CN219391468U - Liquid sampling device - Google Patents

Abstract

The present utility model relates to a liquid sampling device. The liquid sampling device comprises a vacuum pump, a sampling bottle, a sampling tube and an exhaust tube, wherein the vacuum pump is provided with an exhaust port; the sampling bottle has a chamber; the sampling tube is provided with a first inlet and a first outlet, and the first outlet is arranged in the cavity; the exhaust tube is provided with a second inlet and a second outlet, the second outlet is connected with the exhaust hole, the second inlet is arranged in the cavity so that the exhaust tube is communicated with the sampling tube, and the second inlet is spaced from the bottom end of the sampling bottle. The liquid sampling device can effectively improve the working efficiency of liquid sampling, solves the problems of small oil basin sampling port, small sampling space, large viscosity of the oil sample and safety risk of sampling of the generator set of the hydropower plant, has obvious safety benefit and economic benefit, and has wide popularization value.

Description

Liquid sampling device

Technical Field

The utility model relates to the technical field of oil sampling of a generator set of a hydropower plant, in particular to a liquid sampling device.

Background

At present, in the process of taking oil samples through guide bearings of generator sets of hydropower plants, after the generator sets are stopped, an observation window or a respirator of the generator sets is opened, a sampling pot is placed at the bottom of an oil basin to be sampled, one end of a cotton rope is placed in oil, and the other end of the cotton rope is fixed in the sampling pot for sampling. When the sampling space is small and the sampling pot can not be placed, and when the oil sample space of the upper guide bearing is small, the electrified equipment is more or the oil basin oil quantity is small and the bottom surface of the pot is higher than the oil basin oil surface after the sampling pot is placed in the slip ring chamber, the oil sample is usually pumped out by using a syringe connected with a pipeline and then poured into the sampling pot. Because the viscosity of oil is large, the sampling of the injector is difficult, the sampling amount of the oilcan and the injector is small, the working efficiency of the sampling modes is low, and the sampling has safety risks; when the sampling kettle samples, the risks that metal parts such as a sampling kettle handle and foreign matters such as a kettle plug fall into an oil basin exist, the normal operation of a unit is affected, and certain safety risks exist.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides a liquid sampling device which has high liquid sampling efficiency, convenient use and good safety.

The liquid sampling device of the embodiment of the utility model comprises:

a vacuum pump having an extraction port;

a sampling bottle having a chamber;

the sampling tube is provided with a first inlet and a first outlet, and the first outlet is arranged in the cavity; and

the exhaust tube is provided with a second inlet and a second outlet, the second outlet is connected with the exhaust opening, the second inlet is arranged in the cavity so that the exhaust tube is communicated with the sampling tube, and the second inlet is spaced from the bottom end of the sampling bottle.

The liquid sampling device provided by the embodiment of the utility model can effectively improve the working efficiency of liquid sampling, solves the problems of small oil basin sampling port, small sampling space, large viscosity of the oil sample and safety risk of sampling of a generator set of a hydropower plant, has obvious safety benefit and economic benefit, and has wide popularization value.

In some embodiments, the sampling bottle comprises:

the bottle body is provided with a cavity, the upper end of the bottle body is provided with a mounting hole, and the mounting hole is communicated with the cavity; and

the bottle stopper is matched in the mounting hole, the cavity is positioned below the bottle stopper to form the cavity, a first fixing hole and a second fixing hole are formed in the bottle stopper, the sampling tube is matched in the first fixing hole, and the exhaust tube is matched in the second fixing hole.

In some embodiments, the sampling tube comprises a first straight tube section and a first tube section connected, wherein the port of the free end of the first tube section forms the first inlet, the first straight tube section is matched in the first fixing hole, and the port of the free end of the first straight tube section forms the first outlet.

In some embodiments, the exhaust tube includes a second straight tube segment and a second tube segment connected, the second straight tube segment being fitted in the second fitting hole, a port of the free end of the second straight tube segment constituting the second inlet, and a port of the free end of the second tube segment constituting the second outlet.

In some embodiments, the liquid sampling device further comprises a guard assembly comprising:

the connecting ring is sleeved on the second straight pipe section;

one end of the connecting rod is arranged on the connecting ring; and

the protection plate is connected with the other end of the connecting rod, the protection plate is located below the second inlet, and the protection plate is spaced apart from the second inlet.

In some embodiments, the connection ring is threadably connected to the second straight tube segment.

