JP4278395B2 - Closed airtightness measuring device and measuring method for elevator entrance / exit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a closed airtightness measuring apparatus and a measuring method for measuring airtightness when an elevator entrance / exit having a smoke shielding function is closed.
[0002]
[Prior art]
On the wall surface of the elevator hall, an elevator entrance / exit that leads to the elevator hoistway is formed. Generally, this entrance / exit has a gate-shaped three-sided frame, and a landing door for opening / closing the entrance / exit is provided on the back side of the three-sided frame, and the entrance / exit is normally closed by this landing door.
[0003]
The landing door is provided with a hanger roller at the top, and this hanger roller is slidably engaged with a hanger rail provided at the upper back of the three-sided frame, and the hanger roller rolls along the hanger rail so The doorway is opened and closed.
[0004]
At the bottom of the entrance / exit, a sill is provided almost flush with the floor of the hall, and the lower part of the landing door engages freely on this sill, and the landing door moves left and right along this sill. To do.
[0005]
A certain amount of clearance is provided between the landing door and the three-way frame or sill to allow the landing door to operate smoothly. For this reason, in the event of a fire, the entrance is closed by the landing door. Nonetheless, smoke and toxic gases from the fire enter the elevator hoistway through the gap between the landing door and the three-sided frame and sill, and the smoke and toxic gas enter the elevator doors on the other floors. There is a risk that it will flow out into the floor from the gap and diffuse, causing an unexpected danger to the residents of that floor.
[0006]
In view of this, it has been proposed to install a seal mechanism on the landing door, or to provide smoke prevention equipment that shuts off the entrance and exit with a shutter, a screen or the like in the event of a fire.
[0007]
As a sealing mechanism provided on the landing door, many structures have been proposed in which a sealing member made of an elastic material such as rubber is attached to the periphery of the door panel, and this sealing member is pressed to block smoke when the landing door is closed.
[0008]
Conventionally, in order to check the smoke shielding performance of such landing doors, before installing the landing doors in the building, the landing doors and their surrounding structures (three-sided frame, etc.) are placed in the test facility equipped with a chamber and a pressure device. And by applying a pressure difference between the inside and outside of the landing door by the pressure device, and measuring the flow rate of air leaking to the low pressure side of the door due to the pressure difference, the peripheral structure of the landing door Judgment is made on the airtightness of objects, that is, the smoke shielding performance. After confirming the smoke shielding performance, the landing doors and surrounding structures are carried into the building and actually installed in the building.
[0009]
In a landing door designed to obtain smoke shielding performance by a sealing mechanism, a sealing member such as rubber of the sealing mechanism may deteriorate due to long-term use or deteriorate over time, and airtightness may be reduced. In addition, since the landing door is of a sliding door type, the seal member is not only pressed on the upper and lower portions of the door, but may slide, and the airtightness may deteriorate due to wear caused by the sliding.
[0010]
Therefore, in order to maintain the predetermined smoke shielding performance for a long period of time, maintenance of the seal mechanism is necessary, and inspection is appropriately performed, and repair or replacement is necessary as necessary.
[0011]
However, the seal member of the landing door installed in the building is difficult to check because it is placed between the three-sided frame and the sill, and whether the necessary airtightness is maintained even if the seal member is visually inspected. It is difficult to confirm. For this reason, necessary repair or replacement may not be performed on the seal member, or unnecessary repair or replacement may be performed.
[0012]
In addition, even when the landing door is replaced with one having a smoke shielding function in a renewal construction or the like, it is difficult to directly check the smoke shielding performance after the construction.
[0013]
In addition, when smoke-proofing equipment such as shutters and screens is provided at the entrance / exit separately from the landing door, the smoke-proofing performance should be checked directly after the smoke-shielding equipment is installed in the building. Is difficult.
[0014]
The present invention has been made paying attention to such points, and the object of the present invention is to facilitate the smoke prevention performance of the landing door and the smoke prevention equipment after being installed in the building as appropriate in the hall of the building. It is an object of the present invention to provide a device and a method for measuring the airtightness of an elevator entrance / exit that can be confirmed.
[0015]
[Means for Solving the Problems]
A closed airtightness measuring apparatus according to the present invention includes a landing door that closes an elevator entrance, door covering means that closes a space in front of the landing door, and a space that is substantially sealed by the door covering means. A pressure difference generating means for pressurizing or depressurizing; a pressure measuring means for measuring the pressure in the substantially sealed space; and a flow rate of gas flowing between the substantially sealed space and the pressure difference generating means. Gas flow rate measuring means for measuring, The pressure difference generating means, the pressure measuring means, and the pressure flow measuring means are arranged in a landing hall in front of the landing door. It is characterized by that.
