CN218674164U - Liquid resistance measuring equipment - Google Patents

Abstract

The utility model relates to a liquid resistance measuring equipment for the liquid resistance of the pipe device of the air conditioning system is measured, including the measuring unit, the measuring unit includes the anchor clamps that are used for centre gripping the pipe device and guide measuring liquid to pass through the pipe device, the anchor clamps include first clamping part and second clamping part, first clamping part includes the first liquid channel that is used for being linked together with one end of the pipe device, the second clamping part includes the second liquid channel that is used for being linked together with the other end of the pipe device; the first clamping part and the second clamping part are arranged oppositely, and the distance between the first clamping part and the second clamping part is adjustable. By arranging the first clamping part and the second clamping part with adjustable relative distances, quick installation and liquid resistance measurement of pipeline devices with different lengths can be realized.

Description

Liquid resistance measuring equipment

Technical Field

The utility model relates to an air conditioner field, more specifically say, relate to a liquid resistance measuring equipment.

Background

In the development process of an air conditioning system, the liquid resistance of system devices is an important parameter influencing the energy efficiency index of a product. Most enterprises at present basically rely on the liquid resistance parameter that the device supplier provided to carry out the model selection calculation in the product design link, can't know the actual liquid resistance state of device, probably can be because the old damage of device, the production uniformity subalternation scheduling problem the condition that appears and liquid resistance nominal value deviation too big, and then influence air conditioner product performance index and the uniformity of performance.

The device liquid resistance measuring equipment in the related art has the problems of single type, structure and size of the detected system device and non-visual detection data, is mostly applied to fixed places, is inconvenient to move, and has certain limitation in actual air conditioner product production and development and application.

Disclosure of Invention

The utility model aims to solve the problem that a modified liquid resistance measuring equipment is provided.

The utility model provides a technical scheme that its technical problem was adopted provides a liquid resistance measuring equipment for the liquid resistance of air conditioning system's pipe fittings is measured, including the measuring unit, its characterized in that, the measuring unit is including the anchor clamps that are used for centre gripping the pipe fittings and guide measuring liquid to pass through the pipe fittings, anchor clamps include first clamping part and second clamping part, first clamping part including be used for with the first liquid passage of one end of pipe fittings intercommunication, the second clamping part including be used for with the second liquid passage of the other end of pipe fittings intercommunication; the first clamping part and the second clamping part are arranged oppositely, and the distance between the first clamping part and the second clamping part is adjustable.

In some embodiments, the first clamping member comprises a first body portion comprising a first surface opposite the second clamping member and a third surface opposite the first surface, the first liquid channel passing through from a middle of the first surface to the third surface;

and/or the presence of a gas in the gas,

the second clamping member includes a second body portion including a second surface opposite the first clamping member and a fourth surface opposite the second surface, and the second liquid passage passes through from a middle of the second surface to the fourth surface.

In some embodiments, the first body portion includes a first mounting hole penetrating from a middle portion of the first surface to the third surface; the first clamping component comprises a first conduit, the first conduit is arranged in the first mounting hole in a penetrating mode, and the inner wall of the first conduit defines the first liquid channel;

and/or the presence of a gas in the atmosphere,

the second body part comprises a second mounting hole penetrating from the middle part of the second surface to the fourth surface; the second clamping component comprises a second conduit, the second conduit is arranged in the second mounting hole in a penetrating mode, and the inner wall of the second conduit defines the second liquid channel.

In some embodiments, the first conduit includes a first end portion proximate the first surface, the first end portion protruding from the first surface and being tapered;

and/or the presence of a gas in the gas,

the second conduit includes a second end portion adjacent the second surface, the second end portion protruding from the second surface and being tapered.

In some embodiments, the first clamping member further comprises a first sealing element, the first sealing element is mounted on the first surface, a first through hole is formed in the first sealing element, and the first end portion is in interference fit with the first sealing element through the first through hole, that is, in a natural state, the diameter of the first through hole is smaller than the diameter of the first end portion;

and/or the presence of a gas in the gas,

the second clamping part further comprises a second sealing piece, the second sealing piece is installed on the second surface, a second through hole is formed in the second sealing piece, the second end portion passes through the second through hole and is in interference fit with the second sealing piece, namely, under the natural state, the aperture of the second through hole is smaller than the diameter of the second end portion.

