CN114441447A

CN114441447A - Air chamber for sulfur hexafluoride detection

Info

Publication number: CN114441447A
Application number: CN202111671176.6A
Authority: CN
Inventors: 崔鹏; 郭茂丰; 高林波; 王学文; 孙健; 王利强; 肖伟航
Original assignee: Hohhot Kelin Thermal Power Co Ltd
Current assignee: Hohhot Kelin Thermal Power Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-06
Anticipated expiration: 2041-12-31
Also published as: CN114441447B

Abstract

The invention discloses a gas chamber for sulfur hexafluoride detection, which comprises a gas chamber assembly, a gas chamber assembly and a gas pipeline connector, wherein the gas chamber assembly comprises a cavity, lens seats arranged at two ends of the cavity, a lens adjusting seat arranged at one end of the cavity, and the gas pipeline connector arranged on the cavity; and the adjusting assembly comprises a fixing piece arranged at the bottom of the cavity and a lifting piece arranged at the bottom of the fixing piece. According to the invention, through the arrangement of the air chamber component and the adjusting component, the air chamber of the device not only can be better used for gas detection, but also can be adjusted in height after being installed, so that different experimental requirements are met, and the device can be very conveniently connected with a gas pipeline.

Description

Air chamber for sulfur hexafluoride detection

Technical Field

The invention relates to the technical field of gas detection, in particular to a gas chamber for detecting sulfur hexafluoride.

Background

Tunable laser modulation (TDLAS) is one of the gas sensing technologies developed in recent years, and has been widely regarded by the industry due to its advantages of high accuracy, good reliability and long lifetime. The core of the technology lies in that the absorption peak of the gas is scanned through the modulation of the laser frequency, and then the second harmonic in the demodulated signal after the laser passing through the gas chamber is received, so that the gas concentration is calculated. Because the volume of the sensor is limited, the gas chamber cannot be made very long, so that the second harmonic of a concentration signal contained after laser passes through the gas chamber is very weak, and the noise caused by scattered light must be reduced as much as possible from the light path in addition to a sampling electronic device with high resolution. The design of the air chamber is particularly important.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made in view of the above and/or other problems with existing gas chambers for sulfur hexafluoride-based detection.

Therefore, the present invention has been made to solve the problems that the position state of the gas chamber cannot be changed after the installation of the general gas chamber, and the connection between the gas pipe and the gas chamber is inconvenient.

In order to solve the technical problems, the invention provides the following technical scheme: a gas chamber for sulfur hexafluoride detection comprises a gas chamber assembly, a gas chamber assembly and a gas pipeline connector, wherein the gas chamber assembly comprises a cavity, lens seats arranged at two ends of the cavity, a lens adjusting seat arranged at one end of the cavity, and the gas pipeline connector arranged on the cavity; and the adjusting assembly comprises a fixing piece arranged at the bottom of the cavity and a lifting piece arranged at the bottom of the fixing piece.

As a preferable scheme of the gas chamber for detecting sulfur hexafluoride, the gas chamber comprises: the fixing piece comprises a first hoop arranged at the top of the cavity and a second hoop arranged at the bottom of the cavity.

As a preferable scheme of the gas chamber for detecting the sulfur hexafluoride, the gas chamber comprises the following components in percentage by weight: the fixing piece further comprises a lifting plate arranged at the bottom of the second hoop and a limiting rod arranged at the end part of the lifting plate.

As a preferable scheme of the gas chamber for detecting sulfur hexafluoride, the gas chamber comprises: the mounting still including set up in the mounting panel of gag lever post bottom, and set up in the fixing support at mounting panel top.

As a preferable scheme of the gas chamber for detecting sulfur hexafluoride, the gas chamber comprises: the lifting piece comprises a screw rod arranged at the end part of the lifting plate, a first bevel gear arranged at the bottom of the screw rod, a second bevel gear meshed with the first bevel gear, a rotating shaft arranged in the second bevel gear, and a rotating disc arranged at the end part of the rotating shaft.

As a preferable scheme of the gas chamber for detecting sulfur hexafluoride, the gas chamber comprises: the connecting component comprises a socket and a plug arranged in the socket; and the number of the first and second groups,

the clamping assembly comprises a fastening piece arranged in the socket, a transmission piece arranged on one side of the fastening piece, a fixing piece arranged between the transmission pieces, a locking piece arranged at the bottom of the transmission piece, and a fixing piece arranged between the transmission pieces.

