CN218066921U - Double-end-face mechanical seal static pressure operation test bed - Google Patents

Abstract

The utility model relates to a double mechanical seal static pressure operation test bench, it belongs to check out test set technical field. The utility model discloses a bearing box, the first section of pressure chamber, the pressure chamber end section, transmission main shaft, the dabber, but the alternative axle sleeve, the blind flange, connect the sap cavity, high-pressure cooling tank etc, the first section of pressure chamber is installed on the bearing box and is constituted sealed pressure chamber, the pressure chamber end section is installed on the first section of pressure chamber and is constituted the sealed chamber of second, dabber one end is passed through central taper hole and is fixed a position with transmission main shaft cooperation, the dabber other end passes through antifriction bearing and supports, the spindle is simultaneously opposite direction install one set of company's of keeping together survey and one set of mechanical seal product of being surveyed, sealed pressure chamber and high-pressure cooling tank communicate through the pipeline each other, but the during operation can realize not unidimensional double-ended face mechanical seal product testing through changing the alternative axle sleeve. The utility model discloses possess that the main shaft operation precision is high, the upper limit of allowable pressure is high, circulation temperature control effect is good, be suitable for advantages such as detection product wide range, operation maintenance convenience.

Description

Double-end-face mechanical seal static pressure operation test bed

Technical Field

The utility model relates to a test bench especially relates to a double mechanical seal static pressure operation test bench, and it belongs to check out test set technical field.

Background

The mechanical seal is called end face seal, is a shaft seal device of rotating machinery, mainly comprises a moving ring (rotating ring) and a static ring (static ring), is widely applied to equipment such as centrifugal pumps, centrifuges, reaction kettles, compressors and the like, and has the quality of the mechanical seal as a core part for preventing leakage, which greatly and directly influences the performance and the service life of the equipment. Therefore, the reliability of the mechanical seal is particularly important, and accordingly, the research on the mechanical seal detection technology is also significant.

The mechanical sealing product can be subdivided into a plurality of types such as single-end-face mechanical sealing, double-end-face mechanical sealing and the like according to different structural forms, wherein the double-end-face mechanical sealing is a rotating shaft sealing device widely applied to submersible pump products. The static pressure operation test of the mechanical seal is mainly carried out in the industry aiming at the double-end-face mechanical seal product so as to detect the leakage rate of the mechanical seal product in static and rotating states respectively and judge whether the mechanical seal product is qualified or not according to the leakage rate.

The invention discloses a Chinese patent with publication number CN111238741A, namely 'a mechanical seal detection device and a washing detection process', which is published as 06, 05 and 2020 year. This patent has designed the pump bracket to install the pump case and form the pressure chamber on the bracket, quiet ring is installed on the pump case, the rotating ring is installed on the pump shaft, through the analysis, this patent device exists following several aspects not enough: (1) The pump shaft is only provided with a mechanical seal product to be detected, so that a large axial unbalance force can be generated to damage a detection device, and the detection device is particularly not suitable for detecting high-pressure mechanical seal products (the larger the pressure is, the larger the axial unbalance force is); (2) The end of a pump shaft for installing a mechanical seal product is suspended without any support, and the pump shaft is easy to generate larger radial circular runout when rotating at a high speed, so that the running precision is reduced, and even the reliability of a test result is reduced (the mechanical seal is leaked due to the large radial runout of the pump shaft, and the test result is misled); (3) The detection device is lack of a sealing liquid heating or cooling mechanism and cannot actively control the temperature of the sealing liquid; (4) The detection device cannot be suitable for detecting double-end-face mechanical seal products and can only be suitable for detecting conventional single-end-face mechanical seal products, the detection device is poor in universality, parts such as pump shafts and pump shells needing to be correspondingly replaced and adapted to mechanical seal products of different sizes are complex to operate, and the labor intensity is high.

Therefore, according to the actual detection requirements of the double-end-face mechanical seal industry, the double-end-face mechanical seal detection device which is small in axial unbalance force, capable of bearing high-pressure test detection, small in main shaft radial run-out, actively controllable in sealing liquid temperature, good in universality and simple and convenient to operate is developed and is used as detection equipment for developing the static-pressure running performance test of the double-end-face mechanical seal, so that the technical level of the mechanical seal detection equipment is improved, the labor intensity of the mechanical seal detection test is reduced, the standardization of the mechanical seal detection equipment in China is promoted, and the double-end-face mechanical seal detection device is particularly necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design is reasonable, and the test result is accurate reliable, and the equipment commonality is good, is suitable for and detects the product range wide, and operation maintenance is convenient, can effectively alleviate the double mechanical seal static pressure operation test bench of testing intensity of labour.

