CN211317740U - A liquid rocket engine throttle ring test bench system - Google Patents

Abstract

The utility model discloses a liquid rocket engine choke ring test bench system, comprising an air supply unit, a water supply unit and a detection unit; the air supply unit includes an air compressor and a general air supply pipe, and the main air supply pipe is arranged with air flow directions in sequence. The first filter, the manual ball valve, the air-driven gas pressure reducing valve, the second filter, the first pneumatic high-pressure ball valve and the second pneumatic high-pressure ball valve, the water supply unit includes a water purifier, a water storage tank, a drainage pool and a water supply pipe, and the water supply pipe There are pneumatic ball valve, fourth filter, fourth pneumatic high pressure ball valve, liquid check valve, fifth pneumatic high pressure ball valve, sixth pneumatic high pressure ball valve, fifth filter, flow Gauge and gas driven liquid back pressure valve. The system of the utility model is simple in structure, reasonable in design and convenient in implementation, can be effectively applied in the flow rate qualification rate detection of the throttle ring of a liquid rocket engine, fully simulates the on-site working conditions of the product, has good use effect, and is convenient for popularization and use.

Description

A liquid rocket engine throttle ring test bench system

technical field

The utility model belongs to the technical field of engine testing, in particular to a liquid rocket engine throttle ring test bench system.

Background technique

Liquid rocket engine system components can be basically divided into two categories according to their functions: the first category is working medium transmission and control components, mainly including gas-liquid pipelines, throttle rings, valves and nozzles and other components, which have small inertia and respond to The time is relatively short; the second category is the components that contain energy conversion, mainly including hydrogen-oxygen turbopumps, gas generators and combustion chambers, which have large inertia and relatively long response times. In the liquid rocket engine, the first type of components can be divided into liquid pipelines, gas pipelines and gas-liquid mixing pipelines according to the state of the flowing working medium, as well as the throttle ring as a control and restriction element in the pipeline, Components such as valves and nozzles. The choke ring test bench is a test platform for studying the flow rate of the rocket thrust chamber choke coil products. By simulating the product on-site working conditions, building the mechanical process structure, designing the electrical control and test acquisition system, and realizing the electrical control of the field equipment, and Complete signal acquisition for various sensors.

Utility model content

The technical problem to be solved by the utility model is to provide a liquid rocket engine throttle ring test bench system, which is simple in structure, reasonable in design, convenient in realization, and can be effectively applied to the throttle ring of the liquid rocket engine, aiming at the deficiencies in the above-mentioned prior art. In the flow pass rate detection of the loop, the on-site working conditions and environment of the product are fully simulated, and the use effect is good, which is convenient for promotion and use.

