CN212899955U - Safe discharge device capable of early warning for long-tube trailer - Google Patents
Safe discharge device capable of early warning for long-tube trailer Download PDFInfo
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- CN212899955U CN212899955U CN202021280747.4U CN202021280747U CN212899955U CN 212899955 U CN212899955 U CN 212899955U CN 202021280747 U CN202021280747 U CN 202021280747U CN 212899955 U CN212899955 U CN 212899955U
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Abstract
The utility model belongs to the technical field of high-pressure permanent gas long-tube trailer conflagration early warning control and explosion-proof safety, concretely relates to but safe discharge device is used to long-tube trailer of early warning. The device structure is as follows: the safety release device is provided with a connection temperature sensor, the temperature sensor is connected with a wireless temperature transmitter, the wireless temperature transmitter is connected with a signal receiving alarm through signals, and the signal receiving alarm is arranged in a trailer head cab and a gas station remote operation room and is used for receiving signals transmitted by the wireless temperature transmitter; the safety relief device comprises a clamp holder, the clamp holder is in sealing connection with the cock through threads, and the backing ring, the rupture disk and the shear ring are fixed between the cock and the clamp holder; the lantern ring is connected to the middle part outside the cock, holes are formed in the same position on one side of the lantern ring and one side of the cock, the fusible alloy block is arranged in the cock, and the contact of the temperature sensor is connected with the lantern ring through threads. The utility model discloses carry out real-time supervision and early warning to safety device, can effectively improve the safety control to high-pressure long-tube trailer.
Description
Technical Field
The utility model belongs to the technical field of high-pressure permanent gas long-tube trailer conflagration early warning control and explosion-proof safety, concretely relates to but safe discharge device is used to long-tube trailer of early warning.
Background
The long-tube trailer is an important variety of movable pressure containers, is a transportation device formed by fixing a plurality of large-volume gas cylinders (also called long tubes) with the volume of more than 1000L with a running gear through a frame, and is mainly used for transporting permanent gases with higher pressure, such as natural gas, hydrogen, helium and the like. During the processes of filling, transportation, use and the like, accidents such as fire and the like occur, the pressure in the cylinder rises, and the gas cylinder explodes under overpressure. Therefore, according to the relevant requirements of the 'movable pressure container safety technology supervision regulations' and 'gas cylinder safety technology supervision regulations' in China, each gas cylinder on the long tube trailer is provided with a safety relief device independently, and the safety relief device has the functions that when the long tube trailer is in a high-temperature environment under the fire working condition, the gas pressure in the gas cylinder rises along with the temperature, when the pressure threshold value or the temperature threshold value is exceeded, the relief device does not have a warning to automatically open, high-pressure gas is discharged through the safety relief device, and the long tube trailer body is protected from explosion.
The fire accidents of the long tube trailer can be classified into two types of accidents, namely, the road tire fire in the transportation process and the fire in the gas station according to the occurrence places, and the two types of accidents are mainly local fires. For local fire accidents, it is difficult for field personnel to observe fire information and make an emergency response strategy at the moment of the incident.
The safety pressure relief device for long-pipe trailers mainly comprises a single rupture disk structure and a rupture disk-fusible plug combined structure, wherein the response mechanism of the single rupture disk structure is sensitive to pressure change, and pressure relief is started immediately when the pressure change exceeds a set threshold.
