How to make a blowout prevention device if there is a large amount of water when drilling?

Coal mines are an important energy source in China, and the personal safety of underground workers and mine safety must be ensured during coal mining. Gas and dust is the main disaster of coal mine safety production, in order to effectively prevent and control gas and dust disasters, China has implemented the policy of "first pumping and then mining", before coal mining, all should pre-pump the gas in the coal seam before mining, and the pre-pumping coal seam gas needs to construct a large number of boreholes, but in the construction drilling process, there are the following potential safety hazards: one is that the gas pressure in the borehole is large and easy to produce a large power phenomenon, which often leads to a large amount of coal and gas ejected from the borehole in the construction, It often causes the gas concentration of the roadway to exceed the limit within a certain range on the downwind side of the drilling roadway construction site; Second, a large amount of pulverized coal, water and gas are easy to be sprayed on the drilling rig operator during the spray hole, which is easy to affect personal safety; Third, the coal seam drilling construction and coal construction mostly use compressed air slag discharge, which will produce a large amount of dust at this time, threatening the health of the operator.

The existing drilling blowout prevention and dust removal device has played a certain role in the blowout hole and dust removal of drilling, but due to a variety of reasons, the following problems still exist: first, the sealing between the drill pipe and the wall of the drilling hole is not tight, and there are still more gas and dust overflow; Second, the sealing between the drill pipe and the back end of the orifice is not tight, and there is more gas and dust overflow.

Technical Implementation Elements:

Aiming at the deficiencies in the prior art, the utility model provides a drilling blowout prevention and dust removal device to solve the problem that the rear end of the drill pipe and the orifice device is not tightly sealed.

Before you call, ask where the water pipe is going; You can try to hit the plastic bottle with a small drill bit first, and it is really not possible to put it on the front drill bit to prevent the water from coming out and drenching on the bodyor on the machine.

It's easy to solve, just wear a full set of raincoats and a water mask.

It is recommended to go to the ** Internet to find the rhinestone waterproof cover, it should be possible.

What to do if the car glass water freezes in winter?

1. Drive the car to a garage with a relatively warm indoor temperature, park it for about half a day, and the glass water will automatically melt, and after melting, it will all be sprayed out and sprayed clean, and replaced with anti-freeze glass water.

2. Buy a bottle of antifreeze and de-icing glass water to add to the car, of course, this should choose a better weather, such as a period of time when the sun is more abundant at noon, and wait for a period of time to melt the frozen glass water.

3. Choose good weather, go out and drive for a while, let the heat of the car's engine melt the frozen glass water, and wait until the glass water can be sprayed out, spray it all out, and replace it with antifreeze glass water.

It can be thawed by starting the car by raising the temperature of the water tank.

Specific steps: 1. First of all, start the car, and start the car to increase the temperature of the water in the water tank.

2. Wait for the engine water temperature to rise, and the temperature of the engine compartment will rise.

3. Then turn on the warm air function and blow the front windshield to speed up the heating.

4. When the temperature of the water tank and the temperature of the front of the vehicle come up, the glass water will melt at an accelerated rate, but this is more time-consuming, laborious and fuel-intensive.

If the packaging is very rough and the production date is ambiguous, it is likely to be inferior glass water, which is not only not clean, but also easy to freeze. 2. Understand the freezing point of glass water: in winter, antifreeze glass cleaning liquid should be used, which can ensure that when the outside temperature is lower than minus 18 degrees, it will still not freeze and damage the car facilities, and there is a special effect antifreeze type, which can generally ensure that it is still not frozen at minus 40 degrees, suitable for use in the northernmost cold areas of our country, and the appropriate glass water should be selected according to the ambient temperature of the area.

In cold areas, add antifreeze along with glass water.

Chinese experts and engineers have developed new ways to protect aircraft from threats, using sheepdog drones to drive birds out of their paths. It is also the first of its kind in China, and the effect of repelling birds is relatively obvious, and it has been welcomed by many airports internationally.

