CN111272361A - Single tube pressure test and leakage detection tool for tube type heat exchanger - Google Patents
Single tube pressure test and leakage detection tool for tube type heat exchanger Download PDFInfo
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- CN111272361A CN111272361A CN201911279646.7A CN201911279646A CN111272361A CN 111272361 A CN111272361 A CN 111272361A CN 201911279646 A CN201911279646 A CN 201911279646A CN 111272361 A CN111272361 A CN 111272361A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3227—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators for radiators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2846—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for tubes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3209—Details, e.g. container closure devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3281—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell
- G01M3/329—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell for verifying the internal pressure of closed containers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a pressure test and leakage detection tool for a single tube of a tube type heat exchanger, and relates to the field of tools used in equipment maintenance and detection. The tool is used in cooperation with two ends of a single tube array, the front end of the tool is a plug with a certain taper, a water flow channel is reserved on the plug, water with certain pressure is injected into the tube array under the control of a valve, a pressure gauge is arranged in the middle section of the tool, and whether the tube array can keep the water pressure or not is judged according to the reading of the pressure gauge so as to determine whether the tube array has leakage or not. The rear end of the tool is a striking and pulling hammer, and the plug at the front end of the tool can be fixed and taken down on the tube nest through the hammer. The water filling end of the tool is provided with a three-way valve which can be switched between a pressure stabilizing water source and a manual pressure pump and is suitable for different testing pressures. Through the tool, the leakage tube nest of the heat exchanger can be confirmed in time, and then leakage points are eliminated through the forms of blocking or replacing the tube nest by the plugs and the like, so that the safe and stable operation of heat exchanger equipment is ensured.
Description
Technical Field
The invention relates to the field of tools used in equipment maintenance and inspection.
Background
In fields such as chemical industry, energy, the heat exchanger is common equipment, because corruption or steel pipe defect itself, the situation that the tubulation leaked appears in the use unavoidably, and prior art will judge concrete which tubulation leaks, must demolish the head at heat exchanger both ends. After the end socket is removed, for many types of heat exchangers, flanges and bolts are not fixed between the tube bundle and the shell, the sealing is not loosened, the tube bundle is in a floating state, the shell side is not allowed to be pressurized, the end socket of the heat exchanger is replaced by machining and manufacturing to fix the tube bundle and the shell, meanwhile, the quantity of materials needed by the flange of the tool, which is opened at a port and can observe the leakage condition of the tube array, is large, the machining period is long, the repeated utilization rate is low, and the tool can not be obtained frequently under the emergency repair condition.
Therefore, it is necessary to develop a tool for testing pressure and leakage of the tube array to solve the above problems.
Disclosure of Invention
The invention aims to provide a tool for rapidly and efficiently testing and detecting leakage of single tubes one by one under the condition that the tubes are not fixed in a floating state.
The technical scheme adopted for achieving the purpose of the invention is that the single tube pressure test and leakage detection tool of the tube type heat exchanger comprises a component I and a component II which are respectively arranged at two ends of a tube.
Part I includes end cap I, middle section coupling mechanism I and installation mechanism, and middle section coupling mechanism I is the cylinder structure, and front end and rear end are marked as respectively at the both ends of middle section coupling mechanism I. The front end of the middle section connecting mechanism I is provided with a connecting hole I which is connected with the plug I in a matched mode, and the rear end of the middle section connecting mechanism I is provided with a connecting hole II which is connected with the installing mechanism in a matched mode.
Middle section coupling mechanism I is provided with rivers passageway I along its axial, and rivers passageway I is close to one end and the I intercommunication of connecting hole I, and the other end seals.
Be provided with manometer connecting hole and water injection pipe connecting hole on the middle section coupling mechanism I, the manometer connecting hole communicates rivers passageway I with the external world, and the water injection pipe connecting hole communicates rivers passageway I with the external world.