In order to solve the above-mentioned technical problems, the technical solution adopted by the present utility model is: a liquid rocket engine throttle ring test bench system, including an air supply unit, a water supply unit and a detection unit; the air supply unit includes an air compressor, and the A main air supply pipe is connected to the compressed air output end of the air compressor, and the main air supply pipe is sequentially provided with a first filter, a manual ball valve, an air-driven gas pressure reducing valve, a second filter, and a first pneumatic The high-pressure ball valve and the second pneumatic high-pressure ball valve are connected with a first air supply pipe and a second air supply pipe for supplying air to each pneumatic high-pressure ball valve. An air supply pipe and a third air supply pipe for blowing and supplying air for the test piece; the first air supply pipe is provided with a third pneumatic high-pressure ball valve, a first constant pressure reducing valve and a first safety valve in sequence with the airflow direction The first constant pressure relief valve is connected to the gas drive gas relief valve through a first communication pipe, the first communication pipe is provided with a first electronic pressure regulator, and the first gas supply pipe is provided with There is a second electronic pressure regulator, the second electronic pressure regulator is located on the side of the first safety valve away from the first constant pressure reducing valve, and the second air supply pipe is provided with a second constant pressure reducing valve , the third air supply pipe is provided with a third constant pressure relief valve, a manual cut-off valve and a third filter in sequence with the direction of the air flow; the water supply unit includes a water purifier, a water storage tank and a drainage pool, and the purifier The clean water outlet end of the water device is connected with a water supply pipe, the end of the water supply pipe and the drainage pool are both connected with the first air supply pipe, and the water supply pipe is sequentially provided with a pneumatic ball valve, The fourth filter, the fourth pneumatic high pressure ball valve, the liquid check valve, the fifth pneumatic high pressure ball valve, the sixth pneumatic high pressure ball valve, the fifth filter, the flow meter and the gas driven liquid back pressure valve, the water storage tank is communicated through the second The pipe is connected to a section of the general air supply pipe between the first pneumatic high-pressure ball valve and the second pneumatic high-pressure ball valve. The second communication pipe is provided with a second safety valve, located between the liquid check valve and the fifth pneumatic high-pressure ball valve. A section of the water supply pipe is connected to the water storage tank through a third communication pipe, and a section of the water supply pipe between the flow meter and the gas-driven liquid back pressure valve is connected to the first air supply pipe through a fourth communication pipe. A seventh pneumatic high-pressure ball valve is arranged on the communication pipe; the detection unit includes a first pressure transmitter, a second pressure transmitter, a third pressure transmitter, a fourth pressure transmitter, and a fifth pressure transmitter , the sixth pressure transmitter, the seventh pressure transmitter, the eighth pressure transmitter, the liquid level transmitter and the temperature transmitter, the first pressure transmitter is arranged on the first filter and the manual ball valve On a section of the main gas supply pipe between the two pressure transmitters, the second pressure transmitter is arranged on a section of the main gas supply pipe between the gas drive gas pressure reducing valve and the second filter, and the third pressure transmitter is arranged on the first section of the main gas supply pipe. A section of the main gas supply pipe between a pneumatic high pressure ball valve and a second pneumatic high pressure ball valve, the fourth pressure transmitter is arranged on a section of the first gas supply pipe between the first safety valve and the second electronic pressure regulator , the fifth pressure transmitter is arranged on the second air supply pipe, the sixth pressure The force transmitter is arranged on a section of the third air supply pipe between the third constant pressure reducing valve and the manual shut-off valve, and the seventh pressure transmitter is arranged on a section of water supply between the fifth filter and the flow meter The eighth pressure transmitter is set on a section of the water supply pipe between the seventh pressure transmitter and the flowmeter, the liquid level transmitter is set on the water storage tank, and the temperature transmitter is set on the third connecting pipe.

The above-mentioned liquid rocket engine throttle ring test bench system also includes a control unit, the control unit includes a host computer, an industrial computer, an industrial switch, a PLC controller and a data acquisition card, the host computer, the industrial computer, the PLC The controller and the data acquisition card are connected to the industrial switch, the PLC controller is connected to the data acquisition card, the first pressure transmitter, the second pressure transmitter, the third pressure transmitter, the fourth pressure transmitter The pressure transmitter, the fifth pressure transmitter, the sixth pressure transmitter, the liquid level transmitter and the temperature transmitter are all connected with the input end of the PLC controller. Both the pressure transmitter and the flowmeter are connected to the input end of the data acquisition card, and the first electronic pressure regulator and the second electronic pressure regulator are both connected to the output end of the PLC controller.

In the above-mentioned liquid rocket engine throttle ring test bench system, the throttle ring to be tested is placed between the seventh pressure transmitter and the eighth pressure transmitter.

In the above-mentioned liquid rocket engine throttle ring test bench system, the OPC communication mode is adopted between the PLC controller and the data acquisition card.

Compared with the prior art, the utility model has the following advantages:

1. The system of the present invention is simple in structure, reasonable in design and convenient in implementation.

2. The utility model adjusts the air pressure in the first air supply pipe through the first constant pressure reducing valve, adjusts the air pressure in the second air supply pipe through the second constant pressure reducing valve, and adjusts the third air pressure through the third constant pressure reducing valve. The air pressure in the branch air supply pipe realizes the precise control of the air pressure of each air supply pipeline in the air supply unit.

3. In the present invention, the seventh pressure transmitter is set before the throttle ring to be tested, and the eighth pressure transmitter and flowmeter are set after the throttle ring to be tested, so as to realize accurate liquid flow characteristics of the throttle ring to be tested. stable acquisition.

4. The utility model can be effectively applied in the flow rate qualification rate detection of the throttle ring of the liquid rocket engine, fully simulates the on-site working conditions of the product, has good use effect, and is easy to popularize and use.