The utility model provides a technical scheme that above-mentioned problem adopted is: the double-end-face mechanical seal static pressure operation test bed comprises a rack, a flat plate, a liquid receiving cavity, a flange cover, a high-pressure cooling tank, a bearing box, a motor, a replaceable shaft sleeve, a mandrel and a transmission main shaft, wherein the flat plate is arranged on the rack; the transmission main shaft is arranged in the bearing box; one end of a transmission main shaft is connected with a motor, the other end of the transmission main shaft is matched and positioned with one end of a mandrel through a central taper hole and is coaxially and fixedly connected with the mandrel through a round nut, and the other end of the mandrel is supported on a flange cover; but the coaxial fixed mounting of alternate form axle sleeve is on the dabber, its characterized in that: the pressure cavity tail section, the pressure cavity head section, the first tested static ring seat, the second tested static ring seat, the tested dynamic ring, the accompanying dynamic ring and the accompanying static ring seat are also included, the pressure cavity head section is arranged on the bearing box and enables the pressure cavity head section to be coaxial with the bearing mounting hole of the bearing box, the flange cover is arranged on the tail section of the pressure cavity and enables the flange cover to be coaxial with the tail section of the pressure cavity, and the liquid receiving cavity is arranged on the flange cover and enables the liquid receiving cavity to be coaxial with the flange cover; the accompany-testing static ring seat is coaxially fixed on the bearing box, an accompany-testing static ring is arranged in the accompany-testing static ring seat, and an accompany-testing moving ring is fixed on the mandrel and matched with the accompany-testing static ring to form a pair of dynamic seals; the first coaxial arrangement of quiet ring holder of quilt survey is on the pressure chamber head section, and this quiet ring holder of quilt survey internally mounted has the quiet ring one of quilt survey, and No. two coaxial arrangements of quiet ring holder of quilt survey are covered by the flange, and this quiet ring holder of quilt survey No. two internally mounted has the quiet ring two of quilt survey, and the quiet ring of quilt survey is fixed on the replaceable shaft cover and is formed a pair of two terminal surfaces dynamic seal with the quiet ring one of quilt survey, the cooperation of quiet ring two of quilt survey.

Preferably, the utility model discloses still include speed sensor, speed sensor installs on the flat board.

Preferably, the utility model discloses still include pressure sensor, pressure sensor installs on the bearing box.

Preferably, the utility model discloses still include temperature sensor, temperature sensor installs on the bearing box.

As preferred, it has the bearing mounting hole to be used for the installation support transmission main shaft to open on the bearing box, still open on the bearing box with pressure chamber head end directly the intercommunication pressure sensor installation interface, temperature sensor installation interface, still open in addition on the bearing box with pressure chamber head end directly the intercommunication two pipeline interface and respectively through one advance two pipelines and one go out two pipelines and high-pressure cooling tank intercommunication.

As preferred, sealed liquid in high-pressure cooling tank and the pressure chamber head end feeds through each other through entering one and going out two pipelines, and installs the cooling coil who carries out effective cooling to sealed liquid and carry out the sealed liquid heating device that effective heating heaied up to sealed liquid in the inside cavity of high-pressure cooling tank.

As preferred, the frame adopts shaped steel integral welding frame or aluminum alloy ex-trusions frame, and this frame bottom mount foot seat, frame install backplate, the inside motor mounting platform that sets up of frame all around.

Preferably, the flat plate of the utility model is a cast thick steel plate.

Preferably, the motor adopts a variable frequency speed control motor.