Although the design of the rupture disk-fusible plug combined structure effectively avoids the malfunction phenomenon of the rupture disk caused by complex working conditions and improves the reliability of the safety relief device in normal use, the following potential safety hazards still exist: firstly, the action mechanism of the rupture disk-fusible alloy plug safety relief device is that the relief device is automatically opened without any sign when the relief condition is reached, the device has no early warning function, the fire-initiating part is positioned at the rear end of a trailer tube bundle and is far away from a trailer cab and a monitoring room operated in an air charging and discharging field, and a person in a fire disaster cannot master the heating condition of the relief device and judge which relief device of an air bottle is released in the first time, so that the escape time is reduced, and the device is not beneficial to fire rescue; secondly, as the fusible alloy block is built in the combined-structure discharge device, the change process of the heated temperature rise is invisible, the time when the discharge device is started cannot be judged when the discharge device is on fire, and the prediction cannot be carried out through the temperature change; thirdly, although an external fire forms a high-temperature environment, the discharge device is generally protected by the shell of the operation cabin, so that although the fusible alloy block is heated to a certain degree, the fusible alloy block is difficult to reach a melting state, the action response of the discharge device is still delayed, and the time of exposing the gas cylinder to the high-temperature environment of the fire and the risk of explosion of the gas cylinder are increased; fourthly, under operating condition, the inflation intensification process and the pressure release cooling process that there is the reversal in long-tube trailer when pressurization and pressure release, owing to lack the temperature monitoring to safe discharge device, can't fill the discharge rate through remote control and reduce the temperature load that causes the reversal to safe discharge device to and avoid the pressure release speed to cause the stifled damage of ice to safe discharge device at the excessive speed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the existing problems in the prior safety relief device, the utility model provides a but safe relief device for long-tube trailer of early warning, the device basic structure form is the rupture disk-fusible plug series combination relief device of taking the temperature monitoring early warning.
The utility model adopts the technical scheme as follows:
the safety relief device for the long-tube trailer capable of early warning comprises a safety relief device, a temperature sensor, a wireless temperature transmitter and a signal receiving alarm; the safety relief device is arranged on the gas cylinder, a temperature sensor is connected on the safety relief device, the temperature sensor is connected with a wireless temperature transmitter through a lead, the wireless temperature transmitter receives signals transmitted by a contact of the temperature sensor in real time, the wireless temperature transmitter is connected with a signal receiving alarm through a signal, the signal receiving alarm is arranged in a trailer head cab and a gas station remote operation room and is used for receiving temperature signals transmitted by the wireless temperature transmitter, displaying temperature information in real time and setting a threshold value, and the alarm gives an alarm through sound and light when the threshold value is exceeded;
the safety relief device comprises a clamp holder, the clamp holder is in sealing connection with the cock through threads, and the backing ring, the rupture disk and the shear ring are fixed between the cock and the clamp holder; the lantern ring is connected to the middle part outside the cock through threads, the lantern ring is of an internal straight thread external hexagonal structure and is in threaded connection with the cock, holes are formed in the same position on one sides of the lantern ring and the cock, a fusible alloy block is arranged in the cock, a contact of the temperature sensor is connected with the lantern ring through threads, and a contact at the front end of the temperature sensor is inserted into the fusible alloy after being heated to 200-300 ℃.
As an improvement, the upper end of the cock is connected with a protective cover through threads.
As an improvement, the wireless temperature transmitter comprises a built-in temperature data acquisition and conversion module, a signal amplification module and a wireless signal transmission module.
As an improvement, the signal receiving alarm is internally provided with a signal receiver, a digital display screen, a threshold setting module (please confirm) and an external audible and visual alarm.
The method for utilizing the safety relief device for the long-tube trailer capable of early warning comprises the following steps:
(1) before the work begins, a button on a signal receiving alarm is pressed to set a temperature alarm threshold value;
(2) when the long tube trailer works normally, the temperature of gas filled in the long tube trailer and the ambient temperature are lower than the alarm temperature, the alarm is in an un-triggered state, and a driver of the long tube trailer and other related field operators can operate normally;
(3) when a fire hazard condition occurs, the signal receiving alarm displays the temperature change value of each safety relief device in real time, when the ambient temperature of a certain relief device is higher than a set temperature alarm value, an alarm is triggered, the audible and visual alarm flashes to alarm, and a driver and field operators are reminded to pay attention to safety and take relevant first-aid measures at the first time.
(4) When the fire scene lasts for a period of time, the temperature exceeds the action temperature of the fusible alloy block, the fusible alloy block melts, meanwhile, the gas pressure in the cylinder rises, when the pressure rises to the action pressure of the rupture disk, the rupture disk and the gas in the gas cylinder of the long-tube trailer are safely released from the release channel, and the gas cylinder body does not explode.
The utility model discloses the principle does: when the bleeder mechanism body is in high temperature environment, temperature sensor contact temperature signal transmits for wireless temperature transmitter, and outwards launch wireless signal, after wireless signal is accepted by the signal reception alarm of arranging in driver's cabin or control chamber, judge through the signal reception alarm and exceed the threshold value, the safe bleeder mechanism position that the display screen shows the warning, audible-visual annunciator is sent out to the alarm, remind user's safe bleeder mechanism conflagration operating mode to appear possibly, on-the-spot personnel can report to the police at first time or selection, effective measures such as putting out a fire or fleeing, reduce the accident loss as far as possible.