The detection head of the pressure gauge P penetrates through the pressure gauge connecting hole and then is tightly connected with the water flow channel I, the water injection hose penetrates through the water injection pipe connecting hole and then is tightly connected with the water flow channel I, and the water injection hose is connected with a pressure stabilizing water source or a manual pressure pump.
One end of the plug I is inserted into the connecting hole I and then is connected with the middle section connecting mechanism I in a sealing mode, a water flow channel II penetrating through two ends of the plug I is arranged on the plug I, and the water flow channel II is in butt joint with the water flow channel I. One end, far away from the middle section connecting mechanism I, of the plug I is of a frustum structure.
The mounting mechanism comprises a guide rod and a knocking hammer, a through hole is formed in the knocking hammer, the knocking hammer slides on the guide rod through the through hole, knocking stop point steps are arranged at two ends of the guide rod, and the stop point steps at one end of the guide rod are inserted into the connecting holes II and then are connected with the middle section connecting mechanism I.
And the component II comprises a plug II, a middle section connecting mechanism II and an installation mechanism. The middle section connecting mechanism II is of a cylinder structure, and the two ends of the middle section connecting mechanism II are respectively marked as the front end and the rear end. And the front end of the middle section connecting mechanism II is provided with a connecting hole III which is connected with the plug II in a matched manner, and the rear end of the middle section connecting mechanism II is provided with a connecting hole IV which is connected with the mounting mechanism in a matched manner.
One end of the plug II is inserted into the connecting hole III and then connected with the middle section connecting mechanism II, and the other end of the plug II is of a frustum structure.
And the stopping point step at one end of the guide rod is inserted into the connecting hole IV and then is connected with the middle section connecting mechanism II.
When the device is used, the frustum structure of the plug I is inserted into one end of a measured tube array, the knocking hammer is knocked towards the direction of the measured tube array, the knocking hammer slides on the guide rod and impacts a stopping point step, and the stopping point step is connected with the middle section connecting mechanism I, so that the plug I is tightly fixed at one end of the measured tube array.
And inserting the frustum structure of the plug II into the other end of the measured tube array, knocking the knocking hammer towards the direction of the measured tube array, wherein the knocking hammer slides on the guide rod and impacts a stopping point step, and the stopping point step is connected with the middle section connecting mechanism II, so that the plug II is tightly fixed at the other end of the measured tube array.
And adding water flow with fixed pressure into the water flow channel I, the water flow channel II and the measured tube through the pressure stabilizing water source or the manual pressurizing pump, and determining the leakage condition of the measured tube according to the reading of the pressure gauge P.
And after the detection is finished, knocking the two knocking hammers towards the direction far away from the tested tube array, wherein the two knocking hammers impact the corresponding stop point steps, and detaching the plug I and the plug II on the tested tube array.
Furthermore, the plug I and the plug II are both made of brass or bronze, and external threads are arranged on the plug I and the plug II.
Furthermore, connecting hole I and connecting hole II of middle section coupling mechanism I all are provided with the internal thread, and connecting hole III and connecting hole IV of middle section coupling mechanism II all are provided with the internal thread, and the stop point step on a guide arm is provided with the external screw thread, and the stop point step on another guide arm is provided with the external screw thread.
End cap I passes through threaded connection with middle section coupling mechanism I, and the stopping point step passes through threaded connection with middle section coupling mechanism I. And the plug II is connected with the middle section connecting mechanism II through threads, and the stopping point step is connected with the middle section connecting mechanism II through threads.
Furthermore, the end that end cap I is connected with middle section coupling mechanism I is provided with the ring channel that supplies the installation of o shape sealing washer, and end cap I realizes sealing connection through the o shape sealing washer of installing in the ring channel with middle section coupling mechanism I.
Furthermore, in the component I, a back nut is screwed into the plug I, and the back nut is tightly propped against the middle section connecting mechanism I. And a back nut is screwed into the guide rod and tightly propped against the middle section connecting mechanism I.