[0016]
When using this closed airtightness measuring device, the space in front of the landing door is almost sealed by the door covering means, and the space almost sealed by the door covering means is pressurized or depressurized by the pressure difference generating means. A difference is produced, and the flow rate of the gas flowing between the space and the pressure difference generating means under this state is measured by the gas flow rate measuring means.
[0017]
When the pressurized or reduced pressure in the space is stabilized at a substantially constant value, the flow rate of gas flowing between the space and the pressure difference generating means, and the flow rate of gas leaking from the periphery of the landing door, Since the gas flow rate between the space and the pressure difference generating means is measured by the gas flow measuring means, the amount of gas leakage around the landing door, that is, the smoke shielding performance is known. be able to.
[0018]
The closed airtightness measuring method of the present invention uses the closed airtightness measuring device, and when the atmospheric pressure in the substantially sealed space is stabilized at a substantially constant value during the operation of the atmospheric pressure difference generating means, The flow rate of the gas flowing between the substantially enclosed space and the pressure difference generating means is measured, and the closed airtightness of the elevator doorway by the landing door is measured based on the flow rate of the gas. .
[0019]
Further, the closed airtightness measuring method of the present invention uses both the closed airtightness measuring device, and a state in which a gap around the elevator landing door is sealed with a sealing means and a state in which the sealing means is removed. And the pressure difference generating means when the pressure in the substantially sealed space is stabilized at a substantially constant value during the operation of the pressure difference generating means, respectively. Measure the flow rate of gas flowing between the two, and measure the closed airtightness of the elevator doorway by the landing door based on the difference between the gas flow rate in one state and the gas flow rate in the other state It is characterized by doing.
[0020]
According to this closed airtightness measuring method, only the amount of air leakage at the peripheral portion of the landing door is detected based on the difference between the gas flow rate in the one state and the gas flow rate in the other state. Thus, the airtightness around the landing door can be measured more accurately.
[0021]
Furthermore, the closed airtightness measuring method of the present invention uses the closed airtightness measuring device, seals a gap in a partial section around the elevator landing door with a sealing means, and operates the pressure difference generating means during operation. When the atmospheric pressure in the substantially enclosed space is stabilized at a substantially constant value, the flow rate of the gas flowing between the substantially enclosed space and the pressure difference generating means is measured, and the flow rate of the gas is measured. Based on the above, the airtightness of the elevator doorway by the landing door is measured.
[0022]
According to this closed airtightness measuring method, it can be determined that gas leakage occurs in a section that is not sealed by the sealing means, and the airtightness in any part around the landing door based on the amount of air leakage. Therefore, it is possible to accurately determine the necessity for repair or replacement of the seal member in that portion, and it is possible to avoid waste such as unnecessary use of unnecessary repair or replacement.
[0023]
Further, the closed airtightness measuring device of the present invention includes a landing door that closes the elevator entrance and exit, and a smoke shield that closes the elevator entrance separately from the landing door so that the space on the front side of the landing door is substantially sealed. Means, a sealing means for sealing a gap around the elevator landing door, a pressure difference generating means for pressurizing or depressurizing the space substantially sealed by the smoke shielding means, and a space in the substantially sealed space Pressure measuring means for measuring the pressure, and gas flow measuring means for measuring the flow rate of the gas flowing between the substantially sealed space and the pressure difference generating means, The pressure difference generating means, the pressure measuring means, and the pressure flow measuring means are arranged in a landing hall in front of the landing door. It is characterized by that.
[0024]
When using this closed airtightness measuring device, the space in front of the landing door is almost sealed with smoke shielding means, and the space almost sealed with this smoke shielding means is pressurized or depressurized with the pressure difference generating means. A difference is produced, and the flow rate of the gas flowing between the space and the pressure difference generating means under this state is measured by the gas flow rate measuring means.
[0025]
When the pressurized or decompressed air pressure in the space is stabilized at a substantially constant value, the flow rate of gas flowing between the space and the pressure difference generating means, and the flow rate of gas leaking from the surroundings of the smoke shielding means Therefore, by measuring the flow rate of gas flowing between the space and the pressure difference generating means with the gas flow rate measuring means, the amount of gas leakage around the smoke shielding means, that is, the smoke shielding performance Can know.
[0026]
Furthermore, the closed airtightness measuring method of the present invention uses the closed airtightness measuring device, and when the atmospheric pressure in the substantially sealed space is stabilized at a substantially constant value during the operation of the atmospheric pressure difference generating means. Measuring the flow rate of the gas flowing between the substantially sealed space and the pressure difference generating means, and measuring the closed airtightness of the elevator entrance / exit by the smoke shielding means based on the flow rate of the gas. It is a feature.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows the appearance of an elevator entrance / exit as seen from an elevator hall. The elevator entrance / exit A has an opening 3 formed in a wall 2 of the hall 1, and an inner peripheral portion of the opening 3. It is comprised with the three-way frame 4 installed in.