1. Methods to prevent bird strikes based on the aircraft itself:

Aircraft manufacturing needs to go through strict bird strike testing: for example, the aircraft must consider the effective prevention of bird strike in the early stage of design: the nose, engine, windshield and so on must go through special anti-bird strike experiments in the development stage - in this regard, the Federal Aviation FAA has already begun to comprehensively and systematically carry out the research on the dynamic response analysis method of the aircraft, and formed a method to combine the dynamic response analysis of the bird strike and the bird strike test to carry out the anti-bird strike design of the aircraft.

2. Based on the birds themselves, understand their living habits and biological bird repellent.

Biological bird repellent method is currently very recognized in the world, which is a relatively advanced comprehensive measure, which can neither harm birds nor damage the environment.

For aircraft, there is currently no way to effectively prevent birds from hitting aircraft. The main measures to repel birds are the use of horns, ultrasonic waves and even guns to drive birds away from the airport, and even the calls of some natural enemies of birds will be released to keep these birds away from the airport. After takeoff, the plane generally flies at an altitude of several hundred meters, which is far beyond the limit of the bird's flight altitude, so there is no need to worry about hitting the bird.

But fighter jets are different, in order to avoid radar, they often choose low-altitude or even ultra-low-altitude penetration, and bird collisions can only be avoided as much as possible! Aircraft hitting birds is a problem in the world and poses a great threat to both civil and military aircraft. Although the speed of the bird is slow and small, the speed of the aircraft is too fast, resulting in the relative speed of the two, and the impact force after the collision is also very large, if it hits the weak link of the aircraft, it is likely to damage the body, and the serious will threaten the safety of the aircraft.

There are also small birds that may be sucked into the engine intake, loaded on the engine at high speed, directly damaged or even caused by **, etc., this impact caused the plane to be destroyed and the accident is greater! Every year, the bird hits the plane will happen, in most cases, the bird hits a relatively strong place and does not cause much damage, or even no damage, only leaves a little blood on the plane, and every year there are often several more serious bird collision serious accidents, according to statistics, the flight accident caused by the bird accounts for 20% 30% of the accident, and most of the bird collision occurs in take-off and landing, and there is when flying at low altitude or ultra-low altitude. After being hit by a bird, the pilot will evaluate the damage of the aircraft, especially after inhaling the engine, he will conduct a comprehensive and detailed inspection to determine whether the work can be continued, and if an abnormality is found, he will generally choose the nearest airport for landing or even forced landing!

As for the anti-collision measures of the aircraft, there is no very good way at present, and can only take passive bird repellent, for fighters, when performing low-altitude or even ultra-low-altitude training, try to avoid training in water networks and swampy areas; For training such as frequent canyon flights, the troops will carry out bird repellent in the canyon area in advance. Generally speaking, the maximum probability of the plane hitting the bird is about 10 kilometers around the airport, which is not decided by the pilot, so the airport ground bird driving has become a very important work, and the methods are all strange, there are patrol cars to put all kinds of strange sounds, gongs and drums, and even the birds' natural enemies; There are also shotguns, gas cannons, firecracker shells, etc., as well as tying up and smashing people, etc.!

In order to prevent the aircraft from being hit by birds, the solution commonly used at present is to repel birds, which are commonly used air cannons, recording bird repellents, wind-driven bird repellents, bionic model aircraft and so on. Although bird repellent has greatly reduced the occurrence of bird strike accidents, it still cannot fundamentally solve the problem, and the aircraft itself must be designed to resist bird strikes. One is to cope with the tremendous impact of a bird strike by increasing the strength of the aircraft's materials.

The other is to use energy-absorbing materials to absorb the impact force generated by the impact of the bird to ensure that the aircraft structure is not damaged.

Active bird strike control is mainly to drive birds out of the airport airspace, and the main ways to drive them away are intimidation, destruction of habitat environment and habitat relocation.

Intimidation and repelling birds, the more popular methods include gas cannons, terrifying eyes, recording to repel birds, hunting, and raising birds of prey. The gas cannon is a gas-fueled ** device, and the gas cannon is set off regularly to make a loud noise to drive away birds, but long-term use of the gas cannon will make the birds tolerate its sound. Terror-eyed balloons are balloons with giant eye patterns that scare away birds, but they can also have tolerance problems with long-term use.