In some embodiments, the liquid sampling device further comprises a bellows, an outlet of the bellows being in communication with the first inlet.

In some embodiments, the bellows is a copper bellows.

In some embodiments, the liquid sampling device further comprises a base, a first mounting groove and a second mounting groove are formed in the base, the vacuum pump is matched in the first mounting groove, and the sampling bottle is matched in the second mounting groove.

In some embodiments, the vacuum pump is a direct flow pump.

Drawings

FIG. 1 is a schematic diagram of a liquid sampling device according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration of the construction of a second straight tube section and a shield assembly according to an embodiment of the present utility model;

FIG. 3 is a second schematic diagram of a liquid sampling device according to an embodiment of the present utility model;

FIG. 4 is a third schematic diagram of a liquid sampling device according to an embodiment of the present utility model.

Reference numerals:

a liquid sampling device 100;

the vacuum pump 1, the sampling bottle 2, the chamber 20, the bottle body 21, the bottle stopper 22, the sampling tube 3, the first straight tube section 31, the first hose section 32, the first inlet 33, the first outlet 34, the suction tube 4, the second straight tube section 41, the second hose section 42, the second inlet 43, the second outlet 44, the protection component 5, the connection ring 51, the connection rod 52, the protection plate 53, the bellows 6 and the base 7.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

As shown in fig. 1 to 4, a liquid sampling device 100 according to an embodiment of the present utility model includes a vacuum pump 1, a sampling bottle 2, a sampling tube 3, and an exhaust tube 4. The vacuum pump 1 has an extraction opening. The sampling bottle 2 has a chamber 20. The sampling tube 3 has a first inlet 33 and a first outlet 34, the first outlet 34 being provided in the chamber 20; the aspiration tube 4 has a second inlet 43 and a second outlet 44, the second outlet 44 being connected to the aspiration port, the second inlet 43 being provided in the chamber 20 such that the aspiration tube 4 communicates with the sampling tube 3, the second inlet 43 being spaced apart from the bottom end of the sampling bottle 2.

When the liquid sampling device 100 of the embodiment of the utility model is used, the first inlet 33 of the sampling tube 3 is placed into the liquid to be sampled, the vacuum pump 1 is started, and the vacuum pump 1 pumps the air in the cavity 20 of the sampling bottle 2, so that the cavity 20 of the sampling bottle 2 forms negative pressure, and the liquid at the first inlet 31 of the sampling tube 3 enters the sampling bottle 2 along the sampling tube 3. After the liquid in the sampling bottle 2 reaches a set amount, the vacuum pump 1 is turned off.

The liquid sampling device 100 according to the embodiment of the utility model utilizes the vacuum pump 1 to form negative pressure in the sampling bottle 2, so that the liquid at the first inlet 31 of the sampling tube 3 is pumped into the sampling bottle 3, the sampling efficiency is high, the sampling of liquid with smaller sampling space can be adapted, the sampling of liquid with large viscosity, such as oil liquid, can be adapted, meanwhile, the sampling bottle 2 can be prevented from being directly contacted with equipment for containing the liquid to be sampled, a certain distance is formed between the sampling bottle 2 and the equipment, the collision between the sampling bottle 2 and the equipment to be sampled in the sampling process is avoided, foreign matters are prevented from falling into the sampling bottle 2, and the safety of the sampling process is good.

Therefore, the liquid sampling device 100 of the embodiment of the utility model has high liquid sampling efficiency, convenient use and good safety.

In order to make the solution of the present application easier to understand, an example will be described with reference to fig. 1 to 4, and the up-down direction is shown in fig. 1, 3 and 4.

The liquid sampling device 100 according to the embodiment of the present utility model includes a vacuum pump 1, a sampling bottle 2, a sampling tube 3, an exhaust tube 4, a protection component 5, a bellows 6, and a base 7.

The vacuum pump 1 is provided with an air extraction opening, the air extraction pipe 4 is arranged on the air extraction opening, and the air outlet of the air extraction pipe 4 is connected with the air extraction opening. The vacuum pump 1 is a direct-current type air pump, has light weight, is convenient to carry and easy to operate, has large sampling flow and is particularly suitable for sampling oil.

Specifically, the direct-current type air pump is a 12V lithium battery charging type portable air pump, the negative pressure value is minus 0.08MPa, and the direct-current type air pump has larger sampling power.

