 includes a piston 41 and a piston rod 42, the piston 41 is disposed at one end of the piston rod 42, and the other end of the piston rod 42 is extended out of the first piston hole 241 and connected to the driving assembly 50. The drive assembly 50 is disposed outside the cylinder 20 to ensure proper operation of the piston assembly 40. In this embodiment, the communication hole 40a and the check valve 91 are both located on the piston 41, so that after the piston 41 retreats from the inlet 21 to the outlet 22, new crude oil can be injected into the cylinder 20, and when the piston 41 retreats from the outlet 22 to the inlet 21, the crude oil can flow to the other side of the piston 41 through the check valve 91, and then the piston 41 moves from the inlet 21 to the outlet 22 to push out the new crude oil from the outlet 22. Through the structure, the operation of entering and exiting crude oil can be closely matched with the movement of the piston 41, and the weighing efficiency is improved.

In this embodiment, the periphery of the piston 41 is sleeved with a first guide ring 92 and a first seal ring 93, and the first guide ring 92 and the first seal ring 93 are arranged side by side along the axial direction of the piston 41. This allows the piston 41 to be guided by the first guide ring 92, so that the piston 41 can be smoothly moved in the cylinder 20. The first cavity and the second cavity can be separated and sealed by the first sealing ring 93, and crude oil is prevented from adhering to the inner wall of the cylinder body 20 as much as possible.

The second sealing ring 94, the copper bush 95 and the snap spring 96 are sequentially arranged in the first piston hole 241 from the inlet 21 to the outlet 22. The piston rod 42 and the first end cap 24 can be connected in a sealed sliding manner by the second sealing ring 94, and the copper sleeve 95 can be sealed by the copper sleeve 95, and the copper sleeve 95 can be pressed in the first piston hole 241 by the clamp spring 96. The second sealing ring 94, the copper sleeve 95 and the clamp spring 96 are arranged, so that the sealing performance of the first piston hole 241 can be further improved, and crude oil leakage is avoided.

Specifically, the weighing apparatus further includes a support sleeve 60, the driving assembly 50 is at least partially disposed in the support sleeve 60, the support sleeve 60 is communicated with the cylinder 20, and the piston rod 42 is extended out of the first piston hole 241 and is disposed in the support sleeve 60. The driving assembly 50 can be protected and shielded by the supporting sleeve 60.

As shown in fig. 7, the weighing apparatus further includes a mounting ring 70, the mounting ring 70 is located between the support sleeve 60 and the cylinder body 20, the support sleeve 60 is connected to the cylinder body 20 through the mounting ring 70, the mounting ring 70 has a second piston hole 71, a dust ring 97 and a second guide ring 98 are disposed in the second piston hole 71, and the piston rod 42 sequentially passes through the first piston hole 241 and the second piston hole 71 and is located in the support sleeve 60. Securing the support sleeve 60 with the cylinder block 20 is facilitated by the provision of the mounting ring 70. The provision of the dust ring 97 in the second piston bore 71 prevents impurities from entering the cylinder 20, and the provision of the second guide ring 98 reduces wear of the piston rod 42 relative to the mounting ring 70, and increases the service life.

Wherein, this drive assembly 50 includes: a motor 51, a reducer 52 and a transmission assembly. The motor 51 has a driving end, the reducer 52 is connected to the driving end, one end of the transmission assembly is connected to the reducer 52, and the other end of the transmission assembly is connected to the piston assembly 40. The motor 51 drives the piston assembly 40 to move through the transmission assembly. Specifically, the motor 51 may be a servo motor to improve the control accuracy. The transmission assembly may utilize a gear assembly, a lead screw assembly, to cooperate to drive the movement of the piston assembly 40.

In this embodiment, the first end cover 24 is provided with a first sewage draining outlet 242 at the bottom, the second end cover 25 is provided with a second sewage draining outlet 251 at the bottom, and the first sewage draining outlet 242 and the second sewage draining outlet 251 are respectively communicated with the weighing cavity 23. By providing the first drain 242 and the second drain 251, the inside of the cylinder 20 can be easily cleaned. The drain can be plugged by a plug when not in use.

Wherein, this weighing device still includes: a moisture meter 81 and a pressure gauge 82. A moisture meter 81 is provided at the outlet 22, and the water content in the oil can be measured by providing the moisture meter 81. The pressure sensing member 82 may be disposed at the inlet 21 and/or the outlet 22 to perform pressure sensing on the crude oil.

Specifically, import pipeline and export pipeline are connected with respectively in import 21 and export 22 punishment, all be provided with on import pipeline and the export pipeline to screwed joint, three way connection, manometer, hose, oil pipe and pipe clamp, three port of three way connection respectively with screwed joint, manometer, hose connection, the one end and the hose connection of oil pipe, the other end of oil pipe is fixed on base 10 through the pipe clamp, import pipeline to screwed joint and import 21 intercommunication, export pipeline to screwed joint and export 22 intercommunication. Check valves may also be provided in the inlet 21 and outlet 22. When this application device is used for the weighing device as oil field individual well measurement, can show the inside pressure of cylinder body in real time through the manometer, can eliminate the influence that pipeline stress brought through setting up the hose.