In some embodiments, the fixture further comprises a first seat and a second seat, the first clamping member and the second clamping member being mounted on the first seat and the second seat, respectively; the first base is mounted on the second base and can move back and forth relative to the second base to drive the first clamping component to approach or depart from the second clamping component.

In some embodiments, the measuring unit further comprises a pressure detection assembly, the pressure detection assembly comprises a first detection device and a second detection device, and the first detection device and the second detection device are respectively mounted at the upstream and downstream of the clamp;

in some embodiments, the measuring unit further comprises a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe are respectively installed at two ends of the clamp; the first connecting pipe is communicated with the first liquid passage, and the second connecting pipe is communicated with the second liquid passage.

In some embodiments, the liquid resistance measuring device further comprises a liquid supply unit, the liquid supply unit comprises a liquid storage container, a pump, a first pipeline and a second pipeline, the measuring unit is arranged in the middle of the first pipeline, one end of the first pipeline is connected with the pump, and the other end of the first pipeline is connected with the liquid storage container; one end of the second pipeline is connected with the pump, and the other end of the second pipeline is connected with the liquid storage container.

In some embodiments, the liquid supply unit further comprises a control valve through which the pump is connected to the first and second lines, the first line being in fluid communication and the second line being closed when a device liquid resistance measurement is taken; when the device is replaced, the control valve is adjusted, the first pipeline is closed, and the second pipeline is communicated.

In some embodiments, the liquid resistance measuring apparatus further comprises a frame on which the measuring unit and the liquid supply unit are mounted, the frame including a moving member for facilitating movement of the frame.

The utility model has the advantages that: by arranging the first clamping part and the second clamping part with adjustable relative distances, quick installation and liquid resistance measurement of pipeline devices with different lengths can be realized.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is an overall schematic view of a hydraulic resistance measuring apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view of a clamp portion of the liquid resistance measuring apparatus shown in FIG. 1;

fig. 3 is a plan view of a jig portion of the liquid resistance measuring apparatus shown in fig. 1.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.

It should also be noted that, unless expressly specified or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and encompass, for example, fixed connections as well as removable connections or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are merely for convenience in describing the present technical solution and are not to be construed as indicating or implying any relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

Fig. 1 illustrates a liquid resistance measuring apparatus according to some embodiments of the present invention, which may be used for liquid resistance measurement of air conditioning system components, and may include a frame 1, a measuring unit 2, and a liquid supply unit 3. The frame 1 is used to mount the measuring unit 2 and the liquid supply unit 3 and to control the liquid resistance measuring apparatus. The measuring unit 2 and the liquid supply unit 3 are both mounted on the frame 1, and the measuring unit 2 and the liquid supply unit 3 are connected to each other. During the measurement, the measurement unit 2 is used for mounting the device under test and collecting relevant data; the liquid supply unit 3 is used for supplying liquid to the measurement unit 2 and the device under test.

In some embodiments, the gantry 1 may include a main control panel 11, a touch screen 12, and a mover 13. The main control board 11 and the touch screen 12 are both installed on the frame 1, and are connected with an electrical circuit inside the frame 1, and are used for operating the liquid resistance measuring equipment to measure the liquid components of the device. The moving part 13 is installed on the frame 1, and is convenient for the frame 1 to move.

In some embodiments, the measurement unit may include a clamp 20, a first connection pipe 27, a second connection pipe 28, and a pressure detection assembly 29. A clamp 20 is mounted on the gantry 1 for clamping a device under test. A first connection pipe 27 and a second connection pipe 28 are respectively installed at both ends of the jig 20 for connecting the jig 20 and the liquid supply unit 3. The pressure detecting assembly 29 may include a first pressure detecting device 291 and a second press detecting device 292, and the first pressure detecting device 291 and the second press detecting device 292 are respectively disposed on the first connecting pipe 27 and the second connecting pipe 28 to detect pressure changes upstream and downstream of the jig 20.