The sampling bottle 2 comprises a bottle body 21 and a bottle plug 22, wherein the bottle body 21 is provided with a cavity, the upper end of the bottle body 21 is provided with a mounting hole, the mounting hole is communicated with the cavity, the bottle plug 22 is matched in the mounting hole, the part of the cavity, which is positioned below the bottle plug 22, forms a cavity 20, a first fixing hole and a second fixing hole are formed in the bottle plug 22, the sampling tube 3 is matched in the first fixing hole, and the exhaust tube 4 is matched in the second fixing hole. Each of the sampling tube 3 and the air extraction tube 4 is connected with the bottle stopper 22, so that the fixing of the sampling tube 3 and the air extraction tube 4 is realized, the installation of the sampling tube 3 and the air extraction tube 4 is ensured, the bottle body 21 is convenient to replace, after one liquid sampling is finished, the bottle stopper 22 is separated from the bottle body 21, the bottle stopper 22 is matched with the unused next bottle body 21, and the repeated and convenient sampling can be finished.

The sampling tube 3 comprises a first straight tube section 31 and a first tube section 32 which are connected, wherein the port of the free end of the first tube section 32 (i.e. the end of the first tube section 32 remote from the first straight tube section 31) forms a first inlet 33, the first straight tube section 31 is fitted in the first fixing hole, the port of the free end of the first straight tube section 31 (i.e. the end of the first tube section 31 remote from the first tube section 32) forms a first outlet 34, and the first outlet 34 is provided in the chamber 20. The portion of sampling tube 3 cooperation in first mounting hole is first straight tube section 31, and first straight tube section 31 has certain hardness, can guarantee the joint strength between sampling tube 3 and the bottle plug 22, avoids liquid to flow through the in-process that sampling tube 3 got into bottle 21 simultaneously and arouses the rocking of first export 34, guarantees the stability of sampling process, avoids liquid to splash.

Specifically, each of the first straight tube section 31 and the first soft tube section 32 is a transparent tube so as to observe the flow condition of the liquid during sampling.

The bellows 6 is connected to the sampling tube 3, the outlet of the bellows 6 is in communication with the first inlet 33, and the inlet of the bellows 6 forms the sampling inlet of the liquid sampling device 100 according to an embodiment of the present utility model.

In using the liquid sampling device 100 of the embodiment of the present utility model, the inlet of the bellows 6 is placed into the liquid to be sampled, and the vacuum pump 1 is turned on, so that the liquid enters the chamber of the bottle body 21 along the bellows 6 and the sampling tube 3.

The corrugated tube 6 can be bent in multiple directions and multiple angles, so that the convenience in the sampling process of the liquid sampling device 100 in the embodiment of the utility model can be further improved, and the adaptability of the liquid sampling device 100 in the embodiment of the utility model to a smaller sampling space can be further improved.

Optionally, the bellows 6 is a copper bellows, which can adapt to sampling of most oil liquids, and has a wide application range.

The exhaust tube 4 comprises a second straight tube section 41 and a second tube section 42 which are connected, the second straight tube section 41 is matched in a matched second fixing hole, a port of the free end of the second straight tube section 41 (namely, the end of the second straight tube section 41 far away from the second tube section 42) forms a second inlet 43, a port of the free end of the second tube section 42 (namely, the end of the second tube section 42 far away from the second straight tube section 41) forms a second outlet 44, and the free end of the second tube section 42 is connected with an exhaust port of the vacuum pump 1. The part of the exhaust tube 4 matched in the second mounting hole is a second straight tube section 41, the second straight tube section 41 has certain hardness, the connection strength between the exhaust tube 4 and the bottle plug 22 can be ensured, the stability of the second inlet 43 is ensured, and the stability of the sampling process is improved.

Specifically, each of the second straight tube section 41 and the second tube section 42 is a transparent tube so as to facilitate observation of whether liquid enters the exhaust tube 4, so that the exhaust tube can be replaced in time, adverse effects of the liquid on the vacuum pump 1 are avoided, and safety and service life of the vacuum pump 1 in use are ensured.

The protection component 5 comprises a connecting ring 51, a connecting rod 52 and a protection plate 53, wherein the connecting ring 51 is sleeved on the second straight pipe section 41, one end of the connecting rod 52 is arranged on the connecting ring 51, the protection plate 53 is connected with the other end of the connecting rod 52, the protection plate 53 is positioned below the second inlet 43, and the protection plate 53 is spaced from the second inlet 43. The shielding plate 53 can prevent the liquid from splashing to the second inlet 43, thereby preventing the liquid from adversely affecting the suction pipe 4 and the vacuum pump 1.