To sum up, the system of the utility model is simple in structure, reasonable in design and convenient in implementation, can be effectively applied in the detection of the flow rate qualification rate of the throttle ring of a liquid rocket engine, fully simulates the on-site working conditions of the product, has good use effect, and is easy to popularize and use. .

The technical solutions of the present utility model will be described in further detail below through the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is the system principle schematic diagram of the present invention;

Fig. 2 is the principle block diagram of the control unit of the present invention.

Explanation of reference numbers:

1—Air compressor; 2—General air supply pipe; 3—First filter;

4—manual ball valve; 5—gas drive gas pressure reducing valve; 6—second filter;

7—the first pneumatic high-pressure ball valve; 8—the second pneumatic high-pressure ball valve; 9—the first air supply pipe;

10—the second air supply pipe; 11—the third air supply pipe; 12—the third pneumatic high pressure ball valve;

13—the first constant pressure reducing valve; 14—the first safety valve; 15—the first communication pipe;

16—the first electronic pressure regulator; 17—the second electronic pressure regulator; 18—the second constant pressure reducing valve;

19—the third constant pressure reducing valve; 20—manual stop valve; 21—the third filter;

22—water purifier; 23—water storage tank; 24—drainage pool;

25—water supply pipe; 26—pneumatic ball valve; 27—fourth filter;

28—the fourth pneumatic high pressure ball valve; 29—liquid check valve; 30—the fifth pneumatic high pressure ball valve;

31—Sixth pneumatic high pressure ball valve; 32—Fifth filter; 33—Flowmeter;

34—Air-driven liquid back pressure valve; 35—Second communication pipe; 36—Second safety valve;

37—the third connecting pipe; 38—the fourth connecting pipe; 39—the seventh pneumatic high pressure ball valve;

40—the first pressure transmitter; 41—the second pressure transmitter; 42—the third pressure transmitter;

43—the fourth pressure transmitter; 44—the fifth pressure transmitter; 45—the sixth pressure transmitter;

46—the seventh pressure transmitter; 47—the eighth pressure transmitter; 48—the liquid level transmitter;

49—temperature transmitter; 50—host computer; 51—industrial computer;

52—industrial switchboard; 53—PLC controller; 54—data acquisition card.

