CN218347531U - Labyrinth compressor sealing performance test device - Google Patents
Labyrinth compressor sealing performance test device Download PDFInfo
- Publication number
- CN218347531U CN218347531U CN202221877567.3U CN202221877567U CN218347531U CN 218347531 U CN218347531 U CN 218347531U CN 202221877567 U CN202221877567 U CN 202221877567U CN 218347531 U CN218347531 U CN 218347531U
- Authority
- CN
- China
- Prior art keywords
- piston
- sealing performance
- test device
- performance test
- labyrinth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a compressor technical field specifically is a labyrinth compressor sealing performance test device, and it can conveniently realize the test of labyrinth throttle and gas leakage, and it includes crankcase transmission case and cylinder, be provided with the bent axle in the crankcase transmission case, the bent axle passes through connecting rod drive mechanism and connects piston rod one end, install on the piston rod and be located the piston in the cylinder piston chamber, piston chamber upper end intercommunication inlet channel and exhaust passage, be provided with in the cylinder with piston rod complex stuffing box, be provided with the filler in the stuffing box, the piston surface with piston intracavity wall leaves the clearance for profile of tooth and between the two, its characterized in that, piston chamber lower extreme end intercommunication leakage gas measurement chamber, measure the chamber and install flow sensor.
Description
Technical Field
The utility model relates to a compressor technical field specifically is a labyrinth compressor sealing performance test device.
Background
The labyrinth compressor is a novel compressor which adopts non-contact labyrinth sealing technology between a piston and a cylinder wall and between a piston rod and a filler. The labyrinth piston compressor has non-contact sealing structure, piston and stuffing sealed via labyrinth, and air sucking, compressing and exhausting work cycle. Because of the labyrinth non-contact sealing, in actual use, trace gas hardly passes through a gap between a piston and a cylinder wall, and labyrinth throttling and gas leakage tests in the reciprocating motion process are necessary, so that design basis and data verification are provided for improving the sealing performance of a labyrinth compressor, improving the compression efficiency and reducing the energy consumption, and the conventional test device cannot conveniently test.
Disclosure of Invention
In order to solve the problem that the unable convenient labyrinth piston sealing performance monitoring of carrying on of current labyrinth compressor piston department, the utility model provides a labyrinth compressor sealing performance test device, it can conveniently realize the test of labyrinth throttle and gas leakage.
The technical scheme is as follows; the utility model provides a labyrinth compressor sealing performance test device, its includes crankcase transmission case and cylinder, be provided with the bent axle in the crankshaft transmission case, the bent axle passes through connecting rod drive mechanism and connects piston rod one end, install on the piston rod and be located the piston in the cylinder piston chamber, piston chamber upper end intercommunication admission passage and exhaust passage, be provided with in the cylinder with piston rod complex gland packing, be provided with the filler in the gland packing, the piston surface with piston chamber inner wall leaves the clearance for profile of tooth and between the two, its characterized in that, piston chamber lower extreme end intercommunication leakage gas measures the chamber, measure the chamber and install flow sensor.
The piston is further characterized in that at least two pressure sensors which are staggered in the axial direction are arranged on the side wall of the piston;
the measuring cavity is also provided with a pressure relief valve and a pressure gauge;
the cylinder is positioned at the upper end of the piston rod, a housing is arranged on the cylinder, and a displacement sensor is arranged on the inner wall of the housing;
the stuffing boxes comprise an upper stuffing box and a lower stuffing box which are positioned at two ends of the piston, and the stuffing is arranged in the stuffing boxes in a floating manner;
the piston rod is provided with a platform stage, the lower end of the piston props against the step surface of the platform stage, and the upper end of the piston is fixed through a locking nut arranged on the piston rod;
the outer wall of the piston is sleeved with a shell, and the outer surface of the shell and the inner wall of the piston cavity are in tooth shapes with different sizes;
the piston comprises a middle shaft sleeve, the end part of the middle shaft sleeve is connected with the middle part of the disc body, the end part of the disc body is connected with the ring body, a dead zone is formed between the middle shaft sleeve and the ring body, and the middle shaft sleeve, the disc body and the ring body are of an integrated structure;
the casing passes through the fix with screw in the ring body, the ring body lateral wall with the pressure sensor mounting hole has been seted up at the shell lateral wall labyrinth tooth bottom.