Recording bird repellent is the recording of the song of birds of prey or the terrible cries of birds when they are abused, but this bird repellent method is limited by geography, and the recording of local birds must be used to have a better repellent effect. Hunting is the simplest and most effective way to repel birds, but this method has been opposed for ecological reasons. Raising birds of prey is a way to control birds by birds, artificially domesticating and raising a certain number of birds of prey at the airport, and releasing them regularly to drive away wild birds.

Destroying habitats is another way to avoid bird strikes. Proper disposal of household waste generated by the airport and nearby communities, selection of grass species and tree species that are not preferred by local birds for airport greening, timely treatment of airport lawns so that birds cannot hide, cleaning up wetlands and woods near airports and other suitable environments for birds, and using chemicals that are disgusting to birds but have no impact on the environment will cause birds to abandon the airport as a habitat. Habitat migration is a relatively difficult approach.

In Shanghai, the establishment of the Jiuduansha Wetland Reserve has successfully attracted birds that originally inhabited the vicinity of Pudong International Airport, reducing the incidence of bird strikes at the airport.

There is currently no effective way to prevent birds from hitting aircraft. At present, the main measures are for airports to use horns, ultrasonic waves and even guns around the runway to repel birds to prevent aircraft from hitting birds during take-off and landing. In addition, birds have a limited flight altitude, and the aircraft has far exceeded the limit altitude that birds can fly when they climb to normal flight altitudes, so there is no need to worry about hitting birds.

1. Because the red ink is very viscous, sometimes it will not be able to be cleaned cleanly, so you need to use the correct method to test the machine more times, enter the control panel of the computer, and then click the printer.

2. Right-click the printer device that needs to be inspected and repaired, and select Printer Preferences.

5. Then make sure that the printer is connected for operation and maintenance, and click the start button.

The main reasons why you can't print red (or some kind of base color) are:

1. The red nozzle is blocked;

2. The contacts in the cartridge holder (red) are contaminated and need to be cleaned with alcohol;

3. The printer motherboard is faulty.

It is recommended to check the nozzle of the printer, and clean the nozzle if there is any lack of color or broken wire. If the nozzle check shows normal, it is recommended to replace the ** paper test.

Hello, I'm glad to answer for you, please later, I'm working hard to sort out the answer for you, and I'll reply to you within 5 minutes.

1. Caused by the exhaustion of ink cartridges. However, most of the reasons are caused by clogged sprinklers.

2. Slight blockage can be basically solved by cleaning it with the printer's own nozzle. In the case of severe blockage, the HP type can replace the ink cartridge, while the EP type can only try to dredge the print printhead.

3. The reason for printing color bias is due to the lack of a certain color in the printer, or several colors, and the angle of the print head is not calibrated, which will also cause local color cast. Such failures can also be caused by unqualified paper and ink cartridges.

Second, the treatment method:

1. The original picture on the new monitor, so that the printer can print the desired color of the graph.

2. There is no counting chip on the ink cartridge of this model printer, take out the ink cartridge and then load it during use, the printer will default to install a new ink cartridge, and the ink capacity can not be measured correctly.

Question: I want to make an impression of the red color above.

I want to make an impression of the red like the one above.

If the ink is printed out of a lack of a color, it may be that the red ink in the cartridge is gone, in this case, the cartridge is filled and then the printer can be refilled, and there is a situation that the printer's nozzle is blocked with ink slag, and it can be cleaned, if it is not good, it will be good to clean it once.

Take out the sprinkler and soak it in warm boiled water, taking care not to get water on the board. If it gets wet, be sure to wipe it clean before putting it back on. Try washing it twice after putting it back on.

If that doesn't work, take a syringe and put it on a leather sieve and blow a few times on the red thing on the top of the nozzle that looks like a small circle in contact with the cartridge. Take a paper towel and dip it under the nozzle to see if there is red ink. It would be nice if there were.

If not, you can take it to a professional place to repair the printer, and it will generally only cost about 30 yuan. If you don't want to go, you can also call the door-to-door repair of the printer for only 50 yuan.

Upstairs is right, but there is also a possibility that there is ink in the ink, and the head is not blocked, but the head is broken. How can this be judged? Method:

Use a piece of tablepaper, fold a few layers, press directly to the print head, see if there is red ink, if there is ink out, then your print head has to be replaced. If there is no red out, it is a headhead plug or no ink. The only way to do this is to clean it.