Detailed ways

As shown in FIG. 1, the liquid rocket engine throttle ring test bench system of the present invention includes an air supply unit, a water supply unit and a detection unit; the air supply unit includes an air compressor 1, and the compression of the air compressor 1 A main air supply pipe 2 is connected to the air output end, and the main air supply pipe 2 is sequentially provided with a first filter 3, a manual ball valve 4, an air-driven gas pressure reducing valve 5, a second filter 6, a first The pneumatic high-pressure ball valve 7 and the second pneumatic high-pressure ball valve 8 are connected with a first gas supply pipe 9 on a section of the main gas supply pipe 2 between the manual ball valve 4 and the gas-driven gas pressure reducing valve 5, and are used for each pneumatic high-pressure valve. The second air supply pipe 10 for supplying air to the ball valve and the third air supply pipe 11 for blowing and supplying air for the test piece; the first air supply pipe 9 is sequentially provided with a third pneumatic high-pressure ball valve 12, The first constant pressure reducing valve 13 and the first safety valve 14, the first constant pressure reducing valve 13 is connected with the driving gas pressure reducing valve 5 through the first communication pipe 15, and the first communication pipe 15 is provided with There is a first electronic pressure regulator 16, the first air supply pipe 9 is provided with a second electronic pressure regulator 17, the second electronic pressure regulator 17 is located in the first safety valve 14 away from the first constant pressure decompression On one side of the valve 13, the second air supply pipe 10 is provided with a second constant pressure relief valve 18, and the third air supply pipe 11 is provided with a third constant pressure relief valve 19, Manual cut-off valve 20 and third filter 21; the water supply unit includes a water purifier 22, a water storage tank 23 and a drainage pool 24, the clean water outlet end of the water purifier 22 is connected with a water supply pipe 25, and the water supply pipe The end of 25 and the drainage pool 24 are connected to the first air supply pipe 9, and the water supply pipe 25 is sequentially provided with a pneumatic ball valve 26, a fourth filter 27, a fourth pneumatic ball valve 26 in the direction from the water purifier 22 to the drainage pool 24 High-pressure ball valve 28, liquid check valve 29, fifth pneumatic high-pressure ball valve 30, sixth pneumatic high-pressure ball valve 31, fifth filter 32, flow meter 33 and gas-driven liquid back pressure valve 34, the water storage tank 23 is communicated through the second The pipe 35 is connected to a section of the general air supply pipe 2 between the first pneumatic high-pressure ball valve 7 and the second pneumatic high-pressure ball valve 8. The second communication pipe 35 is provided with a second safety valve 36, which is located between the liquid check valve 29 and the liquid check valve 29. A section of the water supply pipe 25 between the fifth pneumatic high-pressure ball valve 30 is connected to the water storage tank 23 through a third communication pipe 37, and a section of the water supply pipe 25 between the flow meter 33 and the gas-driven liquid back pressure valve 34 passes through the fourth communication pipe 37. The communication pipe 38 is connected with the first air supply pipe 9, and the fourth communication pipe 38 is provided with a seventh pneumatic high-pressure ball valve 39; the detection unit includes a first pressure transmitter 40, a second pressure transmitter 41, The third pressure transmitter 42, the fourth pressure transmitter 43, the fifth pressure transmitter 44, the sixth pressure transmitter 45, the seventh pressure transmitter 46, the eighth pressure transmitter 47, the liquid level A transmitter 48 and a temperature transmitter 49, the first pressure transmitter 40 is arranged on a section of the general gas supply pipe 2 between the first filter 3 and the manual ball valve 4, the The second pressure transmitter 41 is arranged on a section of the general gas supply pipe 2 between the gas drive gas pressure reducing valve 5 and the second filter 6 , and the third pressure transmitter 42 is arranged on the first pneumatic high pressure ball valve 7 and the second filter 6 . On a section of the main gas supply pipe 2 between the second pneumatic high pressure ball valve 8 , the fourth pressure transmitter 43 is arranged on a section of the first gas supply pipe 9 between the first safety valve 14 and the second electronic pressure regulator 17 Above, the fifth pressure transmitter 44 is arranged on the second gas supply pipe 10 , and the sixth pressure transmitter 45 is arranged in a first section between the third constant pressure reducing valve 19 and the manual shut-off valve 20 . On the three air supply pipes 11, the seventh pressure transmitter 46 is arranged on a section of the water supply pipe 25 between the fifth filter 32 and the flow meter 33, and the eighth pressure transmitter 47 is arranged at the seventh pressure On a section of the water supply pipe 25 between the transmitter 46 and the flow meter 33 , the liquid level transmitter 48 is provided on the water storage tank 23 , and the temperature transmitter 49 is provided on the third communication pipe 37 .

In the specific implementation, the air source of the air supply unit provides driving for each pneumatic element on the one hand, and on the other hand, adjusts the front-end air source pressure by controlling each pneumatic high-pressure ball valve and adjusting the electronic pressure reducing valve, and then injects it into the water storage tank 23 to indirectly adjust the water storage tank. The pressure in 23 is sent to the water supply pipe 25, wherein the air pressure in the first air supply pipe 9 is adjusted by the first constant pressure relief valve 13, and the air pressure in the second air supply pipe 10 is adjusted by the second constant pressure relief valve 18, The air pressure in the third air supply pipe 11 is adjusted through the third constant pressure reducing valve 19, and the air pressure is adjusted to 0.8 MPa.

As shown in FIG. 2, the liquid rocket engine throttle ring test bench system of the present invention further includes a control unit, the control unit includes a host computer 50, an industrial computer 51, an industrial switch 52, a PLC controller 53 and a data acquisition card 54. The upper computer 50, the industrial computer 51, the PLC controller 53 and the data acquisition card 54 are all connected to the industrial switch 52, the PLC controller 53 is connected to the data acquisition card 54, and the first pressure transmitter 40, second pressure transmitter 41, third pressure transmitter 42, fourth pressure transmitter 43, fifth pressure transmitter 44, sixth pressure transmitter 45, liquid level transmitter 48 and The temperature transmitter 49 is connected to the input end of the PLC controller 53, the seventh pressure transmitter 46, the eighth pressure transmitter 47 and the flow meter 33 are all connected to the input end of the data acquisition card 54, the Both the first electronic pressure regulator 16 and the second electronic pressure regulator 17 are connected to the output end of the PLC controller 53 .

