Safety interlocking device of still kettle door quick to open

A technology of safety interlock device and autoclave, which is applied in the direction of pressure vessels, fixed-capacity gas storage tanks, mechanical equipment, etc., can solve the problems of high maintenance cost, autoclave explosion, damage, etc., and achieve a high degree of automation and extended The effect of service life and stability guarantee

Active Publication Date: 2014-09-10

WUHAN BOILER PRESSURE VESSEL INSPECTION INST

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AI-Extracted Technical Summary

Problems solved by technology

From the 1990s to the present, autoclave explosion accidents have occurred almost every year, causing casualties

Through the investigation and analysis of many autoclave accidents, it is known that the common point of these accidents is that the kettle teeth slipped or were damaged, resulting in an explosion, and the lack of effective quick-opening interlock device or damage to the interlock device was the primary cause of the kettle tooth slipping

[0004] At present, there are many types of interlocking devices for quick-opening pressure vessels in China. Although some interlocking devices can meet the requ...

Abstract

The invention discloses a safety interlocking device of a still kettle door quick to open. The safety interlocking device is characterized in that the safety interlocking device comprises a mechanical locking mechanism and a self-locking mechanism; the mechanical locking mechanism comprises a support, a semi-circular plate, a handle, a transmission part and a limiting part, and the support is fixed onto a kettle body; the transmission part comprises a transmission shaft and a connecting rod, the transmission shaft is connected with the semi-circular plate, one end of the connecting rod is connected with the semi-circular plate in a hinged mode, and one end of the handle is connected with the semi-circular plate; the limiting part comprises a limiting bolt, a limiting groove and a shaft sleeve, the limiting bolt is connected with the other end of the connecting rod in a hinged mode, the shaft sleeve is arranged on the kettle body, the limiting groove is formed in a kettle ring of the still kettle, and the limiting bolt penetrates through the shaft sleeve to be connected with the limiting groove in a clamped mode after the semi-circular plate is rotated in place. The safety interlocking device of the still kettle door quick to open has the advantages of being safe, reliable, high in automation degree, low in manufacturing cost, firm, durable, simple to operate and convenient to repair.

Application Domain

Pressure vessels

Technology Topic

Self lockingEngineering +5

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Examples

Experimental program(1)

Example Embodiment

[0028] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0029] Such as Figure 1-4 As shown, an autoclave quick-opening safety interlock device includes a mechanical locking mechanism 101 and a self-locking mechanism 102. The mechanical locking mechanism includes: a support 1, a semicircular plate 2, a handle 3, a transmission component 4, Bit part 5,

[0030] The support 1 is a flat support with a column, which is fixed on the kettle body 6 in the horizontal direction;

[0031] The transmission component 4 includes: a transmission shaft 41 and a connecting rod 42, a sleeve 11 is provided outside the transmission shaft 41, and the sleeve 11 is fixedly connected to the support 1, and the transmission shaft 41 passes through the sleeve 11 at the back of the semi-circular plate 2 and the semi-circular plate 2 Fixed connection, the semicircular plate 2 rotates with the transmission shaft 41 as the rotation axis, one end of the connecting rod 42 is hinged with the semicircular plate 2, and the handle 3 is connected with the semicircular plate 2 at one end;

[0032] The limit component 5 includes: a limit pin 51, a limit slot 52 and a shaft sleeve 53, the bar-shaped limit pin 51 is hinged with the other end of the connecting rod 42, and the kettle body 6 is provided with a hollow cylindrical shaft with a horizontal axis. Sleeve 53, the autoclave ring 10 is provided with a horizontally elongated limit slot 52. After the semicircular plate 2 is rotated in place, the limit pin 51 horizontally passes through the sleeve 53 and enters the limit slot 52, and is locked with the limit slot 52 Bit connection.

[0033] The self-locking mechanism 102 includes a pin part 7 and a sensing part 8,

[0034] The bolt component 7 includes an electric bolt 71 and a bolt hole 72. The electric bolt 71 is fixed on the support 1, and the bolt hole 72 is opened behind the semicircular plate 2.

[0035] The sensing component 8 includes: a first proximity switch 81, a second proximity switch 83 and a positioning pin 82 installed on the back of the semicircular plate 2. The positioning pin 82 is in position with the first proximity switch 81 installed on the support when the semicircular plate 2 is rotated in place. Corresponding; when the electric plug 71 is ejected, the second proximity switch 82 corresponds to the position.

[0036] The exhaust component 9 includes an exhaust pipe 92 connected to the kettle body 6, one end of the exhaust pipe 92 is connected with an exhaust ball valve 91, and the transmission shaft 41 is connected with the valve stem of the exhaust ball valve 91.

[0037] The circuit system of the interlocking device includes: an electric valve 103, a programmable logic controller 104, and a pressure transmitter connected to the input terminal 104 of the programmable logic controller. The pressure transmitter is installed on the kettle body 6.

[0038] Turn the handle 3 to make the semicircular plate 2 rotate clockwise, and at the same time drive the connecting rod 42 to move closer to the kettle body 6. At this time, because the connecting rod 42 is hinged with the limit pin 51, the connecting rod 42 drives the limit pin 51 to pass through the sleeve 53 moves into the limiting slot 52, and when the semicircular plate 2 rotates in place, the limiting plug 51 is connected to the limiting slot 52 in a locked position. When the semicircular plate 2 rotates, the transmission shaft 41 rotates synchronously with it, and the transmission shaft 41 drives the valve stem of the exhaust ball valve 91 to close the exhaust ball valve 91. At this time, the positioning pin 82 on the back of the semicircular plate 2 corresponds to the position of the first proximity switch 81, the first proximity switch 81 feeds back a signal to the programmable logic controller 104, and the programmable logic controller 104 judges that the kettle door has been closed in place according to the signal. The electric valve 103 can be opened to instruct the intake steam to increase the pressure.

[0039] After the steam is input and boosted, the programmable logic controller 104 executes the electric bolt 71 out of the command according to the signal fed back by the pressure transmitter. At this time, the semicircular plate 2 has rotated in place, and the electric bolt 71 pops out into the bolt hole 72 behind the semicircular plate 2. Therefore, when there is pressure in the autoclave, the semicircular plate 1 cannot be rotated and the door of the autoclave cannot be opened. At this time, the second proximity switch 83 feeds back a signal to the programmable logic controller 104 to determine that the kettle door has been self-locked.

[0040] After the steaming is completed and the pressure is released, the programmable logic controller judges that the pressure is completely released according to the signal fed back by the pressure transmitter, and executes the electric latch 71 to receive the rebound command to withdraw from the 72 latch hole. At this time, the self-locking device opens. The semicircular plate 2 can rotate. Rotating the handle 3 makes the semicircular plate 2 rotate counterclockwise, and the connecting rod 42 drives the limit pin 51 to exit the limit slot 52 from the sleeve 53 until the semicircular plate 2 rotates to the initial position. When the semicircular plate 2 rotates, the transmission shaft 41 rotates synchronously with it, and the transmission shaft 41 drives the valve stem of the exhaust ball valve 91 to open the exhaust ball valve 91, and observe whether there is residual steam discharged. If there is no residual steam discharged, turn the semicircular plate 2 counterclockwise to open the kettle door. If there is still residual gas, check the pressure gauge and pressure sensor data to find out whether the pressure in the kettle is completely released before opening the kettle door.

[0041] The above are only specific implementations of the present invention. It should be pointed out that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention shall be covered by the protection scope of the present invention. within.

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Safety interlocking device of still kettle door quick to open

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

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Description & Claims & Application Information

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