In the component II, a back nut is screwed into the plug II, and the back nut is tightly propped against the middle section connecting mechanism II. And a back nut is screwed into the guide rod and tightly propped against the middle section connecting mechanism II.
Furthermore, the water injection hose is respectively connected with a pressure-stabilizing water source and a manual pressure pump through a three-way switching valve.
Furthermore, the taper of the frustum structures of the plug I and the plug II is 1: 16.
The invention has the beneficial effects that:
1. the tool has simple structure, convenient operation and practical value;
2. the tool can be used for multiple times, and the reusability is good;
3. the tool is suitable for heat exchange tubes with a plurality of tube diameters, and has a wide application range;
4. the knocking hammer is convenient to mount and dismount and high in working efficiency.
Drawings
FIG. 1 is a schematic view of part I;
FIG. 2 is a schematic view of part II;
FIG. 3 is a schematic view of a middle section connecting mechanism I;
FIG. 4 is a schematic view of a plug I;
FIG. 5 is a schematic view of plug II;
FIG. 6 is a schematic view of a mounting mechanism;
FIG. 7 is a schematic view of a pin puller.
In the figure: the water injection device comprises a plug I1, a water flow channel II 101, an o-shaped sealing ring 102, a middle section connecting mechanism I2, a water flow channel I201, a pressure gauge connecting hole 202, a water injection pipe connecting hole 203, a plug II 3, an installation mechanism 4, a guide rod 401, a knocking hammer 402, a knocking stop point step 403, a water injection hose 5, a back fastening nut 6, a three-way switching valve 8 and a middle section connecting mechanism II 9.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the embodiment discloses single tubulation pressure testing tool of tubulation heat exchanger, single tubulation pressure testing tool of tubulation heat exchanger is including installing part I and part II at tubulation both ends respectively.
Referring to fig. 1, the component i includes a plug i 1, a middle section connecting mechanism i 2 and an installation mechanism 4, the middle section connecting mechanism i 2 is a cylinder structure, and two ends of the middle section connecting mechanism i 2 are respectively marked as a front end and a rear end. The front end of the middle section connecting mechanism I2 is provided with a connecting hole I which is connected with the plug I1 in a matched mode, and the rear end of the middle section connecting mechanism is provided with a connecting hole II which is connected with the installing mechanism 4 in a matched mode. Connecting hole I and connecting hole II of middle section coupling mechanism I2 all are provided with the internal thread.
Referring to fig. 3, the middle section connecting mechanism i 2 is provided with a water flow channel i 201 along the axial direction thereof, one end of the water flow channel i 201 close to the connecting hole i is communicated with the connecting hole i, and the other end is closed.
Be provided with manometer connecting hole 202 and water injection pipe connecting hole 203 on middle section coupling mechanism I2, manometer connecting hole 202 communicates rivers passageway I201 with the external world, and water injection pipe connecting hole 203 communicates rivers passageway I201 with the external world.
A detection head of the pressure gauge P penetrates through the pressure gauge connecting hole 202 and then is tightly connected with the water flow channel I201; referring to fig. 1, the water injection hose 5 passes through the water injection pipe connection hole 203 and then is tightly connected to the water flow channel i 201, and the water injection hose 5 is respectively connected to a pressure-stabilized water source and a manual pressurizing pump through the three-way switching valve 8.
Referring to a drawing a in FIG. 4, which is a sectional view of the plug I1, and a drawing b is a left drawing of the drawing a, the plug I1 is made of brass or bronze, and an external thread is arranged on the plug I1.
One end of the plug I1 is inserted into the connecting hole I and then is in threaded connection with the middle section connecting mechanism I2. Referring to fig. 1 or 4, an annular groove for installing an o-shaped sealing ring 102 is formed in one end, connected with the middle section connecting mechanism i 2, of the plug i 1, and the plug i 1 and the middle section connecting mechanism i 2 are in sealing connection through the o-shaped sealing ring 102 installed in the annular groove.