In specific implementation, the PLC controller 53 is a Siemens PLC, including a power supply module PS307, a CPU315-2DP, an Ethernet CP-343 module, a digital output module (DO), an analog input module (AI), and an analog output module (AO). ), the data acquisition card 54 is a National Instruments (NI) data acquisition card.

In this embodiment, a throttle ring to be tested is placed between the seventh pressure transmitter 46 and the eighth pressure transmitter 47 .

In this embodiment, the OPC communication mode is adopted between the PLC controller 53 and the data acquisition card 54 .

When the utility model is used, firstly open the pneumatic ball valve 26, the water source in the water purifier 22 passes through the fourth filter 27, and at the same time, open the fourth pneumatic high-pressure ball valve 28, so that the water source enters the water storage tank 23 through the liquid check valve 29. At this time, the fifth pneumatic high pressure ball valve 30 and the sixth pneumatic high pressure ball valve 31 are both in a closed state. After the liquid level transmitter 48 detects that the standard water volume in the water storage tank 23 is reached, the fourth pneumatic high pressure ball valve 28 is closed, and the water adding process ends. Entering the boosting link, the air source pressure of the air compressor 1 is set to 24MPa, the manual ball valve 4 is opened, and the first constant pressure reducing valve 13, the second constant pressure reducing valve 18 and the third constant pressure reducing valve 19 function. Then, open the first pneumatic high-pressure ball valve 7 on the main air supply pipe 2, close the second pneumatic The high-pressure ball valve 8 is controlled by adjusting the parameters of the first electronic pressure regulator 16 to control the air-driven gas pressure reducing valve 5, so that the air pressure in the main gas supply pipe 2 is 21.9MPa, and then the fifth pneumatic high-pressure ball valve 30 and the sixth pneumatic high-pressure ball valve are opened. 31, and control the gas-driven liquid back pressure valve 34 by adjusting the parameters of the second electronic pressure regulator 17, and set the pressure value of the second electronic pressure regulator 17 to 7.9MPa. Entering the test link, the seventh pressure transmitter 46 and the eighth pressure transmitter 47 collect the pressure values on both sides of the throttle ring to be tested, and record the data of the flowmeter 33 and compare it with the product standard of the throttle ring to obtain the Flow coil product qualification.

The above are only preferred embodiments of the present utility model, and do not limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to the scope of the present utility model. within the protection scope of the technical solution of the present utility model.

Claims (4)