As a preferable scheme of the gas chamber for detecting sulfur hexafluoride, the gas chamber comprises: the fastener comprises an inner pipeline arranged inside the socket, a stop block arranged at the inner top of the inner pipeline, a first spring arranged at the end part of the stop block, a moving rod arranged inside the first spring, a clamping block arranged on the top surface of the inner pipeline, a first connecting plate arranged at the top of the clamping block, a second connecting plate arranged at the top of the inner wall of the socket and a second spring arranged between the first connecting plate and the second connecting plate, wherein one end of the first spring is fixedly connected with the stop block, one end of the moving rod is fixedly connected with the stop block, and the other end of the moving rod is also provided with first sawteeth. The first connecting plate is fixedly connected with the clamping block, and two ends of the second spring are fixedly connected with the first connecting plate and the second connecting plate respectively.

As a preferable scheme of the gas chamber for detecting sulfur hexafluoride, the gas chamber comprises: the driving medium including set up in the first gear of removal rod tip, set up in the rack of the first gear other end, set up in press from both sides tight piece tip ground cam, set up in the pivot of cam bottom, and set up in the second gear of pivot bottom, the rack only has its top some position to be provided with the second sawtooth, cam and second gear all with pivot fixed connection.

As a preferable scheme of the gas chamber for detecting sulfur hexafluoride, the gas chamber comprises: the locking piece including set up in the hand pulley of interior conduit bottom, set up in the surperficial spacing hook in interior conduit bottom, and set up in the third spring of hand pulley bottom, the side surface of hand pulley still is provided with the third sawtooth uniformly, the top surface of hand pulley still is provided with spacing tooth uniformly, the one end of third spring with the bottom fixed connection of hand pulley.

As a preferable scheme of the gas chamber for detecting sulfur hexafluoride, the gas chamber comprises: the fixing piece comprises a first fixing seat arranged on the outer wall of the inner pipeline and a second fixing seat arranged on the inner side wall of the socket.

The invention has the beneficial effects that: according to the invention, through the arrangement of the air chamber component and the adjusting component, the air chamber of the device not only can be better used for gas detection, but also can be adjusted in height after being installed, so that different experimental requirements are met, and the device can be very conveniently connected with a gas pipeline.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

fig. 1 is an overall configuration diagram of a gas chamber for sulfur hexafluoride detection.

FIG. 2 is another perspective view of a chamber for sulfur hexafluoride based detection.

Fig. 3 is a view showing a structure of a lens holder of an air chamber for sulfur hexafluoride detection.

Fig. 4 is a view showing a structure of a lens adjusting seat of an air chamber for sulfur hexafluoride detection.

Fig. 5 is a view showing a structure of a gas pipe joint used in a sulfur hexafluoride-based detection gas cell.

Fig. 6 is a view showing an internal structure of a gas chamber for sulfur hexafluoride detection.

Fig. 7 is an oblique cross-sectional view of a gas chamber for sulfur hexafluoride detection.

FIG. 8 is a view showing the engagement of a cam and a clamp block of an air chamber for sulfur hexafluoride detection.

Fig. 9 is a diagram showing the fitting of the limit hook and the limit tooth in the air chamber for sulfur hexafluoride detection.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1, a first embodiment of the invention provides a gas cell for sulfur hexafluoride detection, which includes a gas cell assembly 100 and an adjusting assembly 200, wherein the gas cell assembly 100 can perform effective spectrum detection on gas, and the adjusting assembly 200 can perform height adjustment on the gas cell.

Specifically, the air chamber assembly 100 includes a cavity 101, lens seats 102 disposed at two ends of the cavity 101, a lens adjusting seat 103 disposed at one end of the cavity 101, and an air pipe connector S disposed on the cavity 101. Lens ports at two ends of the air chamber can be detached, so that the lens and the light path structure are convenient to replace and adjust; the design material of the whole air chamber adopts the acid-resistant stainless steel cylindrical material imported from abroad, and has strong acid resistance; the incident light port of the air chamber is designed more precisely, and is convenient to be connected with the incident collimating lens.

Preferably, the adjusting assembly 200 includes a fixing member 201 disposed at the bottom of the chamber 101, and a lifting member 202 disposed at the bottom of the fixing member 201. The fixing member 201 mainly functions as a fixing device structure, and the lifting member 202 functions to lift the air chamber.

Example 2

Referring to fig. 2 to 4, a second embodiment of the present invention is based on the above embodiment.

Specifically, the fixing member 201 includes a first band 201a disposed at the top of the cavity 101, and a second band 201b disposed at the bottom of the cavity 101. The bottom of the second hoop 201b is fixedly connected with the top of the lifting plate 201c, and the first hoop 201a is connected with the second hoop 201b through a bolt.