[0028]
The three-sided frame 4 has a gate shape including a pair of standing frames 5 arranged on the left and right sides and a horizontal frame 6 installed between the upper ends of these standing frames 5. Landing doors 7a and 7b are provided.
[0029]
These landing doors 7a and 7b are suspended on the upper part of the back surface of the three-sided frame 4 via hanger rollers (not shown) and the lower part is on a sill 8 provided substantially flush with the floor surface of the landing hall 1. It moves to the left and right along the threshold 8.
[0030]
Sealing members (not shown) made of an elastic material such as rubber as a sealing mechanism constituting a sealing means are attached around the landing doors 7a and 7b, and the landing doors 7a and 7b and the three-way frame are attached by these sealing members. 4, the gap between the door contact portions where one landing door 7a and the other landing door 7b abut against each other and the gap between the landing doors 7a, 7b and the sill 8 are closed.
[0031]
An operation panel 10 having a destination floor registration button and the like is provided on the front surface of the wall body 2, and the space between the three-way frame 4 and the opening 3 is hermetically sealed with a sealing material (not shown).
[0032]
In order to confirm the smoke shielding performance at the elevator entrance / exit A, that is, the airtightness of the sealing mechanism of the landing doors 7a, 7b, as shown in FIG. A covering member 15 as covering means is attached. The covering member 15 has a sealing member (not shown) that is in close contact with the front surface of the wall body 2 at the periphery, and a masking tape 16 is attached to the periphery of the covering member 15 so that the space between the covering member 15 and the wall body 2 is reduced. And the gap between the covering member 15 and the floor surface of the hall 1 are sealed.
[0033]
Thus, by attaching the covering member 15 to the front surface of the wall body 2, a region surrounded by the entrance / exit A and the covering member 15 on the front side of the landing doors 7 a and 7 b becomes a substantially sealed space S. Yes.
[0034]
The hall 1 is provided with a blower 18 and a barometer 19. The blower 18 has a suction port 21 and a discharge port 22, and an air supply tube 23 is detachably attached to the discharge port 22.
[0035]
Piping connection parts 24 and 31 are provided in the covering member 15, and an end of the air supply tube 23 is detachably connected to the one pipe connection part 24, and the air supply tube 23 is connected by this connection. A regulator 25 and a flow meter 26 are provided in the middle of the air supply tube 23 in communication with the space S.
[0036]
A measurement tube 30 is led out from the barometer 19, and an end portion on the distal end side of the measurement tube 30 is detachably connected to the other pipe connection portion 31, and the measurement tube 30 is brought into the space S by this connection. Communicate.
[0037]
Further, a control device 35 is provided in the hall 1, and the blower 18, the barometer 19, and the flow meter 26 are connected to the control device 35 via cables 36, 37, and 38, respectively. The control device 35 includes an arithmetic processing device that performs predetermined arithmetic processing based on output signals from the barometer 19 and the flow meter 26, a control circuit that controls the start and stop of the blower 18, and the like.
[0038]
When measuring the closed airtightness of the entrance / exit A, first, the operation of the elevator is stopped or adjusted so that the elevator does not stop on the floor.
[0039]
Then, the barometer 19 is operated without operating the blower 18 to measure the atmospheric pressure in the hall 1, and the data is taken into the control device 35. Alternatively, the atmospheric pressure in the hall 1 is measured with the measurement tube 30 removed from the pipe connection portion 31, and the measured data is taken into the control device 35, and then the measurement tube 30 is connected to the pipe connection portion 31.
[0040]
Next, the blower 18 is operated, and air is sent into the space S between the landing doors 7 a and 7 b and the covering member 15 through the air supply tube 23 from the discharge port 22 of the blower 18. The pressure in the space S rises due to this air feed.
[0041]
The flow rate of the air sent into the space S is adjusted by the regulator 25 so that the inside of the space S becomes a predetermined pressure difference or more with respect to the atmospheric pressure of the landing hall 1. The flow rate of the air fed into the space S is measured by the flow meter 26 in terms of liters as a flow rate per minute converted from the air pressure and temperature to the flow rate of standard atmospheric pressure and standard air temperature, and is output to the control device 35. The
[0042]
Since the gap between the landing doors 7a, 7b and the three-way frame 4, the gap between the landing doors 7a, 7b, and the gap between the landing doors 7a, 7b and the sill 8 are blocked by the sealing member, The air pressure in the space S rises due to the air sent into the space S, and air leaks into the hoistway from the portion of the sealing member around the landing doors 7a and 7b as the air pressure further rises. .