Compared with the prior art, the utility model, have following advantage and effect: (1) One end of the mandrel is matched and positioned with the transmission main shaft through the central taper hole, the other end of the mandrel is supported on the flange cover through the rolling bearing, and the 'simply supported beam' type stable supporting structure effectively reduces radial circular run-out of the mandrel during high-speed operation and improves the overall operation precision of the transmission main shaft and the mandrel, so that the double-end-face mechanical seal static pressure operation test bed has the advantages of high main shaft operation precision and accurate and reliable test results; (2) A set of mechanical seal products for accompanying measurement and a set of mechanical seal products to be measured are simultaneously installed on the mandrel in an opposite direction, so that axial unbalanced force on the transmission main shaft can be effectively counteracted, and the tapered roller bearing for supporting the transmission main shaft can bear larger axial force, therefore, the mechanical seal static pressure operation test bed has the advantages of small axial unbalanced force, high allowable upper limit of pressure and suitability for high-pressure double-end-face mechanical seal product detection; (3) The sealing pressure cavity is communicated with the sealing liquid in the high-pressure cooling tank through a pipeline with one inlet and one outlet, the cooling coil is arranged in the cavity in the high-pressure cooling tank, the cooling coil can effectively cool the sealing liquid based on a thermosiphon principle, and the sealing liquid heating device is also arranged on the high-pressure cooling tank, so that the sealing liquid can be effectively heated, and the mechanical sealing static pressure operation test bed has the advantages of good circulating temperature control effect and capability of accurately controlling the temperature of the sealing liquid; (4) When testing double mechanical seal products with different dimensions, only the replaceable shaft sleeve and two tested static ring seats are required to be replaced by corresponding design, so that product detection tests can be realized, all pipelines communicated with the inside of the seal pressure cavity, the sensor and the like are installed on the bearing box, repeated pipeline disassembly and assembly and parts such as the sensor are not required when replacing the tested mechanical seal products, and therefore the double mechanical seal static pressure operation test bed has the advantages of being good in equipment universality, wide in application range of detection products, convenient to operate and maintain and capable of effectively reducing labor intensity of the detection tests.

Drawings

Fig. 1 is the utility model discloses double mechanical seal static pressure operation test bench axle survey schematic diagram.

Fig. 2 is the utility model discloses double mechanical seal static pressure operation test bench sectional structure schematic diagram of embodiment.

Fig. 3 is a schematic enlarged view of a partial sectional structure of a bearing box and a pressure chamber part of a double-end-face mechanical seal static pressure operation test bed in an embodiment of the present invention.

In the figure: the device comprises a frame 1, a flat plate 2, a liquid receiving cavity 3, a flange cover 4, a pressure cavity tail section 5, a pressure cavity head section 6, a high-pressure cooling tank 7, a bearing box 8, a belt pulley protection cover 9, a rotating speed sensor 10, a pressure sensor 11, a temperature sensor 12, a driven belt pulley 13, a transmission belt 14, a driving belt pulley 15, a motor 16, a replaceable shaft sleeve 17, a measured moving ring 18, a measured static ring seat No. two 19, a rolling bearing 20, a measured static ring seat No. one 21, a measurement accompanying moving ring 22, a measurement accompanying static ring seat 23, a mandrel 24, a tapered roller bearing 25 and a transmission main shaft 26.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

Examples are given.

Referring to fig. 1 to 3, the double-end-face mechanical seal static pressure operation test bed of the embodiment includes a frame 1, a flat plate 2, a motor 16, a bearing box 8, a pressure chamber first section 6, a pressure chamber last section 5, a transmission main shaft 26, a tapered roller bearing 25, a mandrel 24, a rolling bearing 20, a replaceable shaft sleeve 17, a flange cover 4, a measured stationary ring seat number one 21, a measured stationary ring seat number two 19, a measured stationary ring seat number two 23, a liquid receiving chamber 3, a high-pressure cooling tank 7, a driving pulley 15, a driven pulley 13, a transmission belt 14, a pulley protection cover 9, a rotation speed sensor 10, a pressure sensor 11, a temperature sensor 12, and various auxiliary components such as valves, pipelines, sealing elements, and fastening elements.

The bearing box 8 in this embodiment is fixedly installed on the flat plate 2, two bearing installation through holes are respectively formed in the left end face and the right end face of the bearing box 8 and used for installing and supporting the transmission main shaft 26, three threaded connectors directly communicated with the first section 6 of the pressure cavity are further formed in the bearing box 8, the three threaded connectors are respectively provided with the pressure sensor 11, the temperature sensor 12 and the liquid discharge valve, and the bearing box 8 is further provided with a sealing liquid circulation liquid inlet threaded connector and a sealing liquid circulation liquid outlet threaded connector which are directly communicated with the first section 6 of the pressure cavity and are respectively communicated with the high-pressure cooling tank 7 through pipelines.