Compared with the prior art, the utility model discloses profitable technological effect:
1. when a local fire of the long pipe trailer far away from the cab occurs, personnel can master the heating condition of the discharge device and judge which gas cylinder discharge device has the problem of discharge at the first time, thereby realizing the early warning of the heating condition of the fusible alloy block of the safety discharge device, improving the reaction of field personnel and being beneficial to the rescue of fire accidents;
2. for the built-in fusible alloy block, the action condition of the discharge device is intuitively predicted by monitoring the heating and temperature-rising change process in real time, and secondary fire caused by dischargeable is indirectly predicted;
3. under the working condition of use, the temperature information of the safety relief device is monitored in real time, so that the alternating temperature load on the safety relief device is reduced by means of remotely controlling the charging and discharging speed and the like, and the ice blockage damage to the safety relief device caused by the overhigh pressure discharging speed is avoided;
4. adopt remote early warning monitoring technology to carry out real-time supervision and early warning to safety device, can effectively improve the safety control to high-pressure long-tube trailer.
Drawings
FIG. 1 is a schematic structural view of a middle safety relief device of the present invention;
fig. 2 is a schematic structural diagram of the present invention;
fig. 3 is a schematic diagram of the present invention.
In the figure: 1-a gripper; 2-a backing ring; 3-rupture disk; 4-a shear ring; 5-a cock; 6-a collar; 7-a protective cover; 8-fusible alloy blocks; 9-waterproof sheet; 10-temperature sensor contacts; 11-a wireless temperature transmitter; 12-signal reception alarm.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings:
the utility model provides a but safe bleeder mechanism for long-tube trailer of early warning, includes safe bleeder mechanism, temperature sensor, wireless temperature transmitter 11 and signal reception alarm 12. As shown in fig. 2 and 3, a connection temperature sensor is arranged on the safety relief device, the temperature sensor is connected with a wireless temperature transmitter 11 through a wire, the wireless temperature transmitter 11 receives signals transmitted by a temperature sensor contact 10 in real time, the wireless temperature transmitter 11 is connected with a signal receiving alarm 12 through a signal, the signal receiving alarm 12 is arranged in a trailer head cab and a gas station remote operation room and is used for receiving temperature signals transmitted by the wireless temperature transmitter 11, displaying temperature information in real time and setting a threshold value, and when the threshold value is exceeded, the alarm gives an alarm through sound and light.
As shown in figure 1, the safety relief device comprises a clamp 1, the clamp 1 is connected with a cock 5 in a threaded sealing mode, and a backing ring 2, a rupture disk 3 and a shearing ring are fixed between the cock 5 and the clamp 1. The lantern ring 6 is connected to the middle part outside the cock 5 through threads, the lantern ring 6 is of an internal straight thread external hexagonal structure and is in threaded connection with the cock 5, holes are formed in the same position on one sides of the lantern ring 6 and the cock 5, the fusible alloy block 8 is arranged in the cock 5, the temperature sensor contact 10 is connected with the lantern ring 6 through threads, and the contact at the front end of the temperature sensor contact is inserted into the fusible alloy block 8 after being heated to 200-300 ℃. The upper end of the cock 5 is connected with a protective cover 7 through screw threads. A waterproof sheet 9 is arranged between the top end of the cock 5 and the protective cover 7.
The components shown in fig. 2 include a safety relief device, a wireless temperature transmitter 11 and a signal receiving alarm 12, wherein the wireless temperature transmitter 11 includes a built-in temperature data acquisition and conversion module, a signal amplification module and a wireless signal transmitting module. The wireless temperature transmitter 11 may be a model WXCW-1 product manufactured by Tevolley technologies, Inc. of Beijing.