A water flow channel II 101 penetrating through two ends of the plug I1 is arranged on the plug I1, and the water flow channel II 101 is in butt joint with the water flow channel I201. Referring to fig. 1, one end of the plug i 1, which is far away from the middle section connecting mechanism i 2, is of a frustum structure, and the taper of the frustum structure is 1: 16.
Referring to fig. 6, the mounting mechanism 4 includes a guide rod 401 and a knocking hammer 402, the knocking hammer 402 is provided with a through hole, the knocking hammer 402 slides on the guide rod 401 through the through hole, both ends of the guide rod 401 are provided with knocking stop point steps 403, one stop point step 403 on the guide rod 401 is provided with an external thread, and the stop point step 403 is inserted into the connecting hole ii and then is in threaded connection with the middle section connecting mechanism i 2.
Referring to fig. 1, in the component i, two back-up nuts 6 are screwed into a plug i 1, and the two back-up nuts 6 are tightly pressed against a middle section connecting mechanism i 2. Two back-tightening nuts 6 are screwed into the guide rod 401, and the two back-tightening nuts 6 are tightly propped against the middle section connecting mechanism I2.
Referring to fig. 2, the component ii includes a plug ii 3, a middle section connecting mechanism ii 9 and a mounting mechanism 4. The middle section connecting mechanism II 9 is of a cylinder structure, and the two ends of the middle section connecting mechanism II 9 are respectively marked as the front end and the rear end. The front end of the middle section connecting mechanism II 9 is provided with a connecting hole III which is connected with the plug II 3 in a matched mode, and the rear end of the middle section connecting mechanism II 9 is provided with a connecting hole IV which is connected with the mounting mechanism 4 in a matched mode. And the connecting hole III and the connecting hole IV of the middle section connecting mechanism II 9 are both provided with internal threads.
Referring to a diagram c in FIG. 5, which is a sectional view of the plug II 3, a diagram d is a left view of the diagram c, the plug II 3 is made of brass or bronze, and an external thread is arranged on the plug II 3. One end of the plug II 3 is inserted into the connecting hole III and then is in threaded connection with the middle section connecting mechanism II 9, the other end of the plug II is of a frustum structure, and the taper of the frustum structure is 1: 16.
And the stopping point step 403 at one end of the guide rod 401 is inserted into the connecting hole IV and then is in threaded connection with the middle section connecting mechanism II 9.
Referring to fig. 2, in the component ii, two back-up nuts 6 are screwed into the plug ii 3, and the two back-up nuts 6 are tightly abutted to the middle section connecting mechanism ii 9. Two back-tightening nuts 6 are screwed into the guide rod 401, and the two back-tightening nuts 6 are tightly propped against the middle section connecting mechanism II 9.
During the use, will two earlier the back nut 6 is revolved on end cap I1, carries out threaded connection with end cap I1 and middle section coupling mechanism I2 again. Screwing the two back-tightening nuts 6 on the stop point step 403, and connecting the mounting mechanism 4 and the middle section connecting mechanism I2 in a threaded manner to complete assembly of the component I. The frustum structure of the plug I1 is inserted into one end of a measured tube array, the knocking hammer 402 is knocked towards the direction of the measured tube array, the knocking hammer 402 slides on the guide rod 401 and impacts the stopping point step 403, and the stopping point step 403 is connected with the middle section connecting mechanism I2, so that the plug I1 is tightly fixed at one end of the measured tube array.
Screwing the two back-tightening nuts 6 on the plug II 3, and then connecting the plug II 3 with the middle section connecting mechanism II 9 in a threaded manner. Screwing the two back-tightening nuts 6 on the stopping point steps 403, and connecting the mounting mechanism 4 and the middle section connecting mechanism II 9 in a threaded manner to complete assembly of the component II.
And inserting the frustum structure of the plug II 3 into the other end of the measured tube array, knocking the knocking hammer 402 towards the direction of the measured tube array, wherein the knocking hammer 402 slides on the guide rod 401 and impacts the stopping point step 403, and the stopping point step 403 is connected with the middle section connecting mechanism II 9, so that the plug II 3 is tightly fixed at the other end of the measured tube array.