The high-pressure cooling tank 7 in the embodiment is fixedly arranged on the flat plate 2 through a bracket and is higher than the bearing box 8 by a certain distance so as to facilitate thermal circulation based on a thermosiphon principle; a cooling coil is arranged in a cavity inside the high-pressure cooling tank 7, a cooling coil water inlet threaded connector and a cooling coil water outlet threaded connector which are respectively communicated with two ends of the internal cooling coil are arranged on the high-pressure cooling tank 7, and the cooling coil can be a copper pipe; the high-pressure cooling tank 7 is also provided with a sealing liquid circulation liquid inlet threaded interface communicated with the cavity in the tank body, a sealing liquid circulation liquid outlet threaded interface which are respectively communicated with corresponding interfaces on the bearing box 8 through pipelines, the high-pressure cooling tank 7 is also provided with a heating device threaded interface communicated with the cavity in the tank body and provided with a sealing liquid heating device, an exhaust threaded interface communicated with the cavity in the tank body and provided with an exhaust valve, a liquid injection threaded interface communicated with the cavity in the tank body and provided with a liquid injection valve, a pressurization threaded interface communicated with the cavity in the tank body and provided with a pressurization valve, a liquid drainage threaded interface communicated with the cavity in the tank body and provided with a liquid drainage valve, and the high-pressure cooling tank is provided with a sealing liquid level observation window; the sealing liquid heating device can be a resistance heating pipe.

The pressure chamber head 6 in this embodiment is fixed to the bearing housing 8 and keeps the pressure chamber head 6 coaxial with the bearing mounting hole of the bearing housing 8.

The pressure cavity tail section 5 in this embodiment is installed on the pressure cavity head section 6 and makes the pressure cavity tail section 5 keep coaxial with the pressure cavity head section 6, and the top of the pressure cavity tail section 5 is provided with an oil filling hole and the bottom is provided with an oil drain hole.

The flange cover 4 in this embodiment is fixed on the pressure chamber tail section 5 and makes the flange cover 4 keep coaxial with the pressure chamber tail section 5, and the center of the flange cover 4 is processed with a bearing installation through hole, and the flange cover 4 is further processed with a runner through hole so that the leaked sealing oil can flow out to the liquid receiving chamber through the runner through hole.

Connect the liquid chamber 3 in this embodiment to install on flange cover 4 and make and connect liquid chamber 3 to keep coaxial with flange cover 4, connect 3 bottoms of liquid chamber to open to have the through-hole so that reveal during sealing oil flows out to measuring tool, and connect liquid chamber 3 still to process sealing oil and reveal observation window.

The transmission main shaft 26 in this embodiment is installed in the bearing box 8 through a pair of tapered roller bearings 25, one end of the transmission main shaft 26 is connected with the motor 16 through the driven pulley 13, the driving pulley 15 and the transmission belt 14, the other end of the transmission main shaft 26 is matched and positioned with the mandrel 24 through a central taper hole and fastened by a round nut for coaxial fixed connection, and the other end of the mandrel 24 is supported on the flange cover 4 through a rolling bearing 20.

The coaxial fixed mounting of the replaceable shaft sleeve 17 in this embodiment is on dabber 24, and the replaceable shaft sleeve 17 adopts the shaft sleeve of corresponding external diameter size and length according to surveyed double mechanical seal product specification and size.

Accompany and survey quiet ring seat 23 coaxial fixed mounting in this embodiment on bearing box 8, accompany and survey quiet ring seat 23 internally mounted and accompany and survey quiet ring, accompany and survey rotating ring 22 fixed mounting and form a pair of dynamic seal on dabber 24 and accompany and survey quiet ring cooperation.

The coaxial fixed mounting of the quiet ring seat of quilt number one 21 in this embodiment is on pressure chamber first section 6, the quiet ring seat of quilt number one 21 internally mounted of quilt has the quiet ring of quilt number one, the quiet ring seat of quilt number two 19 coaxial fixed mounting of quilt is on flange cover 4, the quiet ring seat of quilt number two 19 internally mounted of quilt is surveyed quiet ring two, but survey rotating ring 18 fixed mounting on alternate form axle sleeve 17 and with survey quiet ring one, the quiet ring two cooperations of quilt form a pair of two terminal surfaces dynamic seal.