[0043]
Here, when the air feed flow rate into the space S and the air leak flow rate from the space S to the hoistway are substantially balanced, the air pressure in the space S is stabilized at a substantially constant (predetermined) value. 25 is adjusted so that the atmospheric pressure in the space S is stabilized at a substantially constant (predetermined) value.
[0044]
When the atmospheric pressure in the space S is stabilized at a substantially constant value, the atmospheric pressure is detected by the barometer 19. Then, the flow rate of air flowing into the space S at this time is detected by the flow meter 26. The air feed flow rate at this time corresponds to the air leak flow rate from the space S to the hoistway. Therefore, by reading the air feed flow rate from the flow meter 26, the air leak flow rate, that is, the seal around the landing doors 7a and 7b. The level of hermeticity for the member can be determined.
[0045]
That is, when the value of the flow rate detected by the flow meter 26 is small, the level of air tightness by the seal member is high. Conversely, when the value of the flow rate detected by the flow meter 26 is large, the level of air tightness by the seal member is high. It will be low.
[0046]
The pressure difference generated between the space S and the hall 1 is about several tens of pascals, and the load per square meter on the covering member 15 is about several tens of N.
[0047]
As described above, in the hall 1, it is possible to easily and efficiently confirm the smoke shielding performance by the sealing members of the landing doors 7a and 7b. When the smoke shielding performance is reduced to a predetermined level or less, the seal member is repaired or replaced.
[0048]
The regulator 25 is adjusted to further change the pressure difference between the space S and the hall 1, and the landing doors 7a and 7b are sealed from the relationship between the pressure difference and the air flow rate into the space S. It is also possible to measure the tightness of the member.
[0049]
In the above embodiment, the space S is pressurized. However, the space S may be decompressed. In this case, the air supply tube 23 is connected to the suction port 21 of the blower 18, the air in the space S is sucked, and the pressure in the space S is made negative.
[0050]
Then, the flow rate of air sucked from the space S when the atmospheric pressure in the space S stabilizes to a substantially constant value is detected by the flow meter 26, and the flow rate of air leaking from the hoistway into the space S is determined based on the flow rate. It grasps | ascertains and measures the level of the airtightness with respect to the sealing member of the landing doors 7a and 7b.
[0051]
By the way, a masking tape (not shown) is provided around the landing doors 7a and 7b, that is, between the door rear portion e, the door stop portion c, the door upper portion t, and the door lower portion s shown in FIG. It is also possible to measure the amount of air leakage into the space S in this state in the same manner as described above.
[0052]
In this case, since the surrounding portions of the landing doors 7a and 7b are almost completely sealed, most of the air leakage from the space S is other than the surrounding portions of the landing doors 7a and 7b, that is, the surrounding portions of the covering member 15. This is what happens.
[0053]
Therefore, the amount of air leakage when the surrounding portions of the landing doors 7a and 7b are not covered with the masking tape and the amount of air leakage when the surrounding portions of the landing doors 7a and 7b are closed with the masking tape are measured respectively. By calculating the difference, only the air leakage amount in the peripheral portion of the landing doors 7a and 7b, excluding the air leakage amount in the peripheral portion of the covering member 15, is detected, and the airtightness by the members of the landing doors 7a and 7b is detected. The level can be measured more accurately.
[0054]
As another method, instead of covering the entire peripheral area around the landing doors 7a and 7b with masking tape, a part of the area, for example, the area of the lower part s of the landing doors 7a and 7b shown in FIG. Only the other areas are covered with a masking tape, and in this state, the amount of air leakage from the space S is measured by the same method as described above.
[0055]
In this case, it can be determined that the air leakage occurs in the portion not blocked by the masking tape, that is, in the lower portion s of the landing doors 7a and 7b, and the landing door is based on the amount of air leakage. It is possible to measure the level of airtightness in the lower part s of 7a and 7b.
[0056]
By such a method, it is possible to know in which part around the landing doors 7a and 7b the airtightness is lowered, and therefore it is possible to accurately determine the necessity of repair or replacement of the seal member in that part, and unnecessary. It is possible to avoid waste such as unnecessary repair and replacement.
[0057]
FIG. 3 shows a second embodiment. In the first embodiment, the cover member 15 is affixed to the front surface of the wall body 2, but in this second embodiment, the periphery of the cover member 15 is in contact with the inner peripheral surface of the three-way frame 4. It is designed to be attached to the floor surface below the mouth A.
[0058]
As shown in FIG. 3, a sealing member 40 made of an elastic body such as rubber is attached to the periphery of the covering member 15. The sealing material 40 is in close contact with the inner peripheral surface of the three-sided frame 4 and the floor surface below the entrance / exit A, and further masking is performed between the peripheral edge of the covering member 15 and the inner peripheral surface of the three-sided frame 4 and the floor surface. The tape 41 is affixed, and the space between the peripheral edge of the covering member 15 and the inner peripheral surface of the three-sided frame 4 and the floor surface is thereby sealed.