And adding water flow with fixed pressure into the water flow channel I201, the water flow channel II 101 and the measured pipe by the pressure stabilizing water source or the manual pressurizing pump, and determining the leakage condition of the measured pipe according to the reading of the pressure gauge P.
After the detection is finished, the two knocking hammers 402 are knocked towards the direction far away from the tested tube array, the two knocking hammers 402 strike the corresponding stopping point steps 403, and the plug I1 and the plug II 3 on the tested tube array are detached.
Referring to fig. 7, the plug i 1 on the component i is detached, and the threaded column is screwed into the connecting hole i of the middle section connecting mechanism i 2 to form a pin puller, or the plug ii 3 on the component ii is detached, and the threaded column is screwed into the connecting hole iii of the middle section connecting mechanism ii 9 to form a pin puller. The pin puller is used for various occasions needing pulling and removing parts in a factory overhaul field, such as removing labyrinth seals, removing oil seals and the like in compressor overhaul. When the pin puller is used, the threaded column is connected with a component to be removed, and the component to be removed is taken out by knocking outwards by the knocking hammer 402.
Example 2:
the embodiment discloses single tubulation pressure testing tool of tubulation heat exchanger, single tubulation pressure testing tool of tubulation heat exchanger is including installing part I and part II at tubulation both ends respectively.
Referring to fig. 1, the component i includes a plug i 1, a middle section connecting mechanism i 2 and an installation mechanism 4, the middle section connecting mechanism i 2 is a cylinder structure, and two ends of the middle section connecting mechanism i 2 are respectively marked as a front end and a rear end. The front end of the middle section connecting mechanism I2 is provided with a connecting hole I which is connected with the plug I1 in a matched mode, and the rear end of the middle section connecting mechanism is provided with a connecting hole II which is connected with the installing mechanism 4 in a matched mode.
Referring to fig. 3, the middle section connecting mechanism i 2 is provided with a water flow channel i 201 along the axial direction thereof, one end of the water flow channel i 201 close to the connecting hole i is communicated with the connecting hole i, and the other end is closed.
Be provided with manometer connecting hole 202 and water injection pipe connecting hole 203 on middle section coupling mechanism I2, manometer connecting hole 202 communicates rivers passageway I201 with the external world, and water injection pipe connecting hole 203 communicates rivers passageway I201 with the external world.
A detection head of the pressure gauge P penetrates through the pressure gauge connecting hole 202 and then is tightly connected with the water flow channel I201; referring to fig. 1, the water injection hose 5 passes through the water injection pipe connection hole 203 and then is tightly connected with the water flow channel i 201, and the water injection hose 5 is connected with a pressure-stabilizing water source or a manual pressurizing pump.
One end of the plug I1 is inserted into the connecting hole I and then is connected with the middle section connecting mechanism I2 in a sealing mode, a water flow channel II 101 penetrating through two ends of the plug I1 is arranged on the plug I1, and the water flow channel II 101 is in butt joint with the water flow channel I201. Referring to fig. 1, one end of the plug i 1, which is far away from the middle section connecting mechanism i 2, is of a frustum structure.
Referring to fig. 6, the mounting mechanism 4 includes a guide rod 401 and a knocking hammer 402, the knocking hammer 402 is provided with a through hole, the knocking hammer 402 slides on the guide rod 401 through the through hole, both ends of the guide rod 401 are provided with knocking stop point steps 403, and the stop point steps 403 at one end of the guide rod 401 are inserted into the connecting holes ii and then connected with the middle section connecting mechanism i 2.
Referring to fig. 2, the component ii includes a plug ii 3, a middle section connecting mechanism ii 9 and a mounting mechanism 4. The middle section connecting mechanism II 9 is of a cylinder structure, and the two ends of the middle section connecting mechanism II 9 are respectively marked as the front end and the rear end. The front end of the middle section connecting mechanism II 9 is provided with a connecting hole III which is connected with the plug II 3 in a matched mode, and the rear end of the middle section connecting mechanism II 9 is provided with a connecting hole IV which is connected with the mounting mechanism 4 in a matched mode.