Preferably, the fixing member 201 further includes a lifting plate 201c disposed at the bottom of the second band 201b, and a limiting rod 201d disposed at an end of the lifting plate 201 c. The number of the limiting rods 201d is two, and the limiting rods are arranged diagonally and are connected with the lifting plate 201c in a sliding mode.

Preferably, the fixing member 201 further includes a mounting plate 201e disposed at the bottom of the limiting rod 201d, and a fixing support 201f disposed at the top of the mounting plate 201 e. The mounting plate 201e is provided with a threaded hole, which can be fixedly connected with the outside through a bolt.

Further, the lifting member 202 includes a screw rod 202a disposed at an end of the lifting plate 201c, a first bevel gear 202b disposed at a bottom of the screw rod 202a, a second bevel gear 202c engaged with the first bevel gear 202b, a rotating shaft 202d disposed inside the second bevel gear 202c, and a rotating disc 202e disposed at an end of the rotating shaft 202 d. The number of the lead screws 202a is two, and is also diagonally arranged. The rotating disc 202e and the second bevel gear 202c are both fixedly connected with the rotating shaft 202 d.

When the air chamber lifting device is used, the rotating disc 202e is rotated when the height of the air chamber needs to be adjusted, at this time, the rotating shaft 202d can drive the second bevel gear 202c to rotate, the second bevel gear 202c can drive the first bevel gear 202b meshed with the second bevel gear 202c to rotate, and when the first bevel gear 202b rotates, the lifting plate 201c can be lifted upwards due to the rotation of the screw rod 202a, so that the lifting of the air chamber is completed.

Example 3

Referring to FIGS. 5-9, a third embodiment of the present invention is based on the first two embodiments.

Specifically, the connecting assembly 300 includes a socket 301, and a plug 302 disposed inside the socket 301; and a clamping assembly 400, which includes a fastening member 401 disposed inside the socket 301, a transmission member 402 disposed on one side of the fastening member 401, a fixing member 403 disposed between the transmission members 402, and a locking member 403 disposed at the bottom of the transmission member 402. The socket 301 and the plug 302 are respectively connected with an external air pipe, and the socket and the plug can be connected by opposite insertion. The plug 302 and the socket 301 can be tightly connected together through the fastener 401, and cannot easily shake; the transmission member 402 is used for linking the fastening member 401 and the locking member 403, so that the locking member 403 can be operated to drive the fastening member 401 to lock the plug 302 and the socket 301. The bottom surface of the plug 301 is also uniformly provided with a plurality of protrusions 301 a. The protrusion 301a is formed integrally with the plug 301, and has a shape of a funnel with a long top and a narrow bottom, so that the plug 301 can be conveniently inserted.

Preferably, the fastening member 401 includes an inner pipe 401a disposed inside the socket 301, a stopper 401b disposed at the inner top of the inner pipe 401a, a first spring 401c disposed at an end of the stopper 401b, a moving rod 401d disposed inside the first spring 401c, a clamping block 401e disposed on the top surface of the inner pipe 201a, a first connecting plate 401e-1 disposed at the top of the clamping block 401e, a second connecting plate 401e-2 disposed at the top of the inner wall of the socket 301, and a second spring 401f disposed between the first connecting plate 401e-1 and the second connecting plate 401e-2, one end of the first spring 401c is fixedly connected to the stopper 401b, one end of the moving rod 401d is fixedly connected to the stopper 401b, and the other end of the moving rod 401d is further provided with a first serration 401 d-1. The first connecting plate 401e-1 is fixedly connected with the clamping block 401e, and two ends of the second spring 401f are respectively fixedly connected with the first connecting plate 401e-1 and the second connecting plate 401 e-2. The stoppers 401b are symmetrically arranged, and have a certain recess in the middle thereof, the shape of which is adapted to the protrusion 302a, and the stoppers 401b can horizontally move in the gaps at the top of the inner pipe 401 a. The first spring 401c is a compression spring, and the stopper 401b moves following the horizontal movement of the moving rod 401 d. The moving rod 401d is engaged with the first gear 402a through the first saw tooth 401d-1 at the other end thereof. The first connecting plate 401e-1 is fixedly connected with the clamping block 401e, and two ends of the second spring 401f are respectively fixedly connected with the first connecting plate 401e-1 and the second connecting plate 401 e-2. The second spring 401f is an extension spring, and the second spring 401f is in an extended state when the clamp block 401e is clamped.

Preferably, the transmission member 402 includes a first gear 402a disposed at an end of the moving rod 401d, a rack 402b disposed at the other end of the first gear 402a, a cam 402c disposed at an end of the clamping block 401e, a rotating shaft 402d disposed at a bottom of the cam 402c, and a second gear 402e disposed at a bottom of the rotating shaft 402d, wherein only a portion of a top of the rack 402b is provided with a second saw tooth 402b-1, and both the cam 402c and the second gear 402e are fixedly connected to the rotating shaft 402 d. Only a portion of the top of the rack 402b is provided with second serrations 402 b-1. The rack 402b is engaged with the first gear 402a by the second saw tooth 402b-1, and its position is just misaligned with the moving bar 401 d. The rack 402b has an "L" shape at the bottom, and a portion thereof is located below the hand pulley 403 a. The cam 402c and the second gear 402e are both fixedly connected to the rotating shaft 402 d. The cam 402c engages a rib on the clamp block 401e and the position of the clamp block 401e changes as the cam 402c rotates. That is, the clamping and unclamping of the clamping block 401e is directly controlled by the cam 402c and the second spring 401 f.

Preferably, the locking member 403 includes a hand pulley 403a disposed at the bottom of the inner pipe 401a, a limit hook 403b disposed on the bottom surface of the inner pipe 401a, and a third spring 403c disposed at the bottom of the hand pulley 403a, the side surface of the hand pulley 403a is further uniformly provided with third saw teeth 403a-1, the top surface of the hand pulley 403a is further uniformly provided with limit teeth 403a-2, and one end of the third spring 403c is fixedly connected to the bottom of the hand pulley 403 a. The third saw tooth 403a-1 is engaged with the second gear 402e, and when the hand pulley 403a rotates, the second gear 402e also rotates. The limit hook 403b is a metal elastic sheet and is normally buckled on the limit tooth 403a-2, so that the hand pulley 403a only allows one-way rotation in this state. The third spring 403c is a compression spring, and mainly plays a role of return.

Further, the fixing member 404 includes a first fixing seat 404a disposed on an outer wall of the inner pipe 401a, and a second fixing seat 404b disposed on an inner sidewall of the socket 301.

In use, the plug 302 is inserted directly into the socket 301 and the hand wheel 403a is rotated by a finger in the direction indicated until the wheel is stationary indicating that both the plug 302 and the socket 301 have been tightly connected. In this process, when the bottom of the plug 302 is inserted into the inner pipe 401a, the stopper 401b will clamp the plug 302 under the action of the first spring 401c, so as to ensure the sealing property. When the hand pulley 403a rotates, the second gear 402e is driven to rotate, and the second gear 402e drives the rotating shaft 402d to rotate, so as to drive the cam 402c to rotate. After a certain rotation, the flange end of the cam 402c will clamp the clamping block 401e tightly on the plug 302, ensuring the stability of the connection. The limiting hook 403b at the top of the hand pulley 403a is matched with the limiting tooth 403a-2, so that the hand pulley can only rotate in one direction, and the clamping block 401e is prevented from loosening due to the rotation of the hand pulley 403 a. When the handle is needed to be detached, the hand pulley 403a is only needed to be pulled downwards according to the direction shown in the figure, and at this time, the rack 402b is pulled downwards by the downward movement of the hand pulley 403a, so as to drive the first gear 402a to rotate, and further drive the moving rod 401d to move to pull the stopper 401b towards two sides. Meanwhile, the hand pulley 403a moves downwards to be separated from the second gear 402e, the cam 402c loses the blocking force after the second gear 402e loses the limitation, and the clamping block 401e moves towards two sides under the action of the second spring 401f, so that the plug 402 can be conveniently and smoothly pulled out. The whole device is compact in structure and simple to operate, and certain good air tightness can be guaranteed under the condition that connection is stable.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. The utility model provides an air chamber based on sulfur hexafluoride detects usefulness which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the air chamber assembly (100) comprises a chamber body (101), lens seats (102) arranged at two ends of the chamber body (101), a lens adjusting seat (103) arranged at one end of the chamber body (101), and an air pipeline connector (S) arranged on the chamber body (101); and the number of the first and second groups,

the adjusting assembly (200) comprises a fixing piece (201) arranged at the bottom of the cavity (101), and a lifting piece (202) arranged at the bottom of the fixing piece (201).

2. A gas cell for sulfur hexafluoride based detection as claimed in claim 1, wherein: the fixing piece (201) comprises a first hoop (201a) arranged at the top of the cavity (101) and a second hoop (201b) arranged at the bottom of the cavity (101).

3. A gas cell for sulfur hexafluoride based detection as claimed in claim 2, wherein: the fixing piece (201) further comprises a lifting plate (201c) arranged at the bottom of the second hoop (201b), and a limiting rod (201d) arranged at the end part of the lifting plate (201 c).

4. A gas cell for sulfur hexafluoride based detection as claimed in claim 3, wherein: the fixing piece (201) further comprises a mounting plate (201e) arranged at the bottom of the limiting rod (201d) and a fixing support (201f) arranged at the top of the mounting plate (201 e).

5. A gas cell for sulfur hexafluoride based detection as claimed in claim 4, wherein: the lifting piece (202) comprises a screw rod (202a) arranged at the end part of the lifting plate (201c), a first bevel gear (202b) arranged at the bottom of the screw rod (202a), a second bevel gear (202c) meshed with the first bevel gear (202b), a rotating shaft (202d) arranged inside the second bevel gear (202c), and a rotating disc (202e) arranged at the end part of the rotating shaft (202 d).

6. A gas pipe connector for a sulfur hexafluoride detection based gas chamber as claimed in claims 1 to 5, wherein: a connection assembly (300) comprising a socket (301), and a plug (302) disposed inside the socket (301); and (c) a second step of,

the clamping assembly (400) comprises a fastening piece (401) arranged inside the socket (301), a transmission piece (402) arranged on one side of the fastening piece (401), a fixing piece (403) arranged between the transmission pieces (402), a locking piece (403) arranged at the bottom of the transmission piece (402), and a fixing piece (404) arranged between the transmission pieces (402).

7. A gas pipe connector for a sulfur hexafluoride detection based gas chamber as claimed in claims 1 to 5, wherein: the fastener (401) comprises an inner pipe (401a) arranged inside the socket (301), a stop block (401b) arranged at the inner top of the inner pipe (401a), a first spring (401c) arranged at the end part of the stop block (401b), a moving rod (401d) arranged inside the first spring (401c), a clamping block (401e) arranged on the top surface of the inner pipe (201a), a first connecting plate (401e-1) arranged at the top of the clamping block (401e), a second connecting plate (401e-2) arranged at the top of the inner wall of the socket (301), and a second spring (401f) arranged between the first connecting plate (401e-1) and the second connecting plate (401e-2), wherein one end of the first spring (401c) is fixedly connected with the stop block (401b), and one end of the moving rod (401d) is fixedly connected with the stop block (401b), the other end of the moving rod (401d) is also provided with a first sawtooth (401 d-1). The first connecting plate (401e-1) is fixedly connected with the clamping block (401e), and two ends of the second spring (401f) are respectively fixedly connected with the first connecting plate (401e-1) and the second connecting plate (401 e-2).

8. A gas pipe connector for a sulfur hexafluoride detection based gas chamber as claimed in claims 1 to 5, wherein: the transmission piece (402) comprises a first gear (402a) arranged at the end part of the moving rod (401d), a rack (402b) arranged at the other end of the first gear (402a), a cam (402c) arranged at the end part of the clamping block (401e), a rotating shaft (402d) arranged at the bottom of the cam (402c), and a second gear (402e) arranged at the bottom of the rotating shaft (402d), wherein the rack (402b) is only provided with a second saw tooth (402b-1) at one part of the top of the rack, and the cam (402c) and the second gear (402e) are both fixedly connected with the rotating shaft (402 d).

9. The gas pipeline connector for a sulfur hexafluoride detection-based gas chamber as claimed in claims 1-5, wherein: the locking piece (403) comprises a hand pulley (403a) arranged at the bottom of the inner pipeline (401a), a limit hook (403b) arranged on the surface of the bottom of the inner pipeline (401a), and a third spring (403c) arranged at the bottom of the hand pulley (403a), wherein the side surface of the hand pulley (403a) is also uniformly provided with third saw teeth (403a-1), the top surface of the hand pulley (403a) is also uniformly provided with limit teeth (403a-2), and one end of the third spring (403c) is fixedly connected with the bottom of the hand pulley (403 a).

10. A gas pipe connector for a sulfur hexafluoride detection based gas chamber as claimed in claims 1 to 5, wherein: the fixing piece (404) comprises a first fixing seat (404a) arranged on the outer wall of the inner pipeline (401a) and a second fixing seat (404b) arranged on the inner side wall of the socket (301).