In some embodiments, the clamp 20 can include a first clamping member 21, a second clamping member 22, a first seat 23, a second seat 24, a first fastener 25, and a second fastener 26. The first clamping member 21 is movably mounted on the first base 23 for abutting against one end of the device under test. The second clamping member 22 is fixedly mounted on the second base 24, and the second clamping member 22 and the first clamping member 21 are disposed opposite to each other for abutting against the other end of the device under test. The first seat 23 is movably mounted on the second seat 24 for providing a path for the first clamping member 21 to move away from or close to the second clamping member 22. The second fastening structure 24 is mounted on the frame 1 for providing the first fastening structure 23 with a path away from or close to the second clamping member 22. The first fastener 25 is used for fixing the first clamping member 21 on the first seat 23. The second fastening member 26 abuts against the first fastening member 23 through the mounting hole at one end of the second fastening member 24, and the first fastening member 26 is operated to move and fasten the first fastening member 23 toward the second clamping member 22, so as to provide a pre-tightening force to the first clamping member 21 and the first clamping member 22.

Referring to fig. 2 and 3 together, in some embodiments, the first clamping member 21 may include a first body portion 210, a first conduit 213, a first seal 214, and a first fluid passage 215. The first body portion 210 is mounted on the first housing 23 as a main body of the first clamping member 21. A first conduit 213 is disposed through the first body portion 210, and an inner wall thereof defines a first fluid channel 215. In measurement, the first liquid channel 215 communicates the first connecting tube 27 and the device under test, providing a passage for the liquid to flow through the first body portion 210. The first sealing member 214 is mounted on the first body portion 210 for improving the tightness between the first body portion 210 and the device under test.

In some embodiments, the first body portion 210 may include a first surface 211, a third surface 212, and a first mounting hole. The first surface 211 is disposed opposite the second clamping member 22 for mounting the first seal 214. The third surface 212 is in turn arranged opposite the first surface 211 for connecting the first connection tube 27. A first installation hole penetrates from the middle of the first surface 211 to the third surface 212 for installing the first guide pipe 213.

In some embodiments, a first end of the first conduit 213 proximate the first surface 211 may be tapered and protrude from the first surface 211. The first sealing element 214 may be a sealing rubber pad, and may include a first through hole, where the first through hole is configured to form an interference fit with the first end portion of the first conduit 213, that is, in a natural state, a diameter of the first through hole is smaller than a diameter of the first end portion of the first conduit 213, so as to improve radial sealing performance between the device under test and the first body portion 210.

In some embodiments, the first connecting tube 27, the first conduit 213, the first mounting hole, and the first seal 214 may be coaxially disposed.

Referring again to fig. 2 and 3 together, in some embodiments, the second clamping member 22 may include a second body portion 220, a second conduit 223, a second seal 224, and a second fluid passage 225. The second body 220 is mounted on the second housing 24 and serves as a main body of the second clamping member 22. A second conduit 223 extends through the second body portion 220 and defines a second fluid passageway 225. During measurement, the second fluid channel 225 connects the second connecting tube 28 and the device under test, providing a path for fluid to flow through the second body portion 220. A second seal 224 is mounted on the second body portion 220 for improving the tightness between the second body portion 220 and the device under test.

In some embodiments, the second body portion 220 may include a second surface 221, a fourth surface 222, and a second mounting hole. The second surface 211 is disposed opposite the first clamping member 21 for mounting the second seal 224. The fourth surface 222 is in turn arranged opposite to the second surface 221 for connection of the second connection pipe 28. A second mounting hole penetrates from the middle of the second surface 221 to the fourth surface 222 for mounting the second guide pipe 223.

In some embodiments, a second end of the second conduit 223 proximate the second surface 221 may be tapered and protrude from the second surface 221. The second sealing member 224 may be a sealing rubber pad, and may include a second through hole, where the second through hole is configured to form an interference fit with the second end portion of the second conduit 223, that is, in a natural state, a diameter of the second through hole is smaller than a diameter of the second end portion of the second conduit 223, so as to improve radial sealing performance between the device under test and the second body portion 220.

In some embodiments, the second connecting tube 28, the second conduit 223, the second mounting hole, and the second seal 224 may be coaxially disposed.

In some embodiments, the first seat 23 may be provided with a first slide rail 231 for providing a moving path for the first clamping member 21 to approach or move away from the second clamping member 22. The second seat 24 may be provided with a second slide rail 241 for providing a moving path for the first seat 23 to approach or depart from the second clamping member 22.