[0059]
As in the case of the first embodiment, the blower 18, the barometer 19, and the control device 35 are provided in the hall 1 during the operation of the blower 18. The blower 18 has a suction port 21 and a discharge port 22, and an air supply tube 23 is detachably attached to the discharge port 22, and an end portion on the tip side of the air supply tube 23 is a pipe connection portion of the covering member 15. The regulator 25 and the flow meter 26 are provided in the middle of the air supply tube 23.
[0060]
A measurement tube 30 is led out from the barometer 19, and the end of the measurement tube 30 is connected to the pipe connection portion 31 of the covering member 15. The blower 18, the barometer 19, and the flow meter are connected to the control device 35. 26 are connected via cables 36, 37 and 38, respectively.
[0061]
As in the case of the first embodiment, the barometer 19 detects the atmospheric pressure when the atmospheric pressure in the space S on the front side of the landing doors 7a and 7b covered with the covering member 15 is stabilized at a substantially constant value. The flow rate of air into the space S at the time of detection is detected by the flow meter 26, and the level of airtightness due to the sealing members of the landing doors 7a and 7b is determined based on the air flow rate at this time.
[0062]
In the first embodiment, the peripheral portion of the covering member 15 is attached to the front surface of the wall body 2. For this reason, when the front surface of the wall body 2 has a fine uneven shape, it is difficult to seal the covering member 15. In the case of this second embodiment, the peripheral edge of the cover member 15 is attached to the smooth inner peripheral surface of the three-sided frame 4 and the floor surface below the entrance / exit A, so that the cover member 15 is sealed. There are advantages that can be easily achieved.
[0063]
The material of the covering member 15 in the first and second embodiments may be a metal or a resin, and the shape is not limited to a regular plate shape, and is a soft sheet shape. Alternatively, the soft sheet and the rod-like member may be used in a tent shape.
[0064]
If the cover member 15 is made into a soft sheet shape, it can be folded and carried and stored, improving usability.
[0065]
FIG. 5 shows a third embodiment. In this embodiment, a double-smoke type smoke-proof door 50a, 50b is provided at the entrance / exit A as a smoke-proof facility, and the landing doors 7a, 7b have a sealing mechanism. Is not provided.
[0066]
The smoke shielding doors 50a and 50b are normally stored in the storage space 51, and are pushed out of the storage space 51 by a driving device (not shown) when a smoke detector or the like is activated in response to the occurrence of a fire. Thus, the front edges are closed so that they come into contact with each other, and the entrance / exit A is closed by this closing.
[0067]
A sealing member (not shown) as a sealing mechanism is provided around the smoke shielding doors 50a and 50b. When the smoke shielding doors 50a and 50b are closed, the entrance / exit A is sealed and smoked. The FIG. 5 shows a state when the smoke shielding doors 50a and 50b are closed.
[0068]
In the case of this embodiment, the smoke shielding performance when the smoke shielding doors 50a and 50b are closed, that is, the airtightness by the sealing member is measured. When measuring the airtightness, as shown in FIG. 5, the gaps between the landing doors 7a and 7b and the three-way frame 4 and the sill 8, and the gaps between the doors of the landing doors 7a and 7b are respectively masked. 56, almost completely sealed.
[0069]
The smoke shielding doors 50a and 50b are provided with pipe connecting portions 53 and 54, and the hall 1 is provided with a blower 18, a barometer 19, and a control device 35. The blower 18 has a suction port 21 and a discharge port 22, and an air supply tube 23 is detachably attached to the discharge port 22, and an end portion on the tip side of the air supply tube 23 is connected via a pipe connection portion 53. It is connected to the smoke shielding door 50a so as to communicate with the substantially sealed space S between the landing doors 7a, 7b and the smoke shielding doors 50a, 50b, and a regulator 25 and a flow meter 26 are provided in the middle of the air supply tube 23. Is provided.
[0070]
A measurement tube 30 is led out from the barometer 19 and is connected to the smoke shielding door 50 b so that the end portion on the tip side of the measurement tube 30 communicates with the inside of the space S through the pipe connection portion 54. The blower 18, the barometer 19, and the flow meter 26 are connected to the control device 35 via cables 36, 37, and 38, respectively.
[0071]
In this state, as in the case of the first embodiment, the barometer 19 is operated with the measurement tube 30 removed from the pipe connection portion 54 to measure the atmospheric pressure in the hall 1, and the data is controlled. After taking in the device 35, the measurement tube 30 is connected to the pipe connection portion 54.
