A position control and mobile sealing device based on water mist particle size test in a channel

Abstract

A position control and mobile sealing device based on water mist particle size testing in a channel comprises a channel, a hydraulic drive device, a bracket, a sealing plate and a laser particle size tester; strip holes are symmetrically arranged on the side walls on both sides of the channel; the hydraulic drive device and the bracket are both arranged above the channel, the hydraulic drive device pushes the bracket to move up and down, the upper ends of the two sealing plates are respectively fixedly connected to the two ends of the bracket, the two sealing plates are slidably connected to the two sides of the channel, the transmitting end and the receiving end of the laser particle size tester are respectively fixed on the two sealing plates, the transmitting end of the laser particle size tester passes through the strip holes on the side walls on both sides of the channel and is received by the receiving end, and the device can control the position of the laser particle size tester and seal the channel.

Description

Technical Field

[0001] The invention relates to a position control and mobile sealing device based on water mist particle size testing in a channel, and belongs to the field of full-section precise testing of water mist distribution. Background Art

[0002] The existing spray test devices used in research generally only use water mist particle size testing for fixed optical paths. The test cannot represent the distribution of water mist on the entire interface and has the following problems:

[0003] 1. Generally, in an open environment, the water mist distribution is tested by a particle size tester without considering the problem of pipe opening and sealing; 2. When testing in a closed environment, no accurate height moving bracket is set. The fixed particle size tester can only test the water mist distribution at a fixed height of a single optical path, which cannot reflect the distribution of the actual water mist of the entire cross section and can only represent the water mist situation at a fixed height; 3. It is difficult to achieve precise control of the test equipment, especially the height control and sealing control. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a position control and mobile sealing device based on water mist particle size testing in a channel, which can control the position of a laser particle size tester and seal the channel.

[0005] In order to achieve the above-mentioned purpose, the technical solution proposed in the present invention is: a position control and mobile sealing device based on water mist particle size testing in a channel, comprising a channel, a hydraulic drive device, a bracket, a sealing plate and a laser particle size tester; strip holes are symmetrically provided on the side walls on both sides of the channel; the hydraulic drive device and the bracket are both arranged above the channel, the hydraulic drive device pushes the bracket to move up and down, the upper ends of the two sealing plates are respectively fixedly connected to the two ends of the bracket, the two sealing plates are slidably connected on both sides of the channel, the transmitting end and the receiving end of the laser particle size tester are respectively fixed on the two sealing plates, and the transmitting end of the laser particle size tester passes through the strip holes on the side walls on both sides of the channel and is received by the receiving end.

[0006] A further design of the above technical solution is: the position control and movement sealing device also includes an air pressure tank, which is connected to the gap between the sealing plate and the channel side wall through an air inlet pipe, and gas is introduced into the gap.

[0007] The sealing plate is provided with an air inlet hole, and the air pressure tank is connected with the air inlet hole through an air inlet pipeline.

[0008] Slide grooves are arranged on both sides of the channel, and the sealing plates are slidably connected in the slide grooves.

[0009] The sealing plate is provided with a test hole, and the laser emitted by the transmitting end of the laser particle size tester enters the channel through the test hole and the strip hole on the side wall of the channel, and is received by the receiving end through the strip hole on the other side of the channel and the test hole of another sealing plate.

[0010] A guide column is fixed on the top of the channel, and the bracket is slidably connected to the guide column.

[0011] The guide column is provided with a guide groove, and the bracket is fixed with a guide block matched with the guide groove, and the guide block is slidably connected in the guide groove.

[0012] A spring is arranged at the bottom of the bracket, and two ends of the spring are respectively against the bottom of the bracket and the top of the channel.

[0013] The hydraulic drive device is a hydraulic cylinder, the fixed end of the hydraulic cylinder is fixed on the guide column, and the output end is fixed on the bracket.

[0014] The position control and movable sealing device further comprises a control device, which is respectively connected with the hydraulic drive device, the laser particle size tester and the air pressure tank.