As further shown in FIG. 1, in some embodiments, the liquid supply unit 3 may include a reservoir 31, a pump 32, a control valve 33, a first line 34, and a second line 35. A reservoir 31 is mounted on the frame 1 for storing the liquid required for the measurement. A pump 32 is mounted on the frame 1 for powering the liquid flow. The control valve 33 is connected to the pump 32, the first line 34, and the second line 35, and switches the flow line of the liquid when the device under test is replaced. The first line 34 is connected at both ends to the control valve 33 and the reservoir 31, respectively, and communicates with the measurement unit in between for introducing and discharging liquid into and out of the measurement unit 2 during measurement. The second line 35 is connected at each end to the control valve 33 and the reservoir 31, respectively, for fluid communication during replacement of the device under test without restarting the measuring apparatus. When the liquid resistance of the device is measured, the first pipeline 34 is communicated, and the second pipeline 35 is closed; when a device is to be replaced, the control valve 33 is adjusted, the first line 34 is closed, and the second line 35 is opened.

In some embodiments, the reservoir 31 may include a priming port 311, a drain port 312, and a filter 313. The liquid injection port 31 is provided on the liquid storage container and is used for injecting liquid required for measurement. The liquid outlet 312 is generally disposed at a position below the liquid storage container 31, so as to facilitate discharging of the liquid in the liquid storage container 31 after the measurement is completed. A filter may be provided at the junction of the reservoir 31 and the pump 32 for filtering impurities in the liquid and reducing measurement errors.

In some embodiments, pump 32 may include an inlet pipe 321 and an outlet pipe 322. One end of the liquid inlet pipe 321 is mounted on the pump 32, and the other end is communicated with the liquid storage container 31; one end of the liquid outlet pipe 322 is mounted on the pump 32, and the other end is connected to the control valve 33 for guiding out the liquid in the liquid storage container 31.

In some embodiments, the first conduit 34 may include a first pipe 341, a second pipe 342, a first shut-off valve 343, and a second shut-off valve 344. The first pipe 341 may be a hose, one end of which is connected to the control valve 33 and the other end of which is connected to the first connection pipe 27 for introducing liquid into the measuring unit. One end of the second pipe 342 is connected with the second connecting pipe 28, and the other end is connected with the liquid storage container, so as to lead out the liquid in the measuring unit; a flow meter 3421 may be disposed on the second pipe 342 for detecting whether the flow rate of the liquid in the measuring device is stable. A first cutoff valve 343 is provided at the junction of the first pipe 341 and the first connection pipe 27; a second shut-off valve 344 is provided at the junction of the second pipe 342 and the second connection pipe 28. When the device to be tested is replaced, the first stop valve 343 and the second stop valve 344 are closed in advance, and the liquid remaining in the first pipeline 34 is prevented from flowing out of the clamp 20.

The detection principle of the above embodiment: according to the value of the flowmeter 3421, the pump 32 is adjusted to achieve the set flow output, after the flow is stabilized, the pressure detection component 29 measures and reads the hydraulic pressure difference value before and after the clamp 20, and through calculation: the actual liquid resistance value of the device is measured by the liquid resistance of the device = the front and back hydraulic pressure difference of the clamp 20-the liquid resistance value of the clamp 20; the liquid resistance of the fixture 20 itself can be measured by replacing the device to be measured with a smooth straight pipeline with a constant pipe diameter according to the method of the above embodiment.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A liquid resistance measuring device for liquid resistance measurement of a pipe means of an air conditioning system, comprising a measuring unit (2), characterized in that the measuring unit (2) comprises a clamp (20) for clamping the pipe means and guiding a measuring liquid through the pipe means, the clamp (20) comprising a first clamping part (21) and a second clamping part (22), the first clamping part (21) comprising a first liquid passage (215) for communicating with one end of the pipe means, the second clamping part (22) comprising a second liquid passage (225) for communicating with the other end of the pipe means; the first clamping part (21) and the second clamping part (22) are arranged oppositely, and the distance between the first clamping part and the second clamping part is adjustable.