When the device is used, liquid to be weighed is conveyed into the cylinder body 20 from an inlet pipeline and enters the cavity on the right side of the piston 41, and after the weighing piece 30 is stable in measured value, the piston 41 moves left and right under the driving action of the driving assembly 50 so as to discharge all the liquid in the cylinder body 20, and one-time weighing operation can be completed. The weight of the liquid in the cylinder 20 is displayed in real time, the weight difference of the liquid in the cylinder 20 is calculated by using the weight difference before and after each taking and discharging, and the yield is calculated by combining the time difference. In the operation of weighing, need not artifical and get repeatedly and put and wait to weigh the article, whole weigh easy operation, convenient, save time, laborsaving. In addition, the present application is suitable for the metering operation of the single well in the oil field, when the metering operation is performed, an upper limit value can be set on the weighing member 30, when the measured value of the weighing member 30 reaches the upper limit value, the driving assembly 50 can drive the piston 41 to perform a reciprocating motion, in the reciprocating motion, the piston 41 is firstly pushed to the rightmost side of the cylinder 20 from the initial position and then pulled to the left to the initial position, during the metering operation, the oil produced in the oil field continuously enters the cavity on the right side of the piston 41 from the inlet pipeline, wherein the gas in the crude oil is directly discharged through the one-way valve 91 and the outlet 22, when the measured value of the weighing member 30 reaches the upper limit value, the piston 41 firstly moves to the right under the action of the driving assembly 50 to discharge the crude oil on the right side of the piston 41 from the outlet pipeline, then the piston 41 moves to the initial position to the left and enables the oil on the left side of the piston, when the piston 41 returns to the initial position, the time T1 and the measured value W1 of the weighing element 30 are recorded, when the measured value of the weighing element 30 reaches the upper limit value again, the time T2 is recorded, the measured value of the weighing element 30 is W2, and the oil field single well production per unit time is obtained as follows: (W2-W1)/(T2-T1).

The device of this application has carried out the field test at shale oil-well district after the indoor experiment, and experimental respond well, the device operation is reliable, and measurement error can be accurate, carry out online measurement to single well production liquid reliably within 5%, has alleviateed on-the-spot staff's inspection well measurement work load greatly, has satisfied the measurement demand in oil field.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A weighing apparatus, characterized in that the weighing apparatus comprises:

a base (10);

the cylinder body (20) is arranged on the base (10), the cylinder body (20) is provided with an inlet (21), an outlet (22) and a weighing cavity (23), and the inlet (21) and the outlet (22) are respectively communicated with the weighing cavity (23);

-a weighing member (30) for weighing the cylinder (20);

a piston assembly (40) movably arranged in the weighing cavity (23), wherein the outer periphery of the piston assembly (40) is matched with the inner wall of the weighing cavity (23), and the piston assembly (40) is used for pushing the weighed object out of the outlet (22);

the driving assembly (50) is in driving connection with the piston assembly (40), and the driving assembly (50) is used for driving the piston assembly (40) to move in the weighing cavity (23).

2. The weighing device according to claim 1, wherein a first end cover (24) and a second end cover (25) are respectively arranged at two ends of the cylinder body (20), an inlet (21) is arranged on the first end cover (24), an outlet (22) is arranged on the second end cover (25), a communication hole (40a) is arranged on the piston assembly (40), the communication hole (40a) is arranged corresponding to the inlet (21), a one-way valve (91) is arranged in the communication hole (40a), the piston assembly (40) divides the weighing cavity (23) into a first cavity and a second cavity, and the communication hole (40a) is used for communicating the first cavity and the second cavity.

3. The weighing apparatus according to claim 2, wherein the first end cap (24) is provided with a first piston hole (241), the piston assembly (40) comprises a piston (41) and a piston rod (42), the piston (41) is arranged at one end of the piston rod (42), and the other end of the piston rod (42) passes through the first piston hole (241) and is connected with the driving assembly (50).

4. A weighing device according to claim 3, characterised in that the peripheral sleeve of the piston (41) is provided with a first guide ring (92) and a first sealing ring (93), the first guide ring (92) and the first sealing ring (93) being arranged side by side in the direction of the axis of the piston (41).

5. The weighing device according to claim 3, wherein a second sealing ring (94), a copper bush (95) and a snap spring (96) are arranged in the first piston hole (241) from the inlet (21) to the outlet (22) side in sequence.

6. The weighing apparatus according to claim 3, further comprising a support sleeve (60), the drive assembly (50) being at least partially disposed within the support sleeve (60), the support sleeve (60) being in communication with the cylinder body (20), the piston rod (42) passing out of the first piston bore (241) and being located within the support sleeve (60).

7. The weighing apparatus according to claim 6, further comprising a mounting ring (70), the mounting ring (70) being located between the support sleeve (60) and the cylinder body (20), the support sleeve (60) being connected to the cylinder body (20) through the mounting ring (70), the mounting ring (70) having a second piston bore (71), a dust ring (97) and a second guide ring (98) being provided in the second piston bore (71), the piston rod (42) passing through the first piston bore (241) and the second piston bore (71) in sequence and being located in the support sleeve (60).

8. The weighing device according to claim 1, wherein said drive assembly (50) comprises:

a motor (51) having a drive end;

a speed reducer (52) connected to the drive end;

one end of the transmission assembly is connected with the speed reducer (52), and the other end of the transmission assembly is connected with the piston assembly (40).

9. The weighing device according to claim 2, wherein the bottom of the first end cover (24) is provided with a first drain outlet (242), the bottom of the second end cover (25) is provided with a second drain outlet (251), and the first drain outlet (242) and the second drain outlet (251) are respectively communicated with the weighing cavity (23).

10. The weighing apparatus of claim 1, further comprising:

a water cut meter (81) disposed at the outlet (22);

a pressure measuring element (82) arranged at the inlet (21) and/or the outlet (22).

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