[0015] The beneficial effects of the present invention are:

[0016] The device of the present invention can realize the height movement of the receiving end and the transmitting end of the laser particle size tester, and can ensure that they are centered at all times. At the same time, in order to prevent air or water mist from leaking from the opening of the receiving end or the transmitting end channel in the channel and affecting the water mist particle size test result, a sealing device that can move in the height direction simultaneously with the laser particle size tester is designed. This device plays a key role in accurately testing the distribution of water mist particle size at different heights of the entire cross section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0018] Figure 2 It is a right side view of the first embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0020] In the figure: 1-channel, 11-bar hole, 12-guide column, 13-slideway, 2-hydraulic cylinder, 3-bracket, 4-spring, 5-sealing plate, 6-laser particle size tester, 7-air pressure tank. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Embodiment 1

[0023] like Figure 1 and Figure 2 As shown, a position control and mobile sealing device based on water mist particle size testing in a channel in this embodiment includes a channel 1, a hydraulic cylinder 2, a bracket 3, a sealing plate 5 and a laser particle size tester 6.

[0024] The longitudinal section of the channel 1 is rectangular with a cross-sectional size of 600*600mm, and strip holes 11 are symmetrically arranged on the side walls of the channel 1; the hydraulic cylinder 2 and the bracket 3 are both arranged above the channel 1, and a spring 4 is arranged between the bracket 3 and the top of the channel 1, and the two ends of the spring 4 are respectively pressed against the bottom of the bracket 3 and the top of the channel 1, and the output shaft of the hydraulic cylinder 2 is fixedly connected to the bracket 3, and the hydraulic cylinder 2 pushes the bracket 3 to move up and down, and the upper ends of the two sealing plates 5 are respectively fixedly connected to the two ends of the bracket 3, and the two sealing plates are located on both sides of the channel 1 and slidably connected to both sides of the channel 1, and the sealing plates 5 completely cover the strip holes 11; the transmitting end and the receiving end of the laser particle size tester 6 are respectively fixed on the two sealing plates 5, and the sealing plates 5 are provided with test holes. The laser emitted by the transmitting end of the laser particle size tester 6 passes through the test hole and the strip hole 11 on the side wall of the channel 1 to enter the channel, and is received by the receiving end through the strip hole 11 on the other side of the channel and the test hole of the other sealing plate.

[0025] In this embodiment, the support 3 and the sealing plate 5 are pushed by the hydraulic cylinder 2 to slide up and down along the side wall of the channel 1, thereby driving the laser particle size tester 6 to move to different heights of the channel 1 to test the distribution of water mist at different heights. After the test, the hydraulic cylinder 2 is closed, and the support can return to its original position under the action of the spring 4. In this embodiment, the support 3 is controlled by the hydraulic cylinder 2, and the support 3 is fixedly connected with the transmitting end and the receiving end of the laser particle size tester 6. Therefore, the transmitting end and the receiving end of the laser particle size tester 6 move simultaneously with the support 3, which can ensure that the transmitting end and the receiving end of the laser particle size tester 6 are always aligned.

[0026] In this embodiment, the position control and mobile sealing device further includes an air pressure tank 7. The sealing plate 5 is provided with an air inlet hole. The air pressure tank 7 is connected to the air inlet hole through an air inlet pipe, and is used to pass gas into the gap between the sealing plate 5 and the side wall of the channel 1. By passing compressed air of a certain pressure into the space between the sealing plate and the wall of the channel, the gauge pressure is about 1-2 bar, so that the external air pressure of the channel 1 is greater than the internal air pressure, ensuring that the air or water mist inside the pipeline will not leak from the strip hole, and the amount of compressed air passed is small, which will not affect the flow field inside the channel 1.

[0027] Embodiment 2

[0028] like Figure 3As shown, the present embodiment is a position control and mobile sealing device based on the water mist particle size test in the channel, and its structure is basically the same as that of the first embodiment, except that in the present embodiment, slide grooves 13 are provided on both sides of the channel 1, and the sealing plate 5 is slidably connected in the slide grooves 13.

[0029] A guide column 12 is fixed on the top of the channel 1, and a guide groove is provided on the guide column 12. A guide block matching the guide groove is fixed on the bracket 3, and the guide block is slidably connected in the guide groove. The fixed end of the hydraulic cylinder 2 is fixed on the guide column 12, and the output end is fixed on the bracket 3.

[0030] In this embodiment, the position control and movable sealing device further comprises a control device, which is respectively connected to the hydraulic cylinder 2, the laser particle size tester 6 and the air pressure tank 7, and is used to control the above devices.