Pressure chamber first section 6 and bearing box 8, pressure chamber end section 5 and pressure chamber first section 6, blind flange 4 and pressure chamber end section 5 in this embodiment, connect sap cavity 3 and blind flange 4, accompany and survey quiet ring seat 23 and bearing box 8, be surveyed No. one 21 of quiet ring seat and pressure chamber first section 6, be surveyed and should all install the sealing member additional when fixed mounting between quiet ring seat No. two 19 and the blind flange 4, select for use O type sealing washer.

The rotation speed sensor 10 in this embodiment is fixed to the plate 2 and measures the rotation speed of the drive spindle 26.

The pressure sensor 11 in this embodiment is mounted on the bearing housing 8 for measuring the pressure of the sealing fluid in the first section 6 of the pressure chamber.

The temperature sensor 12 in this embodiment is mounted on the bearing housing 8 for measuring the temperature of the sealing liquid in the first section 6 of the pressure chamber.

In this embodiment, the frame 1 is a steel integrally welded frame or an aluminum alloy frame, the bottom of the frame 1 is provided with a foot seat, the periphery of the frame 1 is provided with a guard plate, and the frame 1 is internally provided with a motor mounting platform.

Dull and stereotyped 2 in this embodiment adopts the casting steel plate, and dull and stereotyped 2 upper surface processes annular escape canal, and dull and stereotyped 2 fixed mounting is in frame 1.

The motor 16 in this embodiment is a variable frequency speed regulating motor, and is installed on a motor installation platform inside the rack 1.

The working principle and the working process of the test of the embodiment are as follows: the inner wall of the first section 6 of the pressure cavity, the end face of the bearing box 8, the accompany-measuring static ring seat 23, the accompany-measuring moving ring 22, the accompany-measuring static ring seat I21, the accompany-measuring moving ring 18 and the like jointly form a sealed pressure cavity, and meanwhile, the sealed pressure cavity is communicated with the inside of the high-pressure cooling tank 7 through a sealed liquid circulating liquid inlet threaded interface, a sealed liquid circulating liquid outlet threaded interface and corresponding pipelines on the bearing box 8, a thermosiphon effect can be generated between the high-pressure cooling tank 7 and the pressure cavity so that the sealed liquid in the sealed pressure cavity can automatically carry out circulating heat exchange, the sealed liquid can be injected into the sealed pressure cavity by controlling a liquid injection valve on the high-pressure cooling tank 7, the pressure of the sealed pressure cavity can be accurately controlled by controlling a pressurization valve on the high-pressure cooling tank 7, and the temperature of the sealed liquid in the sealed pressure cavity can be accurately controlled by controlling a sealed liquid heating device on the high-pressure cooling tank 7 and cooling coil cooling flow water; the inner wall of the pressure cavity tail section 5, the end surface of the pressure cavity head section 6, the measured static ring seat I21, the flange cover 4, the measured static ring seat II 19, the measured movable ring 18 and the like form a second sealing cavity together, and sealing oil can be injected into the second sealing cavity through an oil injection hole in the pressure cavity tail section 5, so that a measured mechanical sealing product is soaked in the sealing oil; when the device works, the sealing pressure cavity is filled with sealing liquid by controlling the liquid injection valve and the exhaust valve, the second sealing cavity is filled with sealing oil by controlling the oil injection hole on the tail section 5 of the pressure cavity and the oil injection hole is kept in an open state, the motor 16 drives the transmission main shaft 26 and the mandrel 24 to rotate, the measured movable ring 22 rotates along with the mandrel 24 and forms a pair of measured dynamic seals with the measured static ring, the sealing liquid pressure in the sealing pressure cavity is accurately controlled by controlling the pressurizing valve during the period, and meanwhile, the sealing liquid temperature in the pressure cavity is accurately controlled by controlling the sealing liquid heating device and the cooling coil cooling running water; the tested mechanical seal product is positioned in the seal oil of the second seal cavity, the end face of the moving ring of the tested moving ring 22, which is close to the seal pressure cavity, and the tested static ring in the tested static ring seat I21 form a pair of tested moving seals I, the tested moving seals I isolate the seal liquid in the seal pressure cavity from the seal oil in the second seal cavity, and the end face of the moving ring of the tested moving ring 22, which is close to the liquid receiving cavity 3, and the tested static ring in the tested static ring seat II 19 form a pair of tested moving seals II; if the tested dynamic seal at one end of the tested mechanical seal product leaks, sealing liquid in the seal pressure cavity seeps into the second seal cavity to cause the mixed liquid of the sealing liquid and the sealing oil to overflow from the oil filling hole on the tail section 5 of the pressure cavity, if the tested dynamic seal at the other end of the tested mechanical seal product leaks, the sealing oil in the second seal cavity seeps out and flows into the liquid receiving cavity 3 through the flange cover 4, and therefore whether the tested double-end-face mechanical seal product is qualified or not can be judged according to product standards by observing whether the leaked liquid seeps out from the oil filling hole and the liquid receiving cavity or not and carrying out weighing measurement or volume measurement on the leaked liquid; and the static pressure operation detection test of each product can be realized only by replacing the replaceable shaft sleeve 17 and the tested static ring seats 19 and 21 facing different specifications and sizes of double-end-face mechanical sealing products.