1. a liquid rocket motor throttle ring test-bed system, is characterized in that: comprise air supply unit, water supply unit and detection unit; The air supply unit comprises an air compressor (1), a compressed air output end of the air compressor (1) is connected with a general air supply pipe (2), and the general air supply pipe (2) is arranged in sequence according to the direction of the air flow There are a first filter (3), a manual ball valve (4), a gas-driven gas pressure reducing valve (5), a second filter (6), a first pneumatic high-pressure ball valve (7) and a second pneumatic high-pressure ball valve (8) , a first gas supply pipe (9) is connected to a section of the main gas supply pipe (2) between the manual ball valve (4) and the air-driven gas pressure reducing valve (5), and is used to supply air for each pneumatic high-pressure ball valve The second air supply pipe (10) and the third air supply pipe (11) for blowing and supplying air for the test piece; the first air supply pipe (9) is sequentially provided with a third pneumatic high pressure along with the airflow direction A ball valve (12), a first constant pressure reducing valve (13) and a first safety valve (14), the first constant pressure reducing valve (13) is decompressed with the driving gas through a first communication pipe (15) The valve (5) is connected, the first communication pipe (15) is provided with a first electronic pressure regulator (16), and the first air supply pipe (9) is provided with a second electronic pressure regulator (17) , the second electronic pressure regulator (17) is located on the side of the first safety valve (14) away from the first constant pressure reducing valve (13), and the second air supply pipe (10) is provided with a second A constant pressure reducing valve (18), wherein a third constant pressure reducing valve (19), a manual shut-off valve (20) and a third filter (21) are sequentially arranged on the third air supply pipe (11) along the air flow direction ); The water supply unit includes a water purifier (22), a water storage tank (23) and a drainage pool (24), and a clean water outlet end of the water purifier (22) is connected with a water supply pipe (25), and the water supply pipe ( The end of 25) and the drainage pool (24) are both connected to the first air supply pipe (9), and a pneumatic ball valve is sequentially arranged on the water supply pipe (25) from the water purifier (22) to the drainage pool (24). (26), the fourth filter (27), the fourth pneumatic high pressure ball valve (28), the liquid check valve (29), the fifth pneumatic high pressure ball valve (30), the sixth pneumatic high pressure ball valve (31), the fifth filter The water storage tank (23) is connected with the first pneumatic high pressure ball valve (7) and the second pneumatic high pressure through the second communication pipe (35). A section of the main air supply pipe (2) between the ball valves (8) is connected, the second communication pipe (35) is provided with a second safety valve (36), located at the liquid check valve (29) and the fifth pneumatic high pressure ball valve A section of the water supply pipe (25) between (30) is connected to the first gas supply pipe (9) through a third communication pipe (37), and is located between the flow meter (33) and the gas-driven liquid back pressure valve (34). A section of the water supply pipe (25) is connected to the drainage pool (24) through a fourth communication pipe (38), and the fourth communication pipe (38) is provided with a seventh pneumatic high-pressure ball valve (39); The detection unit includes a first pressure transmitter (40), a second pressure transmitter (41), a third pressure transmitter (42), a fourth pressure transmitter (43), and a fifth pressure transmitter (44), sixth pressure transmitter (45), seventh pressure transmitter (46), eighth pressure transmitter (47), liquid level transmitter (48) and temperature transmitter (49 ), the first pressure transmitter (40) is arranged on a section of the total gas supply pipe (2) between the first filter (3) and the manual ball valve (4), and the second pressure transmitter (41 ) is arranged on a section of the main gas supply pipe (2) between the gas drive gas pressure reducing valve (5) and the second filter (6), and the third pressure transmitter (42) is arranged on the first pneumatic high pressure ball valve On a section of the main gas supply pipe (2) between (7) and the second pneumatic high pressure ball valve (8), the fourth pressure transmitter (43) is arranged on the first safety valve (14) and the second electronic pressure regulator The fifth pressure transmitter (44) is arranged on the second gas supply pipe (10), and the sixth pressure transmitter ( 45) is arranged on a section of the third gas supply pipe (11) between the third constant pressure reducing valve (19) and the manual shut-off valve (20), and the seventh pressure transmitter (46) is arranged on the fifth On a section of water supply pipe (25) between the filter (32) and the flowmeter (33), the eighth pressure transmitter (47) is arranged on the seventh pressure transmitter (46) and the flowmeter (33) On a section of the water supply pipe (25) in between, the liquid level transmitter (48) is arranged on the water storage tank (23), and the temperature transmitter (49) is arranged on the third communication pipe (37). 2. according to a kind of liquid rocket engine throttle ring test bench system according to claim 1, it is characterized in that: also comprise control unit, described control unit comprises upper computer (50), industrial computer (51), industrial switch ( 52), a PLC controller (53) and a data acquisition card (54), the upper computer (50), the industrial computer (51), the PLC controller (53) and the data acquisition card (54) are all connected to the industrial switch (52) ) is connected, the PLC controller (53) is connected with the data acquisition card (54), the first pressure transmitter (40), the second pressure transmitter (41), the third pressure transmitter (42), fourth pressure transmitter (43), fifth pressure transmitter (44), sixth pressure transmitter (45), liquid level transmitter (48) and temperature transmitter (49) are connected with the input end of the PLC controller (53), and the seventh pressure transmitter (46), the eighth pressure transmitter (47) and the flowmeter (33) are all connected with the input of the data acquisition card (54) The first electronic pressure regulator (16) and the second electronic pressure regulator (17) are both connected to the output end of the PLC controller (53). 3. according to a kind of liquid rocket engine throttle ring test bench system according to claim 1, it is characterized in that: between the described seventh pressure transmitter (46) and the eighth pressure transmitter (47) for Place the throttle to be tested. 4. A liquid rocket engine throttle ring test-bed system according to claim 2, characterized in that: an OPC communication mode is adopted between the PLC controller (53) and the data acquisition card (54).

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