[0072]
Next, the blower 18 is operated, and air is sent into the space S between the landing doors 7a and 7b and the smoke shielding doors 50a and 50b through the air supply tube 23 from the discharge port 22 of the blower 18. The pressure in the space S rises due to this air feed.
[0073]
The entrance / exit A is closed by the sealing members of the smoke-shielding doors 50a and 50b, so that the air pressure in the space S rises proportionally by the feeding of air into the space S. When the atmospheric pressure in the space S further rises, air leaks from the seal member portions of the smoke shielding doors 50a and 50b to the landing hall 1 as the atmospheric pressure rises.
[0074]
Here, since the air pressure in the space S is stabilized to a substantially constant (predetermined) value when the air feed flow rate into the space S and the air leakage flow rate from the space S are substantially balanced, the regulator 25 is The pressure is adjusted so that the atmospheric pressure in the space S is stabilized at a substantially constant (predetermined) value.
[0075]
When the atmospheric pressure in the space S is stabilized at a substantially constant value, the atmospheric pressure is detected by the barometer 19. Then, the flow rate of air flowing into the space S at this time is detected by the flow meter 26. The air feed flow rate at this time corresponds to the air leak flow rate from the space S. Therefore, by reading the air feed flow rate from the flow meter 26, the air leak flow rate, that is, the airtightness to the seal members of the smoke shielding doors 50a and 50b. Can be judged.
[0076]
That is, when the value of the flow rate detected by the flow meter 26 is small, the level of airtightness of the seal members of the smoke shielding doors 50a and 50b is high, and conversely, when the value of the flow rate detected by the flow meter 26 is large, the seal member. The level of airtightness will be low.
[0077]
As a result, it is possible to confirm the smoke shielding performance by the sealing member of the smoke shielding doors 50a and 50b. If the smoke shielding performance is below a certain level, the sealing member is repaired or replaced.
[0078]
Even in this case, the air supply tube 23 is connected to the suction port 21 of the blower 18, the air in the space S is sucked into the negative pressure in the space S, and the atmospheric pressure in the space S is a substantially constant value. The flow rate of the air sucked from the space S when it is stable is detected by the flow meter 26, and the flow rate of the air leaking from the landing hall 1 into the space S is grasped based on the flow rate, and the smoke shielding doors 50a, 50b It is also possible to measure the level of hermeticity for the sealing member.
[0079]
FIG. 6 shows a fourth embodiment. In this embodiment, a smoke shielding screen 60 is provided as a smoke shielding facility at the entrance / exit A, and no sealing mechanism is provided at the landing doors 7a and 7b. .
[0080]
The smoke shielding screen 60 is normally housed in, for example, an upper part of the entrance / exit A, and is moved downward by a driving device (not shown) when a smoke detector or the like is activated in response to the occurrence of a fire. It is pulled out and stretched at the entrance / exit A, and the entrance / exit A is closed by the smoke shielding screen 60 in the stretched state.
[0081]
A sealing mechanism (not shown) is provided around the smoke shielding screen 60 using a sealing member, a magnet sheet, or the like. When the smoke shielding screen 60 is stretched, the landing doors 7a and 7b and the smoke shielding screen 60 are interposed via the sealing mechanism. The space S between the two is almost sealed and smoke-shielded. FIG. 6 shows a state when the smoke screen 60 is stretched.
[0082]
In this embodiment, the smoke shielding performance when the smoke shielding screen 60 is stretched, that is, the airtightness of the entrance / exit A by the seal mechanism is measured. When measuring the airtightness, as in the case of the third embodiment, the gap between the landing doors 7a, 7b and the three-way frame 4 and the sill 8 and the door contact portions of the landing doors 7a, 7b are measured. The gaps are each almost completely sealed with the masking tape 56.
[0083]
The smoke shielding screen 60 is provided with pipe connection portions 63 and 64, and the hall 18 is provided with a blower 18, a barometer 19, and a control device 35. The blower 18 has a suction port 21 and a discharge port 22, and an air supply tube 23 is detachably attached to the discharge port 22, and an end portion on the tip side of the air supply tube 23 is connected via a pipe connection portion 63. It is connected to the smoke screen 60 so as to communicate with the space S between the landing doors 7 a and 7 b and the smoke screen 60, and a regulator 25 and a flow meter 26 are provided in the middle of the air supply tube 23.
[0084]
A measurement tube 30 is led out from the barometer 19, and is connected to the smoke shielding screen 60 so that the end portion on the tip side of the measurement tube 30 communicates with the inside of the space S through a pipe connection portion 64. The blower 18, the barometer 19, and the flow meter 26 are connected to the control device 35 via cables 36, 37, and 38, respectively.
