CN209820708U - Helium mass spectrometer leak detection system for dividing wall type heat exchanger - Google Patents

Abstract

The utility model discloses a helium mass spectrum leak hunting system for dividing wall type heat exchanger, including filling the helium subassembly, spouting helium subassembly, malleation helium mass spectrum leak hunting subassembly and negative pressure helium mass spectrum leak hunting subassembly, fill the outer union coupling of helium subassembly and dividing wall type heat exchanger, the inlayer pipe that spouts the helium subassembly and locate dividing wall type heat exchanger exposes the outside of outer pipe, the leak hunting end of malleation helium mass spectrum leak hunting subassembly is located the outside of outer pipe, the leak hunting end of negative pressure helium mass spectrum leak hunting subassembly is located the inside of inlayer pipe. The utility model discloses have positive, negative pressure leak hunting performance simultaneously, realized that the comprehensiveness to each sealed point of heat exchanger, continuity detect.

Description

Helium mass spectrometer leak detection system for dividing wall type heat exchanger

Technical Field

The utility model relates to a sealed detection, in particular to helium mass spectrum leak hunting system for dividing wall type heat exchanger.

Background

The heat exchanger is an energy-saving device for transferring heat between materials between two or more fluids with different temperatures, and is used for transferring heat from the fluid with higher temperature to the fluid with lower temperature to make the temperature of the fluid reach the index specified by the process so as to meet the requirements of process conditions, and is also one of main devices for improving the utilization rate of energy. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, and is widely applied. Among the heat exchangers, the dividing wall type heat exchanger is the most widely used at present, and the dividing wall type heat exchanger is characterized in that two fluids with different temperatures flow in a space separated by a wall surface, and heat transfer through the wall surface and convection of the fluids on the wall surface are carried out to exchange heat between the two fluids.

In the production and over-inspection process of the dividing wall type heat exchanger, in order to ensure the sealing performance of the flowing space of two fluids, the internal and external leakage conditions of the dividing wall type heat exchanger need to be detected, the traditional water detection is time-consuming, labor-consuming and difficult to operate, and in addition, because the inner layer pipe also has an exposed part, the exposed part of the inner layer pipe cannot be detected by adopting the water detection, so that the detection precision is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies in the prior art, the utility model aims to provide a helium mass spectrum leak hunting system for dividing wall type heat exchanger, this helium mass spectrum leak hunting system have just, negative pressure leak hunting performance simultaneously, have realized the comprehensive, the continuity detection to each sealed point of heat exchanger.

The utility model provides a technical scheme that its technical problem adopted does: the utility model provides a helium mass spectrum leak hunting system for dividing wall type heat exchanger, includes helium filling subassembly, spouts helium subassembly, malleation helium mass spectrum leak hunting subassembly and negative pressure helium mass spectrum leak hunting subassembly, helium filling subassembly and dividing wall type heat exchanger's outer union coupling, it exposes to spout helium subassembly locates dividing wall type heat exchanger's inlayer pipe the outside of outer pipe, the leak hunting end of malleation helium mass spectrum leak hunting subassembly is located the outside of outer pipe, the leak hunting end of negative pressure helium mass spectrum leak hunting subassembly is located the inside of inlayer pipe.

Optionally, the helium filling assembly comprises a high-pressure helium source and an inflation tube, one end of the inflation tube is connected with the high-pressure helium source, and the other end of the inflation tube is connected with a gap between the outer tube and the inner tube.

Optionally, an inflation valve and a pressure gauge are mounted on the inflation tube.

Optionally, the helium spraying assembly comprises an air bag filled with helium gas and a spray gun, and the spray gun is connected with the air bag through a first air pipe.

Optionally, positive pressure helium mass spectrometer leak detection subassembly includes first helium mass spectrometer leak detector and suction gun, the suction gun with first helium mass spectrometer leak detector passes through the second trachea and connects, the operating condition of first helium mass spectrometer leak detector is positive pressure leak detection state.

Optionally, the negative pressure helium mass spectrometer leak detection assembly comprises a second helium mass spectrometer leak detector and a vacuum tube, one end of the vacuum tube is connected with the second helium mass spectrometer leak detector, the other end of the vacuum tube is connected to the top of the part, penetrating out of the outer tube, of the inner tube in a sealing manner, and the second helium mass spectrometer leak detector is in a negative pressure leak detection state.