One end of a mandrel 24 of the double-end-face mechanical seal static pressure operation test bed is matched and positioned with a transmission main shaft 26 through a central taper hole, the other end of the mandrel 24 is supported on a flange cover 4 through a rolling bearing 20, and the 'simple beam' type stable supporting structure effectively reduces radial circular runout of the mandrel 24 during high-speed operation and improves the overall operation precision of the transmission main shaft 26 and the mandrel 24, so that the double-end-face mechanical seal static pressure operation test bed has the advantages of high main shaft operation precision, accurate and reliable test results and the like.

In this embodiment, a set of mechanical seal product for testing and a set of mechanical seal product to be tested are simultaneously installed on the mandrel 24 in an opposite direction, so that axial unbalance force on the transmission main shaft 26 can be effectively counteracted, and the tapered roller bearing 25 supporting the transmission main shaft 26 can bear larger axial force, so that the tapered roller bearing has the advantages of small axial unbalance force, high upper limit of allowable pressure, suitability for detection of high-pressure double-end-face mechanical seal products, and the like.

Sealed pressure chamber in this embodiment and the sealed liquid in the high-pressure cooling jar 7 feed through each other through one advances one and goes out two pipelines, and install cooling coil in the 7 inside cavities of high-pressure cooling jar and can carry out effective cooling to sealed liquid based on the thermosiphon principle, the copper pipe is chooseed for use to cooling coil, still install sealed liquid heating device on the high-pressure cooling jar 7 simultaneously and can carry out effective heating to sealed liquid and heat up, consequently, it is effectual to have circulation control by temperature change, but advantages such as accurate control sealed liquid temperature.

But this embodiment double mechanical seal static pressure operation test bench only needs corresponding design to change alternate form axle sleeve 17 and surveyed quiet ring seat 19 No. two to the double mechanical seal product test of different size specifications, 21 can realize product detection test by the quiet ring seat of survey, and all with the pipeline of the inside intercommunication of sealed pressure chamber, the sensor etc. are all installed on bearing box 8, need not repeated dismouting pipeline when making to change the surveyed mechanical seal product, spare parts such as sensor, consequently, it is good to have the equipment commonality, it is wide to be suitable for to detect the product scope, the operation maintenance is convenient, can effectively alleviate advantages such as detection test intensity of labour.

In conclusion, the double-end-face mechanical seal static pressure operation test bed has the advantages of small axial unbalanced force, capability of bearing high-pressure test detection, small radial run-out of a main shaft, actively controllable temperature of sealing liquid, good universality, simplicity and convenience in operation and the like, is very suitable for serving as standard detection equipment for carrying out double-end-face mechanical seal static pressure operation performance tests, and can effectively improve the technical level of mechanical seal detection equipment, reduce the labor intensity of mechanical seal detection tests and promote the standardization of mechanical seal detection equipment in China.

And will be apparent to those skilled in the art from the foregoing description.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Those skilled in the art can modify or supplement the described embodiments or substitute them in a similar manner without departing from the scope of the invention as defined by the claims.