[0085]
In this state, as in the case of the third embodiment, the barometer 19 is operated with the measurement tube 30 removed from the pipe connection portion 64 to measure the atmospheric pressure in the hall 1, and the data is controlled. After taking in the apparatus 35, the measurement tube 30 is connected to the pipe connection part 64.
[0086]
Next, the blower 18 is operated, and air is sequentially sent from the discharge port 22 of the blower 18 into the space S between the landing doors 7 a and 7 b and the smoke shielding screen 60 through the air supply tube 23. The pressure in the space S rises due to this air feed.
[0087]
The entrance / exit A is closed by the sealing mechanism of the smoke shielding screen 60, and therefore, the air pressure in the space S rises proportionally by the feeding of air into the space S. When the air pressure in the space S further increases, air leaks from the seal mechanism portion of the smoke shielding screen 60 to the landing hall 1 as the air pressure increases.
[0088]
Here, when the air feed flow rate into the space S and the air leak flow rate from the space S are substantially balanced, the pressure in the space S is stabilized at a substantially constant value. The pressure in S is adjusted so as to be stabilized at a substantially constant value.
[0089]
When the atmospheric pressure in the space S is stabilized at a substantially constant value, the atmospheric pressure is detected by the barometer 19. Then, the flow rate of air flowing into the space S at this time is detected by the flow meter 26. The air feed flow rate at this time corresponds to the air leak flow rate from the space S. Therefore, by reading the air feed flow rate from the flow meter 26, the air leak flow rate, that is, the level of airtightness with respect to the seal mechanism of the smoke shielding screen 60 is obtained. Can be judged.
[0090]
That is, when the value of the flow rate detected by the flow meter 26 is small, the level of air tightness of the seal mechanism of the smoke screen 60 is high, and conversely, when the value of the flow rate detected by the flow meter 26 is large, the air tightness of the seal mechanism The sex level will be low.
[0091]
As a result, it is possible to confirm the smoke shielding performance by the sealing mechanism of the smoke shielding screen 60. If the smoke shielding performance is below a certain level, the sealing mechanism is repaired or replaced.
[0092]
In addition, the confirmation work of the smoke shielding performance described above can be performed not only as a single work but also as a part of the regular maintenance and inspection work of the elevator.
[0093]
And when performing the check work of smoke shielding performance in conjunction with the maintenance check work, the check work may be advanced while the elevator is operated or the check work may be advanced with the operation stopped.
[0094]
The airtightness measuring device includes a cover member 15, a blower 18, a barometer 19, a regulator 25, a flow meter 26, a control device 35, and the like. These members and devices are assembled as one kit, and the kit is assembled into an elevator machine. It can also be configured to be stored in an appropriate storage location such as a room.
[0095]
In this case, it is possible to easily and efficiently check the smoke shielding performance by taking out the kit from the storage location at the time of maintenance and inspection of the elevator.
[0096]
Further, as the gas fed into the space S, it is also possible to use a smoke-like gas or a colored gas instead of a colorless and transparent gas. In this case, there is an advantage that the gas leaking from the space S can be visually confirmed, and the portion where the gas leaks can be visually identified.
[0097]
Further, the present invention is not limited to the configuration shown in each of the embodiments, and can be implemented with various modifications of each configuration. For example, a blower is used as a means for generating a pressure difference, but other blowers, pumps, compressors, vacuum cleaners, and the like can be used.
[0098]
Further, the air flow rate from the blower is adjusted by the regulator, but it is also possible to use a valve that can increase or decrease the output of the blower or adjust the opening degree.
[0099]
In the case of using a regulator, it is possible to adopt a mode in which the regulator is provided between the blower and the flow meter, a mode in which the regulator is provided on the downstream side of the flow meter, and a mode in which the regulator is provided on the suction port side of the blower.
[0100]
When the regulator is provided on the downstream side of the flow meter, it is possible to use a barometer attached to the regulator as means for measuring the atmospheric pressure.
[0101]
Further, instead of the masking tape used in the embodiment, other tapes, magnet sheets, putty, sealing materials, etc. can be used.
[0102]
In each of the above embodiments, the control device is used. However, it is possible to manually operate each device such as a means for generating a pressure difference without using the control device. In addition, the atmospheric pressure is measured in a state where the atmospheric pressure in the space S is stabilized at a substantially constant value. However, when the atmospheric pressure is slowly increased or decreased, it is not always necessary to stabilize the atmospheric pressure. It is possible to measure with accuracy of.
[0103]
【The invention's effect】
As described above, according to the present invention, it is possible to easily and appropriately confirm the smoke shielding performance of the landing door and the smoke shielding equipment after being installed in the building at the landing hall of the building.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external appearance of an elevator entrance / exit.
FIG. 2 is a perspective view showing a closed airtightness measuring apparatus according to a first embodiment of the present invention.
FIG. 3 is a perspective view showing a closed airtightness measuring apparatus according to a second embodiment of the present invention.
FIG. 4 is an enlarged cross-sectional view showing a structure of a peripheral portion of a cover member in the closed airtightness measuring apparatus.
FIG. 5 is a plan view showing a closed airtightness measuring apparatus according to a third embodiment of the present invention.
FIG. 6 is a plan view showing a closed airtightness measuring apparatus according to a fourth embodiment of the present invention.
[Explanation of symbols]
A ... elevator entrance / exit, 1 ... landing hall, 4 ... three-way frame, 7a, 7b ... landing door, 8 ... sill, 15 ... covering member, 16 ... masking tape, 18 ... blower, 19 ... barometer, 25 ... regulator, 26 ... Flow meter, 35 ... Control device, 41 ... Masking tape, 50a, 50b ... Smoke shield door, 51 ... Masking tape, 60 ... Smoke shield screen.

Claims (8)

A landing door that closes the elevator gate,
Door covering means for substantially sealing the space in front of the landing door;
A pressure difference generating means for pressurizing or depressurizing the space substantially sealed by the door covering means;
Atmospheric pressure measuring means for measuring the atmospheric pressure in the substantially sealed space;
Gas flow rate measuring means for measuring the flow rate of gas flowing between the substantially sealed space and the pressure difference generating means,
The apparatus for measuring closed airtightness of an elevator entrance / exit, wherein the pressure difference generating means, the pressure measuring means, and the pressure flow measuring means are arranged in a landing hall in front of the landing door .   2. The closed airtightness measuring apparatus for an elevator entrance / exit according to claim 1, further comprising flow rate adjusting means for adjusting a flow rate of gas flowing between the substantially sealed space and the pressure difference generating means. . Using the closed airtightness measuring device for an elevator entrance according to claim 1 or 2,
Gas that flows between the substantially sealed space and the pressure difference generating means when the pressure in the substantially sealed block is stabilized at a substantially constant value during operation of the pressure difference generating means. A closed airtightness measuring method for an elevator entrance / exit, wherein the airtightness of the elevator entrance / exit by the landing door is measured based on the gas flow rate. Using the closed airtightness measuring device for an elevator entrance according to claim 1 or 2,
The air gap difference generating means is substantially sealed during the operation of the atmospheric pressure difference generating means, both in a state where the clearance around the construction elevator landing door is sealed with a sealing means and in a state where the sealing means is removed. When the atmospheric pressure in the closed space is stabilized at a substantially constant value, the flow rate of the gas flowing between the substantially sealed space and the pressure difference generating means is measured, and the gas flow in one state is measured. A closed airtightness measuring method for an elevator entrance / exit, wherein the airtightness of the elevator entrance / exit by the landing door is measured based on a difference between a flow rate and a gas flow rate in the other state. Using the closed airtightness measuring device for an elevator entrance according to claim 1 or 2,
When a gap in a partial section around the construction elevator landing door is sealed with a sealing means, and the pressure in the substantially sealed space is stabilized at a substantially constant value during the operation of the pressure difference generating means. The flow rate of the gas flowing between the substantially sealed space and the pressure difference generating means is measured, and the closed airtightness of the elevator doorway by the landing door is measured based on the flow rate of the gas. A method for measuring the airtightness of an elevator entrance and exit. A landing door that closes the elevator gate,
Smoke shielding means that closes the elevator entrance and exit separately from the landing door to make the space on the front side of the landing door almost sealed,
Sealing means for sealing a gap around the elevator hall door;
A pressure difference generating means for pressurizing or depressurizing the inside of the space substantially sealed by the smoke shielding means;
Atmospheric pressure measuring means for measuring the atmospheric pressure in the substantially sealed space;
Gas flow rate measuring means for measuring the flow rate of gas flowing between the substantially sealed space and the pressure difference generating means,
The apparatus for measuring closed airtightness of an elevator entrance / exit, wherein the pressure difference generating means, the pressure measuring means, and the pressure flow measuring means are arranged in a landing hall in front of the landing door . The closed airtightness measuring apparatus for an elevator entrance / exit according to claim 6, further comprising flow rate adjusting means for adjusting a flow rate of gas flowing between the substantially sealed space and the pressure difference generating means. . Using the apparatus for measuring the airtightness of an elevator entrance / exit according to claim 6 or 7,
During the operation of the pressure difference generating means, when the pressure in the substantially sealed space is stabilized at a substantially constant value, the gas flowing between the substantially sealed space and the pressure difference generating means A closed airtightness measuring method for an elevator entrance / exit, characterized by measuring the flow rate and measuring the closed airtightness of the elevator entrance / exit by the smoke shielding means based on the gas flow rate.

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