The signal receiving alarm 12 is respectively arranged in a cab and a control room of a pressurization and pressure relief station of the long-tube trailer, and the signal receiving alarm 12 is internally provided with a signal receiver, a digital display screen, an alarm temperature threshold setting button and an external audible and visual alarm. The signal receiving alarm 12 may be a model BJ-1 product manufactured by Tehangli technologies, Inc. in Beijing. Signal receiver can receive and show all installations on the long-tube trailer the utility model discloses the temperature signal of device realizes the real time monitoring to unusual temperature signal. An alarm threshold value (recommended to be not lower than 90 ℃) is set, an external audible and visual alarm is used for alarming a high-temperature signal, and once a fire overtemperature signal occurs, field personnel can be reminded to check at the first time.
A method for a safety relief device for a long-tube trailer capable of early warning comprises the following steps:
(1) before the work begins, a button on the signal receiving alarm 12 is pressed to set a temperature alarm threshold value;
(2) when the long tube trailer works normally, the temperature of gas filled in the long tube trailer and the ambient temperature are lower than the alarm temperature, the alarm is in an un-triggered state, and a driver of the long tube trailer and other related field operators can operate normally;
(3) when a fire condition occurs, the signal receiving alarm 12 displays the temperature change value of each safety relief device in real time, when the ambient temperature of a certain relief device is higher than a set temperature alarm value, an alarm is triggered, the audible and visual alarm flickers to give an alarm, and a driver and field operators are reminded to pay attention to safety and take relevant first-aid measures at the first time.
(4) After the fire scene lasts for a period of time, the temperature exceeds the action temperature of the fusible alloy block, the fusible alloy block 8 melts, meanwhile, the gas pressure in the cylinder rises, when the pressure rises to the action pressure of the rupture disk 3, the rupture disk 3 ruptures, the gas in the gas cylinder of the long-tube trailer is safely discharged from the discharge channel, and the gas cylinder body does not explode.
Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.
Claims (5)
1. A safe discharge device for a long-tube trailer capable of early warning is characterized by comprising a safe discharge device, a temperature sensor, a wireless temperature transmitter and a signal receiving alarm; the safety release device is provided with a connecting temperature sensor, the temperature sensor is connected with a wireless temperature transmitter through a lead, the wireless temperature transmitter receives signals transmitted by a contact of the temperature sensor in real time, the wireless temperature transmitter is connected with a signal receiving alarm through signals, the signal receiving alarm is arranged in a cab of the head of the trailer and a remote operation room of the gas station and is used for receiving temperature signals transmitted by the wireless temperature transmitter, displaying temperature information in real time and setting a threshold value, and when the threshold value is exceeded, the alarm gives an alarm through sound and light;
the safety relief device comprises a clamp holder, the clamp holder is in sealing connection with the cock through threads, and the backing ring, the rupture disk and the shear ring are fixed between the cock and the clamp holder; the lantern ring is connected to the middle of the outside of the cock through threads, holes are formed in the same position on one side of the lantern ring and one side of the cock, a fusible alloy block is arranged in the cock, the contact of the temperature sensor is connected with the lantern ring through threads, and the contact at the front end of the temperature sensor is inserted into the fusible alloy block after being heated.
2. The pre-warning safety relief device for tube trailers of claim 1, wherein the upper end of the cock is threadedly connected with a protective cap.
3. The pre-warning safety relief device for tube trailers as claimed in claim 2, wherein a waterproof sheet is provided between the top end of said cock and said protective cover.
4. The safety release device for the long tube trailer capable of early warning as claimed in claim 1, wherein the wireless temperature transmitter comprises a built-in temperature data acquisition and conversion module, a signal amplification module and a wireless signal transmission module.
5. The safety release device for the long-tube trailer capable of giving an early warning according to claim 1, wherein the signal receiving alarm is internally provided with a signal receiver, an external digital display screen, an alarm temperature threshold setting button and an external audible and visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021280747.4U CN212899955U (en) | 2020-07-02 | 2020-07-02 | Safe discharge device capable of early warning for long-tube trailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021280747.4U CN212899955U (en) | 2020-07-02 | 2020-07-02 | Safe discharge device capable of early warning for long-tube trailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212899955U true CN212899955U (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021280747.4U Active CN212899955U (en) | 2020-07-02 | 2020-07-02 | Safe discharge device capable of early warning for long-tube trailer |
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| Country | Link |
|---|---|
| CN (1) | CN212899955U (en) |
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2020
- 2020-07-02 CN CN202021280747.4U patent/CN212899955U/en active Active
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