Claims (9)

1. A double-end-face mechanical seal static pressure operation test bed comprises a rack (1), a flat plate (2), a liquid receiving cavity (3), a flange cover (4), a high-pressure cooling tank (7), a bearing box (8), a motor (16), a replaceable shaft sleeve (17), a mandrel (24) and a transmission main shaft (26), wherein the flat plate (2) is installed on the rack (1), the motor (16) is installed inside the rack (1), the bearing box (8) is installed on the flat plate (2), and the high-pressure cooling tank (7) is installed on the flat plate (2) through a support; the transmission main shaft (26) is arranged in the bearing box (8); one end of a transmission main shaft (26) is connected with the motor (16), the other end of the transmission main shaft (26) is matched and positioned with one end of a mandrel (24) through a central taper hole, and the other end of the mandrel (24) is supported on the flange cover (4); but substitution axle sleeve (17) coaxial fixed mounting on dabber (24), its characterized in that: the pressure cavity head section (6) is mounted on a bearing box (8) and enables the pressure cavity head section (6) to be coaxial with a bearing mounting hole of the bearing box (8), the pressure cavity tail section (5) is mounted on the pressure cavity head section (6) and enables the pressure cavity tail section (5) to be coaxial with the pressure cavity head section (6), the flange cover (4) is mounted on the pressure cavity tail section (5) and enables the flange cover (4) to be coaxial with the pressure cavity tail section (5), and the liquid receiving cavity (3) is mounted on the flange cover (4) and enables the liquid receiving cavity (3) to be coaxial with the flange cover (4); the accompany-measuring static ring seat (23) is coaxially fixed on the bearing box (8), an accompany-measuring static ring is arranged in the accompany-measuring static ring seat (23), and an accompany-measuring moving ring (22) is fixed on the mandrel (24) and matched with the accompany-measuring static ring to form a pair of moving seals; by survey quiet ring holder (21) coaxial arrangement on pressure chamber first section (6), should be surveyed quiet ring holder (21) internally mounted and surveyed quiet ring one, by survey quiet ring holder No. two (19) coaxial arrangement on blind flange (4), should be surveyed quiet ring holder No. two (19) internally mounted and surveyed quiet ring two, surveyed rotating ring (18) are fixed on replaceable axle sleeve (17) and with surveyed quiet ring one, be surveyed quiet ring two cooperation formation a pair of two terminal surface dynamic seal.

2. The double mechanical seal hydrostatic running test stand of claim 1, wherein: the device is characterized by further comprising a rotating speed sensor (10), wherein the rotating speed sensor (10) is installed on the flat plate (2).

3. The double mechanical seal hydrostatic running test stand of claim 1, wherein: the bearing box further comprises a pressure sensor (11), and the pressure sensor (11) is installed on the bearing box (8).

4. The double mechanical seal hydrostatic running test stand of claim 1, wherein: the bearing box further comprises a temperature sensor (12), and the temperature sensor (12) is installed on the bearing box (8).

5. The double mechanical seal hydrostatic running test stand of claim 1, wherein: the bearing box (8) is provided with a bearing mounting hole for mounting and supporting a transmission main shaft (26), the bearing box (8) is also provided with a pressure sensor mounting interface and a temperature sensor mounting interface which are directly communicated with the first section (6) of the pressure cavity, and the bearing box (8) is also provided with two pipeline interfaces which are directly communicated with the first section (6) of the pressure cavity and are respectively communicated with the high-pressure cooling tank (7) through a pipeline which enters and exits.

6. The double mechanical seal hydrostatic running test stand of claim 1, wherein: sealing liquid in high pressure cooling tank (7) and the first section of pressure chamber (6) feeds through each other through entering one and going out two pipelines, and installs the cooling coil who carries out effective cooling to sealing liquid and carry out the sealing liquid heating device that effective heating heaied up to sealing liquid in high pressure cooling tank (7) inside cavity.

7. The double mechanical seal hydrostatic running test stand of claim 1, wherein: the machine frame (1) is a section steel integral welding machine frame or an aluminum alloy section bar machine frame, a mounting foot seat at the bottom of the machine frame (1), a protective plate arranged around the machine frame (1) and a motor mounting platform arranged inside the machine frame (1) are arranged.

8. The double mechanical seal static pressure operation test stand of claim 1, characterized in that: the flat plate (2) is made of a cast thick steel plate.

9. The double mechanical seal hydrostatic running test stand of claim 1, wherein: the motor (16) adopts a variable-frequency speed-regulating motor.

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