The connecting ring 51 is in threaded connection with the second straight pipe section 41, the connecting structure is simple, the processing and the manufacturing are easy, the connecting operation between the connecting ring and the second straight pipe section 41 is simple and convenient, and the assembly and the disassembly of the protection component 5, the second straight pipe section 41 and the bottle stopper 22 are convenient.

The base 7 is provided with a first mounting groove and a second mounting groove, the vacuum pump 1 is matched in the first mounting groove, and the sampling bottle 2 is matched in the second mounting groove. The base 7 is connected with the sampling bottle 2 and the vacuum pump 1, so that the liquid sampling device 100 of the embodiment of the utility model has certain integrity, is convenient to carry and move, and improves the stability of the sampling bottle 2 and the vacuum pump 1 in the sampling process.

The liquid sampling device 100 of the embodiment of the utility model can also sample the oil return box of the oil pressure device such as a power plant speed regulator, a cylinder valve, flood discharging equipment and the like, and has wide application range.

The liquid sampling device 100 provided by the embodiment of the utility model can effectively improve the working efficiency of oil sample taking, solves the problems of small oil basin sampling port, small sampling space, large viscosity of the oil sample and safety risk of sampling of a generator set of a hydropower plant, has obvious safety benefit and economic benefit, and has wide popularization value.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A liquid sampling device, comprising:

a vacuum pump (1), wherein the vacuum pump (1) is provided with an extraction opening;

a sampling bottle (2), the sampling bottle (2) having a chamber;

a sampling tube (3), the sampling tube (3) having a first inlet (33) and a first outlet (34), the first outlet (34) being provided within the chamber; and

the exhaust pipe (4), exhaust pipe (4) have second entry (43) and second export (44), second export (44) with the extraction opening is connected, and second entry (43) are established in the chamber so that exhaust pipe (4) with sampling tube (3) intercommunication, second entry (43) with the bottom of sample bottle (2) is spaced apart.

2. The liquid sampling device according to claim 1, wherein the sampling bottle (2) comprises:

the bottle comprises a bottle body (21), wherein the bottle body (21) is provided with a cavity, the upper end of the bottle body (21) is provided with a mounting hole, and the mounting hole is communicated with the cavity; and

the bottle stopper (22), bottle stopper (22) cooperation is in the mounting hole, the cavity is located the part of bottle stopper (22) below constitutes the cavity, be equipped with first fixed orifices and second fixed orifices on bottle stopper (22), sampling tube (3) cooperation is in the first fixed orifices, exhaust tube (4) cooperation is in the second fixed orifices.

3. A liquid sampling device according to claim 2, wherein the sampling tube (3) comprises a first straight tube section (31) and a first tube section (32) connected, the port of the free end of the first tube section (32) constituting the first inlet (33), the first straight tube section (31) fitting in a first fixed hole, the port of the free end of the first straight tube section (31) constituting the first outlet (34).

4. A liquid sampling device according to claim 2, wherein the suction tube (4) comprises a second straight tube section (41) and a second tube section (42) connected, the second straight tube section (41) being fitted in a second fitting hole, the port of the free end of the second straight tube section (41) constituting the second inlet (43), the port of the free end of the second tube section (42) constituting the second outlet (44).

5. The liquid sampling device according to claim 4, further comprising a guard assembly (5), the guard assembly (5) comprising:

the connecting ring (51) is sleeved on the second straight pipe section (41);

a connecting rod (52), wherein one end of the connecting rod (52) is arranged on the connecting ring (51); and

the protection plate (53), the protection plate (53) with the other end of connecting rod (52) is connected, protection plate (53) are located second entry (43) below, protection plate (53) with second entry (43) interval.

6. A liquid sampling device according to claim 5, wherein the connection ring (51) is screwed with the second straight tube section (41).

7. The liquid sampling device according to claim 1, further comprising a bellows (6), an outlet of the bellows (6) being in communication with the first inlet (33).

8. A liquid sampling device according to claim 7, wherein the bellows (6) is a copper bellows.

9. The liquid sampling device according to claim 1, further comprising a base (7), wherein a first mounting groove and a second mounting groove are provided on the base (7), wherein the vacuum pump (1) is fitted in the first mounting groove, and wherein the sampling bottle (2) is fitted in the second mounting groove.

10. The liquid sampling device according to claim 1, wherein the vacuum pump (1) is a direct flow suction pump.