2. A liquid resistance measuring apparatus according to claim 1, wherein the first holding member (21) includes a first body portion (210), the first body portion (210) includes a first surface (211) opposite to the second holding member (22) and a third surface (212) opposite to the first surface (211), the first liquid passage (215) passes through from a middle of the first surface (211) to the third surface (212);

and/or the presence of a gas in the atmosphere,

the second clamping member (22) comprises a second body portion (220), the second body portion (220) comprising a second surface (221) opposite the first clamping member (21) and a fourth surface (222) opposite the second surface (221), the second liquid channel (225) passing through from the middle of the second surface (221) to the fourth surface (222).

3. A liquid resistance measuring apparatus according to claim 2, wherein the first body portion (210) includes a first mounting hole passing through from a middle of the first surface (211) to the third surface (212); the first clamping member (21) comprises a first conduit (213), the first conduit (213) being arranged through the first mounting hole with its inner wall defining the first liquid passage (215);

and/or the presence of a gas in the gas,

the second body part (220) includes a second mounting hole penetrating from a middle of a second surface (221) to the fourth surface (222); the second clamping member (22) includes a second conduit (223), the second conduit (223) passing through the second mounting hole with an inner wall defining the second fluid passage (225).

4. A liquid resistance measuring device according to claim 3, wherein the first conduit (213) comprises a first end portion adjacent to the first surface (211), the first end portion protruding from the first surface (211) and being tapered;

and/or the presence of a gas in the gas,

the second conduit (223) comprises a second end portion adjacent to the second surface (221), the second end portion protruding from the second surface (221) and being tapered.

5. The liquid resistance measuring device according to claim 4, wherein the first clamping member (21) further comprises a first sealing member (214), the first sealing member (214) is mounted on the first surface (211), a first through hole is formed in the first sealing member (214), and the first end portion is in interference fit with the first sealing member (214) through the first through hole, namely the diameter of the first through hole is smaller than the diameter of the first end portion in a natural state;

and/or the presence of a gas in the atmosphere,

the second clamping component (22) further comprises a second sealing element (224), the second sealing element (224) is installed on the second surface (221), a second through hole is formed in the second sealing element (224), the second end portion passes through the second through hole and is in interference fit with the second sealing element (224), namely the aperture of the second through hole is smaller than the diameter of the second end portion in a natural state.

6. The hydraulic resistance measurement apparatus according to claim 1, wherein the clamp (20) further includes a first seat (23) and a second seat (24), the first clamping member (21) and the second clamping member (22) being mounted on the first seat (23) and the second seat (24), respectively; the first seat body (23) is mounted on the second seat body (24) and can move back and forth relative to the second seat body (24) to drive the first clamping part (21) to approach or depart from the second clamping part (22).

7. A liquid resistance measuring apparatus according to claim 1, wherein the measuring unit (2) further comprises a pressure detecting assembly (29), the pressure detecting assembly (29) comprising a first detecting device (291) and a second detecting device (292), the first detecting device (291) and the second detecting device (292) being installed upstream and downstream of the jig (20), respectively;

the measuring unit (2) further comprises a first connecting pipe (27) and a second connecting pipe (28), and the first connecting pipe (27) and the second connecting pipe (28) are respectively installed at two ends of the clamp (20); the first connection pipe (27) communicates with the first liquid passage (215), and the second connection pipe (28) communicates with the second liquid passage (225).

8. The hydraulic resistance measuring apparatus according to claim 1, further comprising a liquid supply unit (3), the liquid supply unit (3) including a reservoir (31), a pump (32), a first pipe (34), and a second pipe (35), the measuring unit (2) being disposed in the middle of the first pipe (34), the first pipe (34) having one end connected to the pump (32) and the other end connected to the reservoir (31); one end of the second pipeline (35) is connected with the pump (32), and the other end of the second pipeline is connected with the liquid storage container (31).

9. Liquid resistance measuring device according to claim 8, characterized in that the liquid supply unit (3) further comprises a control valve (33), the pump (32) being connected to the first line (34) and the second line (35) via the control valve (33), the first line (34) being in flow communication and the second line (35) being closed during the device liquid resistance measurement; when a device is to be replaced, the control valve (33) is adjusted, the first line (34) is closed and the second line (35) is open.

10. A liquid resistance measuring apparatus according to claim 9, further comprising a frame (1), the measuring unit (2) and the liquid supply unit (3) being mounted on the frame (1), the frame (1) comprising a moving member (13) for facilitating movement of the frame (1).

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