One end of the plug II 3 is inserted into the connecting hole III and then is connected with the middle section connecting mechanism II 9, and the other end of the plug II 3 is of a frustum structure.
And a stopping point step 403 at one end of the guide rod 401 is inserted into the connecting hole IV and then is connected with the middle section connecting mechanism II 9.
When the plug I1 is used, the frustum structure of the plug I1 is inserted into one end of a measured tube, the knocking hammer 402 is knocked towards the direction of the measured tube, the knocking hammer 402 slides on the guide rod 401 and impacts the stopping point step 403, and the stopping point step 403 is connected with the middle section connecting mechanism I2, so that the plug I1 is tightly fixed at one end of the measured tube.
And inserting the frustum structure of the plug II 3 into the other end of the measured tube array, knocking the knocking hammer 402 towards the direction of the measured tube array, wherein the knocking hammer 402 slides on the guide rod 401 and impacts the stopping point step 403, and the stopping point step 403 is connected with the middle section connecting mechanism II 9, so that the plug II 3 is tightly fixed at the other end of the measured tube array.
And adding water flow with fixed pressure into the water flow channel I201, the water flow channel II 101 and the measured pipe by the pressure stabilizing water source or the manual pressurizing pump, and determining the leakage condition of the measured pipe according to the reading of the pressure gauge P.
After the detection is finished, the two knocking hammers 402 are knocked towards the direction far away from the tested tube array, the two knocking hammers 402 strike the corresponding stopping point steps 403, and the plug I1 and the plug II 3 on the tested tube array are detached.
Example 3:
the main structure of the plug I1 and the plug II 3 are made of brass or bronze, and the plug I1 and the plug II 3 are provided with external threads.
Example 4:
the main structure of the embodiment is the same as that of embodiment 3, further, connecting hole I and connecting hole II of middle section connecting mechanism I2 are provided with internal threads, connecting hole III and connecting hole IV of middle section connecting mechanism II 9 are provided with internal threads, one end of one guide rod 401 connected with middle section connecting mechanism I2 is provided with external threads, and one end of the other guide rod 401 connected with middle section connecting mechanism II 9 is provided with external threads.
End cap I1 and middle section coupling mechanism I2 pass through threaded connection, and guide arm 401 passes through threaded connection with middle section coupling mechanism I2. The plug II 3 is connected with the middle section connecting mechanism II 9 through threads, and the guide rod 401 is connected with the middle section connecting mechanism II 9 through threads.
Example 5:
the main structure of this embodiment is the same as that of embodiment 4, and further, referring to fig. 1 or 4, an annular groove for installing an o-shaped sealing ring 102 is formed in one end of the plug i 1 connected with the middle section connecting mechanism i 2, and the plug i 1 and the middle section connecting mechanism i 2 are connected in a sealing manner through the o-shaped sealing ring 102 installed in the annular groove.
Example 6:
the main structure of this embodiment is the same as that of embodiment 5, and further, referring to fig. 1, in the component i, two back-up nuts 6 are screwed into the plug i 1 and tightly abut against each other, and the two back-up nuts 6 tightly abut against the middle section connecting mechanism i 2. Two back-tightening nuts 6 are screwed into the guide rod 401 and tightly abut against each other, and the two back-tightening nuts 6 tightly abut against the middle section connecting mechanism I2.
Referring to fig. 2, in the component ii, two back-tightening nuts 6 are screwed into the plug ii 3 and abut against each other, and the two back-tightening nuts 6 abut against the middle section connecting mechanism ii 9. Two back-tightening nuts 6 are screwed into the guide rod 401 and tightly abut against each other, and the two back-tightening nuts 6 tightly abut against the middle section connecting mechanism II 9.
Example 7:
the main structure of this embodiment is the same as that of embodiment 6, and further, referring to fig. 1, the water injection hose 5 is connected with a pressure-stabilizing water source and a manual pressurizing pump through a three-way switching valve 8, and the connection of the pressure-stabilizing water source and the manual pressurizing pump can be freely switched, so that the water injection hose is applied to tests of different water pressures.
Example 8:
the main structure of the present embodiment is the same as that of embodiment 7, and further, the taper of the frustum structures of the plug i 1 and the plug ii 3 is 1: 16.
Claims (7)
1. Single tubulation pressure testing tool of leaking hunting of tubulation heat exchanger, its characterized in that: the device comprises a component I and a component II which are respectively arranged at two ends of a tube array;
the component I comprises a plug I (1), a middle section connecting mechanism I (2) and an installation mechanism (4), the middle section connecting mechanism I (2) is of a cylinder structure, and two ends of the middle section connecting mechanism I (2) are respectively marked as a front end and a rear end; the front end of the middle section connecting mechanism I (2) is provided with a connecting hole I which is in matched connection with the plug I (1), and the rear end of the middle section connecting mechanism I is provided with a connecting hole II which is in matched connection with the mounting mechanism (4);
the middle section connecting mechanism I (2) is provided with a water flow channel I (201) along the axial direction of the middle section connecting mechanism I, one end, close to the connecting hole I, of the water flow channel I (201) is communicated with the connecting hole I, and the other end of the water flow channel I (201) is closed;
the middle section connecting mechanism I (2) is provided with a pressure gauge connecting hole (202) and a water injection pipe connecting hole (203), the pressure gauge connecting hole (202) is used for communicating the water flow channel I (201) with the outside, and the water injection pipe connecting hole (203) is used for communicating the water flow channel I (201) with the outside;
the detection head of the pressure gauge P penetrates through the pressure gauge connecting hole (202) and then is tightly connected with the water flow channel I (201), the water injection hose (5) penetrates through the water injection pipe connecting hole (203) and then is tightly connected with the water flow channel I (201), and the water injection hose (5) is connected with a pressure stabilizing water source or a manual pressure pump;
one end of the plug I (1) is inserted into the connecting hole I and then is in sealing connection with the middle section connecting mechanism I (2), a water flow channel II (101) penetrating through two ends of the plug I (1) is arranged on the plug I (1), and the water flow channel II (101) is in butt joint with the water flow channel I (201); one end, far away from the middle section connecting mechanism I (2), of the plug I (1) is of a frustum structure;
the mounting mechanism (4) comprises a guide rod (401) and a knocking hammer (402), a through hole is formed in the knocking hammer (402), the knocking hammer (402) slides on the guide rod (401) through the through hole, knocking stop point steps (403) are arranged at two ends of the guide rod (401), and the stop point steps (403) at one end of the guide rod (401) are inserted into the connecting hole II and then are connected with the middle section connecting mechanism I (2);
the component II comprises a plug II (3), a middle section connecting mechanism II (9) and an installation mechanism (4); the middle section connecting mechanism II (9) is of a cylinder structure, and two ends of the middle section connecting mechanism II (9) are respectively marked as a front end and a rear end; the front end of the middle section connecting mechanism II (9) is provided with a connecting hole III which is in matched connection with the plug II (3), and the rear end of the middle section connecting mechanism II is provided with a connecting hole IV which is in matched connection with the mounting mechanism (4);
one end of the plug II (3) is inserted into the connecting hole III and then is connected with the middle section connecting mechanism II (9), and the other end of the plug II (3) is of a frustum structure;
the stopping point step (403) at one end of the guide rod (401) is inserted into the connecting hole IV and then is connected with the middle section connecting mechanism II (9);
when the plug I (1) is used, the frustum structure of the plug I (1) is inserted into one end of a measured tube, the knocking hammer (402) is knocked towards the direction of the measured tube, the knocking hammer (402) slides on the guide rod (401) and impacts the step (403) of the stopping point, and the step (403) of the stopping point is connected with the middle section connecting mechanism I (2), so that the plug I (1) is tightly fixed at one end of the measured tube;
inserting the frustum structure of the plug II (3) into the other end of the measured tube array, knocking the knocking hammer (402) towards the direction of the measured tube array, wherein the knocking hammer (402) slides on the guide rod (401) and impacts the stopping point step (403), and the stopping point step (403) is connected with the middle section connecting mechanism II (9), so that the plug II (3) is tightly fixed at the other end of the measured tube array;
adding water flow with fixed pressure into the water flow channel I (201), the water flow channel II (101) and the measured pipe by the pressure stabilizing water source or the manual pressure pump, and determining the leakage condition of the measured pipe according to the reading of the pressure gauge P;
after the detection is finished, the knocking hammers (402) are knocked towards the direction far away from the measured tube, the two knocking hammers (402) impact the corresponding stopping point steps (403), and the plug I (1) and the plug II (3) on the measured tube are detached.
2. The single tube array pressure test and leakage detection tool of the tube array heat exchanger according to claim 1, characterized in that: the plug I (1) and the plug II (3) are both made of brass or bronze, and external threads are arranged on the plug I (1) and the plug II (3).
3. The single tube array pressure test and leakage detection tool of the tube array heat exchanger according to claim 1 or 2, characterized in that: the connecting holes I and II of the middle section connecting mechanism I (2) are provided with internal threads, the connecting holes III and IV of the middle section connecting mechanism II (9) are provided with internal threads, a stop point step (403) on one guide rod (401) is provided with an external thread, and a stop point step (403) on the other guide rod (401) is provided with an external thread;
the plug I (1) is connected with the middle section connecting mechanism I (2) through threads, and the stopping point step (403) is connected with the middle section connecting mechanism I (2) through threads; and the plug II (3) is in threaded connection with the middle section connecting mechanism II (9), and the stopping point step (403) is in threaded connection with the middle section connecting mechanism II (9).
4. The single tube array pressure test and leakage detection tool of the tube array heat exchanger according to claim 1, characterized in that: the one end that end cap I (1) and middle section coupling mechanism I (2) are connected is provided with the ring channel that supplies o shape sealing washer (102) to install, and end cap I (1) and middle section coupling mechanism I (2) realize sealing connection through installing o shape sealing washer (102) in the ring channel.
5. The single tube array pressure test and leakage detection tool of the tube array heat exchanger according to claim 2 or 3, characterized in that: in the component I, a back-tightening nut (6) is screwed into a plug I (1), and the back-tightening nut (6) is tightly propped against a middle section connecting mechanism I (2); a back-tightening nut (6) is screwed into the guide rod (401), and the back-tightening nut (6) is tightly propped against the middle section connecting mechanism I (2);
in the component II, a back-tightening nut (6) is screwed into the plug II (3), and the back-tightening nut (6) is tightly propped against the middle section connecting mechanism II (9); and a back nut (6) is screwed into the guide rod (401), and the back nut (6) is tightly propped against the middle section connecting mechanism II (9).
6. The single tube array pressure test and leakage detection tool of the tube array heat exchanger according to claim 5, characterized in that: the water injection hose (5) is respectively connected with a pressure stabilizing water source and a manual booster pump through a three-way switching valve (8).
7. The single tube array pressure test and leakage detection tool of the tube array heat exchanger according to claim 1, characterized in that: the conicity of the frustum structures of the plug I (1) and the plug II (3) is 1: 16.
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| CN201911279646.7A CN111272361B (en) | 2019-12-13 | 2019-12-13 | Single tube pressure test and leakage detection tool for tube type heat exchanger |
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| CN201911279646.7A CN111272361B (en) | 2019-12-13 | 2019-12-13 | Single tube pressure test and leakage detection tool for tube type heat exchanger |
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| CN111272361B CN111272361B (en) | 2022-02-22 |
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| CN111272361B (en) | 2022-02-22 |
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