[0031] The control strategy of the device of this embodiment is as follows:

[0032] (1) Since the laser particle size analyzer 6 emits a beam cylinder with a diameter of 10 mm, the controller controls the hydraulic drive device to move the laser particle size analyzer to the following specific positions (0-10 mm, 10-20 mm, 20-30 mm, ..., until it moves to 590-600 mm), and completes the water mist distribution test for each specific position, so as to ensure that the entire cross-sectional height of 600 mm is fully covered;

[0033] (2) During the movement, the compressed gas in the air pressure tank 7 is not put into use, that is, the valve at the outlet of the air pressure tank 7 is controlled to be closed, so as to reduce the friction resistance during the movement;

[0034] (3) When moving to each specific position, taking 10-20 mm as an example, after the laser particle size tester 6 moves to this position, the outlet valve of the air pressure tank 7 is started to seal the strip hole of the channel 1, and the sealing gas can protect the transmitting end and the receiving end of the laser particle size tester 6 from being adhered by the flowing water mist in the pipeline during the test, thereby ensuring the normal operation of the laser testing device;

[0035] (4) After moving to each specific position and completing the sealing step (3), taking 10-20mm as an example, the controller starts the laser particle size analyzer, tests the water mist distribution of the 10-20mm optical path and saves the results. After obtaining the results, the controller controls the sealing gas device to close the air pressure tank outlet valve and stop sealing. Then, the controller controls the hydraulic cylinder to move the laser particle size analyzer to the 20-30mm position and continues steps (3)-(4) until the controller controls the hydraulic drive to move the laser particle size analyzer to the 590-600mm position, completing the last water mist distribution test of the optical path and the test work is completed.

[0036] The technical solutions of the present invention are not limited to the above-mentioned embodiments, and any technical solutions obtained by equivalent replacement methods fall within the scope of protection required by the present invention.

Claims

1. A position control and mobile sealing device based on water mist particle size testing in a channel, characterized in that: It includes a channel, a hydraulic drive device, a bracket, a sealing plate and a laser particle size tester; strip holes are symmetrically arranged on the side walls of both sides of the channel; the hydraulic drive device and the bracket are both arranged above the channel, the hydraulic drive device pushes the bracket to move up and down, the upper ends of the two sealing plates are respectively fixedly connected to the two ends of the bracket, the two sealing plates are slidably connected to the two sides of the channel, the transmitting end and the receiving end of the laser particle size tester are respectively fixed on the two sealing plates, the sealing plates are provided with test holes, the laser emitted by the transmitting end of the laser particle size tester passes through the test holes and the strip holes on the side walls of the channel into the channel, and passes through the other side of the channel The strip hole and the test hole of another sealing plate are received by the receiving end; the device also includes: an air pressure tank, which is connected to the gap between the sealing plate and the side wall of the channel through an air inlet pipe, and gas is introduced into the gap; the device also includes: a control device, which is respectively connected to the hydraulic drive device, the laser particle size tester and the air pressure tank, and is used to control the hydraulic drive device to move the laser particle size analyzer to a specific position to perform water mist particle size test in the channel, and control the air pressure tank outlet valve to close during the movement of the laser particle size analyzer, and start the air pressure tank outlet valve when the laser particle size analyzer moves to each specific position.

2. The position control and mobile sealing device based on the water mist particle size test in the channel according to claim 1, characterized in that: The sealing plate is provided with an air inlet hole, and the air pressure tank is connected with the air inlet hole through an air inlet pipeline.

3. The position control and mobile sealing device based on the water mist particle size test in the channel according to claim 1 is characterized in that: Slide grooves are arranged on both sides of the channel, and the sealing plates are slidably connected in the slide grooves.

4. The position control and mobile sealing device based on the water mist particle size test in the channel according to claim 1 is characterized in that: A guide column is fixed on the top of the channel, and the bracket is slidably connected to the guide column.

5. The position control and mobile sealing device based on the water mist particle size test in the channel according to claim 4, characterized in that: The guide column is provided with a guide groove, and the bracket is fixed with a guide block matched with the guide groove, and the guide block is slidably connected in the guide groove.

6. The position control and mobile sealing device based on the water mist particle size test in the channel according to claim 5, characterized in that: A spring is arranged at the bottom of the bracket, and two ends of the spring are respectively against the bottom of the bracket and the top of the channel.

7. The position control and mobile sealing device based on the water mist particle size test in the channel according to claim 6, characterized in that: The hydraulic drive device is a hydraulic cylinder, the fixed end of the hydraulic cylinder is fixed on the guide column, and the output end is fixed on the bracket.

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