Adopt above-mentioned technical scheme, the utility model discloses when hunting leak to the dividing wall type heat exchanger, accessible malleation helium mass spectrum leak hunting subassembly detects outer pipe, examine time measuring to inner pipe, owing to filled the helium to the clearance between outer pipe and the inner pipe when detecting outer pipe, therefore when negative pressure helium mass spectrum leak hunting subassembly at the during operation, can directly detect the intraductal part that is located outer pipe to inner pipe, and the inner pipe exposes the part of outer pipe, the accessible fills helium subassembly and spouts the helium to the inner pipe exposed part, rethread negative pressure helium mass spectrum leak hunting subassembly detects. Therefore, the utility model discloses realizing comprehensive detection to outer pipe, the inlayer pipe of dividing wall type heat exchanger that can be comprehensive to the dividing wall type, improved and detected the precision, reduced the detection degree of difficulty simultaneously, practiced thrift check-out time, improved detection efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, the present invention discloses a helium mass spectrometer leak detection system for a dividing wall type heat exchanger, the dividing wall type heat exchanger generally comprises an outer pipe 5 and an inner pipe 6, one part of the inner pipe 6 is located inside the outer pipe 5, the other part is exposed out of the outer pipe 5, and the inner pipe 6 is sealed with the outer pipe 5 at the flush part of the top of the outer pipe 5. The utility model discloses a helium mass spectrum leak hunting system for dividing wall type heat exchanger is including filling helium subassembly 1, spout helium subassembly 2, malleation helium mass spectrum leak hunting subassembly 3 and negative pressure helium mass spectrum leak hunting subassembly 4, fill helium subassembly 1 and dividing wall type heat exchanger's outer pipe 5 and be connected, spout the inlayer pipe 6 that helium subassembly 2 located dividing wall type heat exchanger and expose the outside of outer pipe 5, the leak hunting end of malleation helium mass spectrum leak hunting subassembly 3 locates the outside of outer pipe 5, the inside of inlayer pipe 6 is located to the leak hunting end of negative pressure helium mass spectrum leak hunting subassembly 4. Through the scheme, when the dividing wall type heat exchanger is subjected to leak detection, the outer pipe 5 can be detected through the positive pressure helium mass spectrum leak detection assembly 3, when the inner pipe 6 is detected, helium is filled in a gap between the outer pipe 5 and the inner pipe 6 when the outer pipe 5 is detected, so that when the negative pressure helium mass spectrum leak detection assembly 4 works, the part, located inside the outer pipe 5, of the inner pipe 6 can be directly detected, the inner pipe 6 exposes the part of the outer pipe 5, helium can be sprayed on the exposed part of the inner pipe 6 through the helium charging assembly 1, and then the detection is performed through the negative pressure helium mass spectrum leak detection assembly 4. Therefore, the utility model discloses realizing comprehensive detection to outer pipe 5, the inlayer pipe 6 of dividing wall type heat exchanger that can be comprehensive to the dividing wall type, having improved the detection precision, reduced the detection degree of difficulty simultaneously, practiced thrift check-out time, improved detection efficiency.

Specifically, in this embodiment, as shown in fig. 1, the helium filling assembly 1 includes a high-pressure helium source 101 and a gas filling pipe 102, one end of the gas filling pipe 102 is connected to the high-pressure helium source 101, the other end is connected to the gap between the outer pipe 5 and the inner pipe 6, and the gas filling pipe 102 is provided with a gas filling valve 103 and a pressure gauge 104.

As shown in fig. 1, the helium spray assembly 2 comprises an air bag 201 filled with helium gas and a spray gun 202, wherein the spray gun 202 is connected with the air bag 201 through a first air pipe 203.

As shown in fig. 1, the positive pressure helium mass spectrometer leak detector assembly 3 includes a first helium mass spectrometer leak detector 301 and a suction gun 302, the suction gun 302 is connected to the first helium mass spectrometer leak detector 301 through a second gas pipe 303, and the first helium mass spectrometer leak detector 301 is in a positive pressure leak detection state.

As shown in fig. 1, the negative-pressure helium mass spectrometer leak detector assembly 4 comprises a second helium mass spectrometer leak detector 401 and a vacuum tube 402, one end of the vacuum tube 402 is connected with the second helium mass spectrometer leak detector 401, the other end of the vacuum tube is hermetically connected to the top of the part of the inner tube 6 penetrating through the outer tube 5, and the second helium mass spectrometer leak detector 401 is in a negative-pressure leak detection state.

In this embodiment, the first helium mass spectrometer leak detector 301 and the second helium mass spectrometer leak detector 401 may be SFJ-231 type helium mass spectrometer leak detectors manufactured by anhui instruments technologies, ltd.

When the dividing wall type heat exchanger is detected by the technical scheme of this embodiment, the first helium mass spectrometer leak detector 301 and the second helium mass spectrometer leak detector 401 are started, the apparatus is started to a standby state, the leak detection mode of the second helium mass spectrometer leak detector 401 is set to a vacuum mode, the leak detection mode of the first helium mass spectrometer leak detector 301 is set to a gun suction mode, the inflation valve 103 is opened, positive-pressure helium gas is filled into the outer tube 5, and when the indicated value of the pressure gauge 104 reaches a required pressure value (the pressure value is determined according to actual requirements, for example, in this embodiment, the pressure value can be set to 0.36MPa), the inflation valve 103 is closed. And then pressing a start key of the second helium mass spectrometer leak detector 401 to detect the inner leakage condition of the dividing wall type heat exchanger, namely detecting the leakage of the part of the inner layer pipe 6 positioned in the outer layer pipe 5, and judging whether the dividing wall type heat exchanger has the inner leakage according to the leakage value displayed by the second helium mass spectrometer leak detector 401 when the leakage rate of the second helium mass spectrometer leak detector 401 is stable. And when the inner leakage detection of the dividing wall type heat exchanger is finished, pressing a start key of the first helium mass spectrometer leak detector 301, using a suction gun 302 to sniff suspicious leakage points on the outer side of the outer layer pipe 5, and judging whether the outer layer pipe 5 leaks or not according to the change condition of the leakage rate displayed by the first helium mass spectrometer leak detector 301. When the outer leakage detection of the outer pipe 5 is completed, the second helium mass spectrometer leak detector 401 presses a zero setting key, then the spray gun 202 is used for spraying helium to the outer part of the exposed inner pipe 6, the outer leakage condition of the inner pipe 6 is detected, and whether the outer leakage exists in the outer part of the exposed inner pipe 6 or not is judged according to the leakage rate change condition displayed by the second helium mass spectrometer leak detector 401. After the detection of the dividing wall type heat exchanger is completed, the stop keys of the first helium mass spectrometer leak detector 301 and the second helium mass spectrometer leak detector 401 are pressed.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Besides the technical features described in the specification, other technical features are known to those skilled in the art, and further description of the other technical features is omitted here in order to highlight the innovative features of the present invention.

Claims (6)

1. The utility model provides a helium mass spectrum leak hunting system for dividing wall type heat exchanger which characterized in that, includes helium filling subassembly (1), spouts helium subassembly (2), malleation helium mass spectrum leak hunting subassembly (3) and negative pressure helium mass spectrum leak hunting subassembly (4), helium filling subassembly (1) is connected with outer pipe (5) of dividing wall type heat exchanger, spout inner pipe (6) that helium filling subassembly (2) were located the dividing wall type heat exchanger and expose the outside of outer pipe (5), the leak hunting end of malleation helium mass spectrum leak hunting subassembly (3) is located the outside of outer pipe (5), the leak hunting end of negative pressure helium mass spectrum leak hunting subassembly (4) is located the inside of inner pipe (6).

2. The helium mass spectrometer leak detection system for a dividing wall heat exchanger as claimed in claim 1, wherein the helium filling assembly (1) comprises a high pressure helium source (101) and a gas filling pipe (102), one end of the gas filling pipe (102) is connected with the high pressure helium source (101), and the other end is connected with the gap between the outer pipe (5) and the inner pipe (6).

3. The helium mass spectrometer leak detection system for a dividing wall heat exchanger as claimed in claim 2, wherein a gas filling valve (103) and a pressure gauge (104) are mounted on the gas filling tube (102).

4. The helium mass spectrometer leak detection system for a dividing wall heat exchanger as claimed in claim 1, wherein the helium spray assembly (2) comprises an air bag (201) filled with helium gas and a spray gun (202), and the spray gun (202) is connected with the air bag (201) through a first air pipe (203).

5. The helium mass spectrometer leak detection system for a dividing wall heat exchanger as claimed in claim 1, wherein said positive pressure helium mass spectrometer leak detection assembly (3) comprises a first helium mass spectrometer leak detector (301) and a suction gun (302), said suction gun (302) is connected to said first helium mass spectrometer leak detector (301) through a second gas pipe (303), and the operation state of said first helium mass spectrometer leak detector (301) is a positive pressure leak detection state.

6. The helium mass spectrometer leak detection system for a dividing wall heat exchanger as claimed in claim 1, wherein the negative pressure helium mass spectrometer leak detection assembly (4) comprises a second helium mass spectrometer leak detector (401) and a vacuum tube (402), one end of the vacuum tube (402) is connected with the second helium mass spectrometer leak detector (401), the other end of the vacuum tube is hermetically connected with the top of the part of the inner tube (6) penetrating out of the outer tube (5), and the operating state of the second helium mass spectrometer leak detector (401) is a negative pressure leak detection state.