After the utility model is adopted, when the labyrinth compressor works, the gas on the compression side of the piston has the tendency of leaking to the non-compression side, when a small amount of compressed gas leaks to the clearance between the piston and the inner wall of the piston cavity, each labyrinth tooth cavity can form a throttling cavity, the pressure of the gas gradually attenuates through a plurality of throttling cavities until the pressure is equivalent to that of the non-compression side, and the piston is provided with a pressure sensor which can detect the pressure value of the labyrinth throttling cavity and test the throttling effect of the labyrinth; the gas after the labyrinth throttling and pressure relief possibly enters the measuring cavity in a very small amount, and the gas leakage flow can be detected through the flow sensor, so that the leakage amount in a certain time can be known, and the gas leakage test is conveniently realized; further, the radial displacement of the piston can be obtained by detecting the displacement of the piston rod through a displacement sensor, and multi-azimuth data are provided to know the sealing performance.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of a piston structure;
fig. 3 is an enlarged schematic view of the piston and the inner wall of the piston cavity.
Detailed Description
See fig. 1, fig. 2, fig. 3 shows, a labyrinth compressor sealing performance test device, it includes crankcase transmission case 1 and cylinder 2, be provided with bent axle 3 in the crankcase transmission case 1, bent axle 3 passes through connecting rod drive mechanism 4 and connects piston rod 5 one end, install the piston 7 that is located piston cavity 6 in the cylinder 2 on the piston rod 5, 6 one end intercommunication inlet channel 8 and exhaust passage 9 in the piston cavity, be provided with the stuffing box with piston rod 5 complex in the cylinder 2, the stuffing box is including last stuffing box 10 and lower stuffing box 11 that are located the piston both ends, filler 12 floats and sets up in the stuffing box, 6 other ends intercommunication measurement chamber 13 in the piston cavity, measurement chamber 13 installs flow sensor 14 and relief valve 15.
Two pressure sensors 16 which are arranged along the axial direction in a staggered way are arranged on the side wall of the piston 7, and the pressure difference exists between the two ends of the piston, so that the measurement is carried out through the two pressure sensors 16.
And a housing 17 is arranged on the cylinder 2 at the other end of the piston rod 5, and a displacement sensor 18 is arranged on the inner wall of the housing 17, so that the radial displacement of the piston rod 5 can be detected, and the swinging condition of the piston can be known.
The piston rod 5 is provided with a stage, one end of the piston is abutted against the step surface of the stage, and the other end of the piston is fixed through a locking nut 19 arranged on the piston rod 5.
The outer wall of the piston 7 is sleeved with a shell 20, the outer surface of the shell 20 and the inner wall of the piston cavity 6 are in tooth shapes with different sizes, a gap is reserved between the outer surface of the shell 20 and the inner wall of the piston cavity, when a small amount of compressed gas leaks to the gap between the piston and the inner wall of the piston cavity, each labyrinth tooth cavity can form a throttling cavity, under a certain small gap, a small part of medium flows from a high-pressure side to a low-pressure side through each throttling point, when the medium passes through each node, the gas converts pressure energy into kinetic energy, after the gas enters a tooth space, due to sudden expansion of volume, the gas speed drops rapidly (nearly to zero), one part of the kinetic energy is converted into heat energy, and the other part of the kinetic energy is converted into vortex energy. Through the repeated action of the continuously and uniformly distributed throttling and the tooth socket vortex chamber, the pressure of the leaked gas is reduced to the low-pressure side pressure, and the requirement of gas tightness is met.
The piston 7 comprises a middle shaft sleeve 7-1 which is used for being in key fit with the piston rod 5, the end part of the middle shaft sleeve 7-1 is connected with the middle part of the disk body 7-2, the end part of the disk body 7-2 is connected with the ring body 7-3, a vacant area is arranged between the middle shaft sleeve 7-1 and the ring body 7-3 to play a role in weight reduction, and the middle shaft sleeve 7-1, the disk body 7-2 and the ring body 7-3 are of an integrated structure.
The shell 20 is fixed on the ring body through screws 21, the installation and the replacement are convenient, and pressure sensor mounting holes 22 are formed in the side wall of the ring body 7-3 and the side wall of the shell 20.
The shell 20 can be changed, on the one hand when the shell 20 wearing and tearing are serious, only need to change shell 20, and inside piston body still can continue to use, reduce cost, and on the other hand, when testing, can change different profile of tooth's shell 20 and do the contrast experiment, the cost is reduced equally.
Claims (9)
1. The utility model provides a labyrinth compressor sealing performance test device, its includes crankcase transmission case and cylinder, be provided with the bent axle in the crankcase transmission case, the bent axle passes through connecting rod drive mechanism and connects piston rod one end, install on the piston rod and be located the piston in the cylinder piston chamber, piston chamber upper end intercommunication inlet channel and exhaust passage, be provided with in the cylinder with piston rod complex gland packing, be provided with the filler in the gland packing, the piston surface with piston intracavity wall leaves the clearance for profile of tooth and between the two, its characterized in that, piston chamber lower extreme end intercommunication leaks the gas measurement chamber, measure the chamber and install flow sensor.
2. The labyrinth compressor sealing performance test device as claimed in claim 1, wherein the piston side wall is provided with at least two pressure sensors which are arranged along the axial direction in a staggered manner.
3. The labyrinth compressor sealing performance test device as claimed in claim 1, wherein the measurement chamber is further provided with a pressure relief valve and a pressure gauge.
4. The labyrinth compressor sealing performance test device as claimed in claim 1, wherein, the cylinder is located at the upper end of the piston rod, a housing is installed on the cylinder, and a displacement sensor is installed on the inner wall of the housing.
5. The labyrinth compressor sealing performance test device as claimed in claim 1, wherein the stuffing box comprises an upper stuffing box and a lower stuffing box which are arranged at two ends of the piston, and the stuffing is arranged in the stuffing box in a floating manner.
6. The labyrinth compressor sealing performance test device as claimed in claim 1, wherein the piston rod is provided with a stage, the lower end of the piston abuts against a step surface of the stage, and the upper end of the piston is fixed by a lock nut mounted on the piston rod.
7. The labyrinth compressor sealing performance test device as claimed in claim 1, wherein the outer wall of the piston is sleeved with a housing, and the outer surface of the housing and the inner wall of the piston cavity are in tooth shapes with different sizes.
8. The labyrinth compressor sealing performance test device as claimed in claim 7, wherein the piston includes a middle shaft sleeve, the middle shaft sleeve end is connected with the middle of the disk body, the disk body end is connected with the ring body, a vacant area is formed between the middle shaft sleeve and the ring body, and the middle shaft sleeve, the disk body and the ring body are of an integrated structure.
9. The labyrinth compressor sealing performance test device as claimed in claim 8, wherein the casing is fixed to the ring body by screws, and the side wall of the ring body and the labyrinth tooth bottom of the side wall of the casing are provided with pressure sensor mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221877567.3U CN218347531U (en) | 2022-07-21 | 2022-07-21 | Labyrinth compressor sealing performance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221877567.3U CN218347531U (en) | 2022-07-21 | 2022-07-21 | Labyrinth compressor sealing performance test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218347531U true CN218347531U (en) | 2023-01-20 |
Family
ID=84911921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221877567.3U Active CN218347531U (en) | 2022-07-21 | 2022-07-21 | Labyrinth compressor sealing performance test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218347531U (en) |
-
2022
- 2022-07-21 CN CN202221877567.3U patent/CN218347531U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104126072B (en) | High pressure sealing passage | |
| CN218347531U (en) | Labyrinth compressor sealing performance test device | |
| CN109441793B (en) | Method for obtaining p-V diagram of reciprocating compressor by measuring strain of piston rod | |
| CN205080045U (en) | O shape circle friction test device | |
| CN115468716A (en) | Labyrinth compressor sealing performance testing device and testing method | |
| CN216950909U (en) | Chloromethane and chloroethylene high-speed centrifugal turbine compressor | |
| CN218347529U (en) | Piston structure for labyrinth compressor | |
| CN112145449B (en) | Axial force testing device for piston type impeller of centrifugal pump | |
| CN207526664U (en) | A kind of semi-hermetic reciprocating refrigeration compressor | |
| CN208934876U (en) | A kind of compression assembly and compressor | |
| CN209228637U (en) | Dry type oil free screw air compressor machine gas control intake valve | |
| CN203570528U (en) | Non-leakage piston compressor padding | |
| CN204729258U (en) | The universal filler device of gas compressor with reciprocating | |
| CN108468632B (en) | Device for leading out pressure in cylinder of compressor | |
| CN105927542A (en) | Rotor shaft seal structure for double-screw compressor | |
| CN201180670Y (en) | Bearing package in air inflow channel of compressor | |
| CN206707998U (en) | A kind of detection means of the radial displacement of three screw pump discharge chamber driven screw | |
| CN105952681A (en) | Balance gas cavity type shaft end sealing mechanism and sealing gas adjustment device of compressor | |
| CN218271268U (en) | Testing system of rotary sealing structure | |
| CN216815917U (en) | Oil leakage detection assembly of supercharger | |
| CN117191286B (en) | Sealing element performance system for simultaneously detecting multiple pressure states of circulating liquid seal cylinder | |
| CN102628374A (en) | Improved screw rod expansion machine | |
| CN213116588U (en) | Double-cylinder integral crankcase structure of automobile air compressor | |
| CN220566245U (en) | Exhaust structure of rotor type compressor | |
| CN216407206U (en) | Gas isolation sealing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |