CN204556318U - A kind of use compressed-air actuated coal dust sampling sealing socket - Google Patents

A kind of use compressed-air actuated coal dust sampling sealing socket Download PDF

Info

Publication number
CN204556318U
CN204556318U CN201520270788.8U CN201520270788U CN204556318U CN 204556318 U CN204556318 U CN 204556318U CN 201520270788 U CN201520270788 U CN 201520270788U CN 204556318 U CN204556318 U CN 204556318U
Authority
CN
China
Prior art keywords
inner core
pedestal
coal dust
air actuated
dust sampling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201520270788.8U
Other languages
Chinese (zh)
Inventor
侯凡军
刘科
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201520270788.8U priority Critical patent/CN204556318U/en
Application granted granted Critical
Publication of CN204556318U publication Critical patent/CN204556318U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of use compressed-air actuated coal dust sampling sealing socket, comprise pedestal, described pedestal hollow, internal sleeve has an inner core, described inner core is also hollow, and inner core top is flexibly connected with pedestal, forms a seal chamber between outside inner core and inside pedestal, after inner core moves, the inner chamber of inner core and pedestal inner space; Described pedestal top is provided with gland and seals pedestal and inner core, and the top of described inner core is provided with the upper opening that end cap seals inner core; The outer wall of described pedestal is provided with draft tube.Use compressed-air actuated sampling sealing socket to be arranged on powder feeding pipes, effective sealing can be carried out to wind powder air-flow in pipeline, improve working environment.By installing sealing snare additional in inner core upper outside and pedestal upper inner connection of thread, and compressing with gland, can pressurized air be avoided completely to leak, improve pressurized air and spray into wind speed in powder feeding pipes, enhance sealing effectiveness.

Description

A kind of use compressed-air actuated coal dust sampling sealing socket
Technical field
The utility model relates to coal dust sampling technique field, particularly relates to a kind of use compressed-air actuated coal dust sampling sealing socket.
Background technology
For the fuel-burning power plant adopting unit pulverized-coal system, fineness of pulverized coal and primary air velocity are the important indicators affecting pulverized coal firing boiler safety and economic operation, need periodic detection.Expect the ducted fineness of pulverized coal of primary air piping and primary air velocity, need to carry out coal dust sampling with coal dust sampling gun, carry out primary air speed measuring simultaneously.Elbow type coal dust sampling gun is the ideal device carrying out coal dust sampling, and pitot tube is the standard set-up carrying out primary air speed measuring, and its structural representation as depicted in figs. 1 and 2.
Flow media during hot operation in primary air piping is wind powder mixture, and pressure is 1 ~ 2kPa about.When coal dust sampling gun or pitot tube stretch in First air pipeline, if sealing effectiveness is bad, can there is leakage of pulverized coal in the base place that coal dust sampling gun or pitot tube stretch into pipeline, and personnel are healthy in harm sampling, also pollute site environment.
Therefore need a kind of sampling sealing device, thoroughly solve dust leakage problem when using elbow type coal dust sampling gun or pitot tube.
Utility model content
The purpose of this utility model is exactly to solve the problem, and provides a kind of use compressed-air actuated coal dust sampling sealing socket, is arranged on powder feeding pipes, can carries out effective sealing, improve working environment to wind powder air-flow in pipeline.
To achieve these goals, the utility model adopts following technical scheme:
A kind of use compressed-air actuated coal dust sampling sealing socket, comprise pedestal, described pedestal hollow, internal sleeve has an inner core, described inner core is also hollow, and inner core top is flexibly connected with pedestal, forms a seal chamber between outside inner core and inside pedestal, after inner core moves, the inner chamber of inner core and pedestal inner space; Described pedestal top is provided with gland and seals pedestal and inner core, and the top of described inner core is provided with the upper opening that end cap seals inner core; The outer wall of described pedestal is provided with draft tube.
O-ring seal is provided with by the gap sealing between pedestal and inner core between described gland and pedestal.
Described draft tube is provided with ball valve.
Described pedestal inner chamber is divided into three sections, is followed successively by first paragraph, second segment and the 3rd section from top to bottom, the internal diameter that the internal diameter of described first paragraph is greater than the 3rd section, being communicated with the 3rd period with first paragraph respectively up and down of described second segment, the truncated conical shape becoming to stand upside down; Described inner core is positioned at pedestal first paragraph, and the bottom face of inner core is the conical surface, the medial surface fitted seal of the bottom face of described inner core and the described second segment of pedestal, after inner chamber moves, forms passage between the medial surface of the bottom face of inner core and the described second segment of pedestal.
The threaded engagement that the inner side on described pedestal top is provided with screw thread and inner core upper outside fixes inner core.
The outside on described pedestal top is provided with the threaded engagement stationary gland of screw thread and gland inner ring.
The threaded engagement that the inner side on described inner core top is provided with outside screw thread and end cap fixes end cap.
Described pedestal is welded on heat power plant boiler powder feeding pipes.
The inner chamber of described pedestal is communicated with powder feeding pipes.
The beneficial effects of the utility model are:
1 uses compressed-air actuated sampling sealing socket to be arranged on powder feeding pipes, can carry out effective sealing, improve working environment to wind powder air-flow in pipeline.
2 by installing sealing snare additional in inner core upper outside and pedestal upper inner connection of thread, and compress with gland, can pressurized air be avoided completely to leak, and improves pressurized air and spray into wind speed in powder feeding pipes, enhance sealing effectiveness.
Accompanying drawing explanation
Fig. 1 is elbow type coal dust sampling gun;
Fig. 2 is pitot tube instrumentation plan;
Fig. 3 be the utility model use time structural representation;
Fig. 4 be the utility model when not using structural representation;
Wherein, 1-end cap, 2-inner core, 3-gland, 4-O-ring seal, 5-ball valve, 6-pedestal.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
As shown in Figure 3, a kind of use compressed-air actuated coal dust sampling sealing socket, comprise pedestal 6, pedestal 6 hollow, internal sleeve has an inner core 2, and inner core 2 is also hollow, and inner core 2 top is flexibly connected with pedestal 6, a seal chamber is formed between outside inner core 2 and inside pedestal 6, after inner core 2 moves, the inner chamber of inner core 2 and pedestal 6 inner space; Pedestal 6 top is provided with gland 3 and seals pedestal 6 and inner core 2, and the top of inner core 2 is provided with the upper opening that end cap 1 seals inner core 2; The outer wall of pedestal 6 is provided with draft tube.Draft tube is provided with ball valve 5.
O-ring seal 4 is provided with by the gap sealing between pedestal 6 and inner core 2 between gland 3 and pedestal 6.
Pedestal 6 inner chamber is divided into three sections, is followed successively by first paragraph, second segment and the 3rd section from top to bottom, the internal diameter that the internal diameter of first paragraph is greater than the 3rd section, and being communicated with the 3rd period with first paragraph respectively up and down of second segment, the truncated conical shape becoming to stand upside down, has a conical surface; Inner core 2 is positioned at pedestal 6 first paragraph, and the bottom face of inner core 2 is the conical surface tilted.The medial surface fitted seal of the bottom face of inner core 2 and the second segment of pedestal 6, after inner core 2 moves, forms passage between the medial surface of the bottom face of inner core 2 and the second segment of pedestal 6.
The threaded engagement that the inner side on pedestal 6 top is provided with screw thread and inner core 2 upper outside fixes inner core 2.The outside on pedestal 6 top is provided with the threaded engagement stationary gland 3 of screw thread and gland 3 inner ring.The threaded engagement that the inner side on inner core 2 top is provided with outside screw thread and end cap 1 fixes end cap 1.
Pedestal 6 is welded on heat power plant boiler powder feeding pipes.The inner chamber of pedestal 6 is communicated with powder feeding pipes.
The course of work is as follows:
Sampling sealing socket is assembled, is then welded on the correct position of powder feeding pipes.When not sampling as shown in Figure 4, the annular housing of sealing is formed between inner core 2 and pedestal 6.First disconnect draft tube and source of the gas during use, open compressed air inlet ball valve 5, loosen inner core 2 gradually with spanner, emerge from ball valve 5 containing powder gas until have, gland 3 is screwed.
Pressurized air is accessed on the compressed air inlet ball valve 5 outside pedestal 6, compressed air pressure is 0.3 ~ 0.5MPa about, pressurized air enters the gap between inner core 2 outer wall and pedestal 6 inwall, finally from the annular gap that pedestal 6 conical surface and inner core 2 conical surface are formed ejection at a high speed, spouting velocity is between 40 ~ 50m/s, and the pressurized air of ejection at a high speed prevents pulverized coal borne air flow to spray outside pipe.Now back out end cap 1, pulverized coal borne air flow can not spray, and then elbow type coal dust sampling gun or pitot tube is stretched in the inner chamber of inner core 2, just can carry out coal dust sampling or primary air speed measuring.
Enter the pressurized air of pedestal 6 cavity likely from the clearance leakage between inner core 2 upper external thread and pedestal 6 upper internal threaded, can reduce from the air supply of sealing socket lower annular gap ejection, spouting velocity declines, cause sealing effectiveness bad, pulverized coal borne air flow outwards sprays, affect test operation, also contaminated environment.Therefore installed an O-ring seal 4 additional on above-mentioned connection of thread top, compressed with gland 3 simultaneously, can effectively avoid pressurized air to leak, prevent pulverized coal borne air flow from spraying.After measurement terminates, elbow type coal dust sampling gun or pitot tube are taken out, the end cap 1 tightening then screwed on.Tighten inner core 2 gradually with spanner, make coal dust pedestal 6 be zero with the annular gap of inner core 2 bottom, form seal chamber between inside pedestal 6 and outside inner core 2, then close ball valve 5, cut off pressurized air, whole off-test.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.

Claims (9)

1. one kind uses compressed-air actuated coal dust sampling sealing socket, it is characterized in that, comprise pedestal, described pedestal hollow, internal sleeve has an inner core, and described inner core is also hollow, and inner core top is flexibly connected with pedestal, a seal chamber is formed between outside inner core and inside pedestal, after inner core moves, the inner chamber of inner core and pedestal inner space; Described pedestal top is provided with gland and seals pedestal and inner core, and the top of described inner core is provided with the upper opening that end cap seals inner core; The outer wall of described pedestal is provided with draft tube.
2. a kind of use as claimed in claim 1 compressed-air actuated coal dust sampling sealing socket, is characterized in that, be provided with O-ring seal by the gap sealing between pedestal and inner core between described gland and pedestal.
3. a kind of use as claimed in claim 1 compressed-air actuated coal dust sampling sealing socket, it is characterized in that, described draft tube is provided with ball valve.
4. as claimed in claim 1 a kind of use compressed-air actuated coal dust sampling sealing socket, it is characterized in that, described pedestal inner chamber is divided into three sections, is followed successively by first paragraph, second segment and the 3rd section from top to bottom, the internal diameter that the internal diameter of described first paragraph is greater than the 3rd section; Being communicated with the 3rd period with first paragraph respectively up and down of described second segment, the truncated conical shape becoming to stand upside down; Described inner core is positioned at pedestal first paragraph, and the bottom face of inner core is the conical surface; The medial surface fitted seal of the bottom face of described inner core and the described second segment of pedestal, after inner chamber moves, forms passage between the medial surface of the bottom face of inner core and the described second segment of pedestal.
5. as claimed in claim 1 a kind of use compressed-air actuated coal dust sampling sealing socket, it is characterized in that, the threaded engagement that the inner side on described pedestal top is provided with screw thread and inner core upper outside fixes inner core.
6. a kind of use as claimed in claim 1 compressed-air actuated coal dust sampling sealing socket, it is characterized in that, the outside on described pedestal top is provided with the threaded engagement stationary gland of screw thread and gland inner ring.
7. a kind of use as claimed in claim 1 compressed-air actuated coal dust sampling sealing socket, it is characterized in that, the threaded engagement that the inner side on described inner core top is provided with outside screw thread and end cap fixes end cap.
8. a kind of use as claimed in claim 1 compressed-air actuated coal dust sampling sealing socket, it is characterized in that, described pedestal is welded on heat power plant boiler powder feeding pipes.
9. a kind of use as claimed in claim 8 compressed-air actuated coal dust sampling sealing socket, it is characterized in that, the inner chamber of described pedestal is communicated with powder feeding pipes.
CN201520270788.8U 2015-04-29 2015-04-29 A kind of use compressed-air actuated coal dust sampling sealing socket Active CN204556318U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520270788.8U CN204556318U (en) 2015-04-29 2015-04-29 A kind of use compressed-air actuated coal dust sampling sealing socket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520270788.8U CN204556318U (en) 2015-04-29 2015-04-29 A kind of use compressed-air actuated coal dust sampling sealing socket

Publications (1)

Publication Number Publication Date
CN204556318U true CN204556318U (en) 2015-08-12

Family

ID=53831413

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520270788.8U Active CN204556318U (en) 2015-04-29 2015-04-29 A kind of use compressed-air actuated coal dust sampling sealing socket

Country Status (1)

Country Link
CN (1) CN204556318U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107401645A (en) * 2017-04-10 2017-11-28 上海电力建设启动调整试验所 Sealing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107401645A (en) * 2017-04-10 2017-11-28 上海电力建设启动调整试验所 Sealing device

Similar Documents

Publication Publication Date Title
CN205079965U (en) Buggy sample seal receptacle and have sampling device and measuring device of this seal receptacle
CN204556318U (en) A kind of use compressed-air actuated coal dust sampling sealing socket
CN204556195U (en) A kind of pipeline girth weld air-flow the cannot-harm-detection device
CN202349428U (en) Pipeline connector
CN107314858A (en) A kind of floating type pipeline pressure release testing agency
CN207213499U (en) A kind of self-fastening sealing structure that can open soon of pipe cleaning valve
CN204922281U (en) Gas seal for pipe joints structure
CN204493734U (en) Fluid filling valve
CN208519248U (en) A kind of valve heat tracing dismountable flange set group device
CN210153265U (en) Pneumatic two-piece type high-platform ball valve
CN203335944U (en) Modular differential pressure bottle valve
CN208565890U (en) A kind of side flanges sealing clamp
CN204964128U (en) Cylinder head fuel inlet port leak test subassembly
CN202884361U (en) Pipeline plugging device
CN202020977U (en) Pulse valve blowing pipe
CN204142298U (en) A kind of inner chamber protector of Venturi tube
CN207318005U (en) A kind of floating type pipeline pressure release testing agency
CN106153270A (en) A kind of pipeline girth weld lossless detection method
CN206656052U (en) The sealing device connected for pipeline inside and outside vacuum cavity
CN204941953U (en) A kind of gas leakage preventing system of gas fan
CN219956727U (en) A thermometer protective case for urea synthesis high voltage system
CN205470862U (en) Industrial boiler collection case hand hole device
CN204254145U (en) Gas steel pipeline band gas plugging device
CN209671804U (en) A kind of gasket of threaded fitting
CN220452988U (en) Steel pipe with leak-proof structure

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant